FD 100/320 Gbps NT and FX NT IHub MPLS Guidedownload.vianet.com.np/Others/Temp/Nokia/Nokia Guide... · 2018. 11. 28. · Nokia — Proprietary and confidential Use pursuant to applicable

Nokia — Proprietary and confidentialUse pursuant to applicable agreements

7302 Intelligent Services Access Manager7330 Intelligent Services Access Manager Fiber To The Node7360 Intelligent Services Access Manager Flexible MultiplexerRelease 5.4.01

FD 100/320 Gbps NT and FX NT IHub MPLS Guide

3HH-11987-AAAA-TQZZA

Issue: 07

June 2016


2

FD 100/320 Gbps NT and FX NT IHub MPLSGuide

3HH-11987-AAAA-TQZZA Issue: 07

Nokia is a registered trademark of Nokia Corporation. Other products and company names mentioned herein may be trademarks or tradenames of their respective owners.The information presented is subject to change without notice. No responsibility is assumed for inaccuracies contained herein.© 2014-2016 Nokia. Contains proprietary/trade secret information which is the property of Nokia and must not be made available to, or copied or used by anyone outside Nokia without its written authorization. Not to be used or disclosed except in accordance with applicable agreements.


Issue: 07 3HH-11987-AAAA-TQZZA 3

Table of contents1 Preface...........................................................................................191.1 Scope ........................................................................................................191.2 Applicable releases ...................................................................................191.3 Audience....................................................................................................191.4 Required knowledge..................................................................................191.5 Product naming .........................................................................................191.6 Documents ................................................................................................191.7 Acronyms and initialisms ...........................................................................201.8 Safety information......................................................................................201.9 Special information ....................................................................................201.10 Release notes............................................................................................20

2 Getting Started..............................................................................212.1 In This Document ......................................................................................212.2 Services Command Reference..................................................................212.3 CLI Command Syntax Symbols.................................................................21

3 Multiprotocol Label Switching.....................................................233.1 In this Chapter ...........................................................................................233.2 MPLS.........................................................................................................233.2.1 MPLS Label Stack .....................................................................................233.2.1.1 Label Values..............................................................................................253.2.2 Label Switching Routers............................................................................263.2.2.1 LSP Types.................................................................................................263.2.2.2 Detour LSPs ..............................................................................................273.2.3 Advanced MPLS/RSVP Features..............................................................283.2.3.1 LSP Path Change......................................................................................283.3 MPLS Service Usage ................................................................................283.3.1 Service Distribution Paths .........................................................................293.4 Configuration Process Overview ...............................................................293.4.1 Configuration Notes...................................................................................293.5 Configuring MPLS and RSVP with CLI......................................................303.5.1 MPLS Configuration Overview ..................................................................303.5.1.1 LSPs ..........................................................................................................303.5.1.2 Paths .........................................................................................................313.5.1.3 Router Interface.........................................................................................313.5.1.4 Choosing the Signaling Protocol ...............................................................313.5.2 Basic MPLS Configuration.........................................................................313.5.3 Common Configuration Tasks ...................................................................323.5.4 Configuring MPLS Components ................................................................333.5.4.1 Configuring Global MPLS Parameters ......................................................333.5.4.2 Configuring an MPLS Interface .................................................................343.5.4.3 Configuring MPLS Paths ...........................................................................343.5.4.4 Configuring an MPLS LSP.........................................................................353.5.4.5 Configuring a Static LSP ...........................................................................363.5.4.6 Configuring RSVP Parameters..................................................................36

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3.5.4.7 Configuring RSVP Message Pacing Parameters ......................................373.5.5 MPLS Configuration Management Tasks..................................................383.5.5.1 Deleting MPLS...........................................................................................383.5.5.2 Modifying MPLS Parameters.....................................................................383.5.5.3 Modifying an MPLS LSP............................................................................383.5.5.4 Modifying MPLS Path Parameters ............................................................393.5.5.5 Modifying MPLS Static LSP Parameters ...................................................393.5.5.6 Deleting an MPLS Interface.......................................................................403.6 MPLS CLI Command Reference...............................................................403.6.1 MPLS Commands .....................................................................................403.6.2 LSP Commands ........................................................................................413.6.3 MPLS Path Commands .............................................................................413.6.4 Show Commands ......................................................................................423.6.5 Tools Commands ......................................................................................423.6.6 Clear Commands.......................................................................................423.6.7 Debug Commands.....................................................................................423.7 MPLS CLI Configuration Commands ........................................................433.7.1 MPLS Generic Commands........................................................................433.7.1.1 mpls ...........................................................................................................433.7.1.2 admin-group ..............................................................................................443.7.1.3 hold-timer...................................................................................................443.7.1.4 resignal-timer.............................................................................................453.7.1.5 secondary-fast-retry-timer .........................................................................453.7.1.6 shutdown ...................................................................................................463.7.2 MPLS Interface Commands ......................................................................463.7.2.1 interface.....................................................................................................463.7.2.2 admin-group ..............................................................................................473.7.2.3 label-map...................................................................................................473.7.2.4 pop.............................................................................................................483.7.2.5 shutdown ...................................................................................................483.7.2.6 te-metric.....................................................................................................483.7.3 LSP Commands ........................................................................................493.7.3.1 lsp ..............................................................................................................493.7.3.2 adaptive .....................................................................................................503.7.3.3 cspf ............................................................................................................503.7.3.4 exclude ......................................................................................................503.7.3.5 fast-reroute ................................................................................................513.7.3.6 hop-limit .....................................................................................................523.7.3.7 node-protect ..............................................................................................523.7.3.8 from ...........................................................................................................523.7.3.9 hop-limit .....................................................................................................533.7.3.10 include .......................................................................................................543.7.3.11 to................................................................................................................543.7.3.12 retry-limit....................................................................................................553.7.3.13 retry-timer ..................................................................................................553.7.3.14 shutdown ...................................................................................................563.7.4 Primary and Secondary Path Commands .................................................563.7.4.1 primary.......................................................................................................563.7.4.2 secondary ..................................................................................................57



3.7.4.3 adaptive .....................................................................................................573.7.4.4 exclude ......................................................................................................583.7.4.5 hop-limit .....................................................................................................583.7.4.6 record ........................................................................................................593.7.4.7 record-label................................................................................................593.7.4.8 standby......................................................................................................593.7.4.9 path-preference .........................................................................................603.7.5 LSP Path Commands ................................................................................603.7.5.1 path............................................................................................................603.7.5.2 hop.............................................................................................................613.7.5.3 shutdown ...................................................................................................623.7.6 Static LSP Commands ..............................................................................633.7.6.1 static-lsp ....................................................................................................633.7.6.2 push...........................................................................................................633.7.6.3 shutdown ...................................................................................................643.7.6.4 to................................................................................................................643.7.7 Show MPLS Commands ...........................................................................653.7.7.1 admin-group ..............................................................................................653.7.7.2 interface.....................................................................................................663.7.7.3 label ...........................................................................................................673.7.7.4 label-range.................................................................................................683.7.7.5 static-lsp ....................................................................................................693.7.7.6 lsp ..............................................................................................................713.7.7.7 status .........................................................................................................773.7.8 Tools Commands ......................................................................................783.7.8.1 cspf ............................................................................................................783.7.8.2 resignal ......................................................................................................793.7.8.3 trap-suppress.............................................................................................793.7.8.4 update-path ...............................................................................................803.7.9 Clear Commands.......................................................................................813.7.9.1 interface.....................................................................................................813.7.9.2 lsp ..............................................................................................................813.7.9.3 interface.....................................................................................................813.7.9.4 statistics.....................................................................................................823.7.10 Debug Commands.....................................................................................823.7.10.1 mpls ...........................................................................................................823.7.10.2 event..........................................................................................................833.7.10.3 all ...............................................................................................................833.7.10.4 frr ...............................................................................................................843.7.10.5 iom.............................................................................................................843.7.10.6 lsp-setup ....................................................................................................843.7.10.7 mbb............................................................................................................853.7.10.8 misc ...........................................................................................................853.7.10.9 rsvp............................................................................................................853.7.10.10 event..........................................................................................................863.7.10.11 all ...............................................................................................................863.7.10.12 misc ...........................................................................................................873.7.10.13 nbr .............................................................................................................873.7.10.14 path............................................................................................................87

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3.7.10.15 resv............................................................................................................883.7.10.16 rr ................................................................................................................883.7.10.17 te-threshold-update ...................................................................................883.7.10.18 packet ........................................................................................................893.7.10.19 all ...............................................................................................................893.7.10.20 hello ...........................................................................................................893.7.10.21 path............................................................................................................903.7.10.22 patherr .......................................................................................................903.7.10.23 pathtear .....................................................................................................903.7.10.24 resv............................................................................................................913.7.10.25 resverr .......................................................................................................913.7.10.26 resvtear......................................................................................................91

4 Label Distribution Protocol..........................................................934.1 In this Chapter ...........................................................................................934.2 Label Distribution Protocol.........................................................................934.2.1 LDP and MPLS..........................................................................................944.2.2 DOD LDP...................................................................................................954.2.3 LDP support for LSR mode .......................................................................954.2.4 LDP Architecture .......................................................................................954.2.5 Subsystem Interrelationships ....................................................................964.2.5.1 Memory Manager and LDP .......................................................................974.2.5.2 Label Manager...........................................................................................974.2.5.3 LDP Configuration .....................................................................................974.2.5.4 Logger .......................................................................................................974.2.5.5 Service Manager .......................................................................................974.2.6 Execution Flow ..........................................................................................984.2.6.1 Initialization................................................................................................984.2.6.2 Session Lifetime ........................................................................................984.2.6.3 Adjacency Establishment ..........................................................................984.2.6.4 Session Establishment ..............................................................................994.2.7 Label Exchange.........................................................................................994.2.7.1 Other Reasons for Label Actions...............................................................994.2.7.2 Cleanup ...................................................................................................1004.2.8 LDP Filters...............................................................................................1004.2.8.1 Tracking a T-LDP Peer with BFD ............................................................1004.2.9 ECMP Support for LDP ...........................................................................1004.2.9.1 Label Operations .....................................................................................1014.3 LDP Configuration Overview ...................................................................1014.4 Configuring LDP with CLI ........................................................................1024.4.1 LDP Configuration Overview ...................................................................1024.4.2 Common Configuration Tasks .................................................................1024.4.2.1 Enabling LDP...........................................................................................1024.4.2.2 Applying Import Policies ..........................................................................1034.4.2.3 Interface Parameters ...............................................................................1034.4.2.4 Peer Parameters .....................................................................................1044.4.2.5 LDP signaling and Services.....................................................................1054.4.3 LDP Configuration Management Tasks...................................................1054.4.3.1 Disabling LDP..........................................................................................1054.4.3.2 Modify Interface Parameters ...................................................................106



4.4.4 Targeted LDP Sessions...........................................................................1064.4.4.1 Targeted Session Parameters.................................................................1064.4.4.2 Modifying Targeted session Parameters .................................................1074.4.5 Multi-Area and Multi-Instance Extensions to LDP ...................................1074.5 LDP CLI Command Reference................................................................1074.5.1 LDP Commands ......................................................................................1084.5.2 Show Commands ....................................................................................1084.5.3 Clear Commands.....................................................................................1094.5.4 Debug Commands...................................................................................1094.6 LDP CLI Configuration Commands .........................................................1094.6.1 Generic Commands.................................................................................1104.6.1.1 ldp............................................................................................................1104.6.1.2 shutdown .................................................................................................1104.6.1.3 aggregate-prefix-match ...........................................................................1114.6.1.4 prefix-exclude ..........................................................................................1114.6.1.5 dod-label-distribution ...............................................................................1124.6.1.6 import.......................................................................................................1124.6.1.7 tunnel-down-damp-time...........................................................................1134.6.1.8 hello .........................................................................................................1134.6.1.9 keepalive .................................................................................................1154.6.1.10 bfd-enable................................................................................................1164.6.2 Interface Commands ...............................................................................1164.6.2.1 interface-parameters ...............................................................................1164.6.2.2 interface...................................................................................................1164.6.2.3 transport-address ....................................................................................1174.6.3 Peer Parameters Commands ..................................................................1184.6.3.1 peer-parameters ......................................................................................1184.6.3.2 peer .........................................................................................................1184.6.3.3 auth-keychain ..........................................................................................1184.6.3.4 authentication-key ...................................................................................1194.6.4 Targeted session Commands..................................................................1194.6.4.1 targeted-session ......................................................................................1194.6.4.2 disable-targeted-session .........................................................................1204.6.4.3 peer .........................................................................................................1204.6.5 Show Commands ....................................................................................1214.6.5.1 auth-keychain ..........................................................................................1214.6.5.2 bindings ...................................................................................................1214.6.5.3 discovery .................................................................................................1264.6.5.4 interface...................................................................................................1284.6.5.5 parameters ..............................................................................................1304.6.5.6 peer .........................................................................................................1324.6.5.7 peer-parameters ......................................................................................1344.6.5.8 session ....................................................................................................1354.6.5.9 status .......................................................................................................1374.6.6 Clear Commands.....................................................................................1394.6.6.1 instance ...................................................................................................1394.6.6.2 interface...................................................................................................1394.6.6.3 peer .........................................................................................................1404.6.6.4 session ....................................................................................................140

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4.6.6.5 statistics...................................................................................................1414.6.7 Debug Commands...................................................................................1414.6.7.1 ldp............................................................................................................1414.6.7.2 interface...................................................................................................1414.6.7.3 peer .........................................................................................................1424.6.7.4 event........................................................................................................1424.6.7.5 bindings ...................................................................................................1424.6.7.6 messages ................................................................................................1434.6.7.7 packet ......................................................................................................1434.6.7.8 hello .........................................................................................................1434.6.7.9 init ............................................................................................................1444.6.7.10 keepalive .................................................................................................1444.6.7.11 label .........................................................................................................144

5 RSVP ............................................................................................1475.1 In this Chapter .........................................................................................1475.2 Resource Reservation Protocol (RSVP)..................................................1475.2.1 Using RSVP for MPLS.............................................................................1495.2.1.1 RSVP Traffic Engineering Extensions for MPLS.....................................1495.2.2 Traffic Engineering ..................................................................................1515.2.2.1 TE Metric (IS-IS and OSPF) ....................................................................1525.3 Configuration Process Overview .............................................................1525.4 RSVP Configuration Management Tasks................................................1535.4.1 Modifying RSVP Parameters...................................................................1535.4.2 Modifying RSVP Message Pacing Parameters .......................................1535.4.3 Deleting an Interface from RSVP ............................................................1545.5 RSVP CLI Command Reference.............................................................1545.5.1 RSVP Commands ...................................................................................1545.5.2 Show Commands ....................................................................................1555.5.3 Clear Commands.....................................................................................1555.5.4 Debug Commands...................................................................................1555.6 RSVP CLI Configuration Commands ......................................................1565.6.1 RSVP Commands ...................................................................................1565.6.1.1 shutdown .................................................................................................1565.6.1.2 rsvp..........................................................................................................1575.6.1.3 keep-multiplier .........................................................................................1575.6.1.4 rapid-retransmit-time ...............................................................................1585.6.1.5 rapid-retry-limit.........................................................................................1585.6.1.6 refresh-time .............................................................................................1595.6.1.7 interface...................................................................................................1595.6.1.8 authentication-key ...................................................................................1605.6.1.9 bfd-enable................................................................................................1615.6.1.10 hello-interval ............................................................................................1625.6.1.11 refresh-reduction .....................................................................................1635.6.1.12 reliable-delivery .......................................................................................1655.6.1.13 msg-pacing ..............................................................................................1655.6.1.14 max-burst.................................................................................................1665.6.1.15 period.......................................................................................................1665.6.2 Show RSVP Commands .........................................................................1675.6.2.1 interface...................................................................................................167



5.6.2.2 neighbor...................................................................................................1725.6.2.3 session ....................................................................................................1735.6.2.4 statistics...................................................................................................1775.6.2.5 status .......................................................................................................1785.6.3 Tools Commands ....................................................................................1795.6.3.1 cspf ..........................................................................................................1795.6.3.2 resignal ....................................................................................................1795.6.3.3 trap-suppress...........................................................................................1805.6.3.4 update-path .............................................................................................1805.6.4 Clear Commands.....................................................................................1815.6.4.1 interface...................................................................................................1815.6.4.2 lsp ............................................................................................................1825.6.4.3 interface...................................................................................................1825.6.4.4 statistics...................................................................................................1825.6.5 Debug Commands...................................................................................1835.6.5.1 mpls .........................................................................................................1835.6.5.2 event........................................................................................................1835.6.5.3 all .............................................................................................................1845.6.5.4 frr .............................................................................................................1845.6.5.5 iom...........................................................................................................1845.6.5.6 lsp-setup ..................................................................................................1855.6.5.7 mbb..........................................................................................................1855.6.5.8 misc .........................................................................................................1855.6.5.9 rsvp..........................................................................................................1865.6.5.10 event........................................................................................................1865.6.5.11 all .............................................................................................................1875.6.5.12 misc .........................................................................................................1875.6.5.13 nbr ...........................................................................................................1875.6.5.14 path..........................................................................................................1885.6.5.15 resv..........................................................................................................1885.6.5.16 rr ..............................................................................................................1885.6.5.17 te-threshold-update .................................................................................1895.6.5.18 packet ......................................................................................................1895.6.5.19 all .............................................................................................................1895.6.5.20 hello .........................................................................................................1905.6.5.21 path..........................................................................................................1905.6.5.22 patherr .....................................................................................................1905.6.5.23 pathtear ...................................................................................................1915.6.5.24 resv..........................................................................................................1915.6.5.25 resverr .....................................................................................................1915.6.5.26 resvtear....................................................................................................192

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List of figures3 Multiprotocol Label Switching.....................................................23Figure 1 Label Placement........................................................................................24Figure 2 Label Packet Placement............................................................................24Figure 3 MPLS and RSVP Configuration and Implementation Flow .......................29

4 Label Distribution Protocol..........................................................93Figure 4 Subsystem Interrelationships ....................................................................96Figure 5 LDP Configuration and Implementation...................................................102

5 RSVP ............................................................................................147Figure 6 Establishing LSPs....................................................................................148Figure 7 LSP Using RSVP Path Set Up ................................................................148

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List of tables2 Getting Started..............................................................................21Table 1 Chapters ....................................................................................................21Table 2 Command Syntax Symbols .......................................................................22

3 Multiprotocol Label Switching.....................................................23Table 3 Packet Label Field Description ..................................................................24Table 4 mpls command ..........................................................................................43Table 5 admin-group command..............................................................................44Table 6 hold-timer command..................................................................................44Table 7 resignal-timer command............................................................................45Table 8 secondary-fast-retry-timer command.........................................................45Table 9 shutdown command ..................................................................................46Table 10 interface command....................................................................................46Table 11 admin-group command..............................................................................47Table 12 label-map command ..................................................................................47Table 13 pop command............................................................................................48Table 14 shutdown command ..................................................................................48Table 15 te-metric command....................................................................................48Table 16 lsp command .............................................................................................49Table 17 adaptive command ....................................................................................50Table 18 cspf command ...........................................................................................50Table 19 exclude command .....................................................................................50Table 20 fast-reroute command ...............................................................................51Table 21 hop-limit command ....................................................................................52Table 22 node-protect command..............................................................................52Table 23 from command...........................................................................................52Table 24 hop-limit command ....................................................................................53Table 25 include command ......................................................................................54Table 26 to command...............................................................................................54Table 27 retry-limit command...................................................................................55Table 28 retry-timer command .................................................................................55Table 29 shutdown command ..................................................................................56Table 30 primary command......................................................................................56Table 31 secondary command .................................................................................57Table 32 adaptive command ....................................................................................57Table 33 exclude command .....................................................................................58Table 34 hop-limit command ....................................................................................58Table 35 record command........................................................................................59Table 36 record-label command...............................................................................59Table 37 standby command .....................................................................................59Table 38 path-preference command ........................................................................60Table 39 path command...........................................................................................60Table 40 hop command............................................................................................61Table 41 shutdown command ..................................................................................62Table 42 static-lsp command....................................................................................63Table 43 push command..........................................................................................63

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Table 44 shutdown command ..................................................................................64Table 45 to command...............................................................................................64Table 46 admin-group command..............................................................................65Table 47 MPLS Administrative Group Output Fields................................................65Table 48 interface command....................................................................................66Table 49 MPLS Interface Output Fields ...................................................................66Table 50 label command ..........................................................................................67Table 51 MPLS Labels Output Fields.......................................................................68Table 52 label-range command................................................................................68Table 53 MPLS Label Range Output Fields .............................................................69Table 54 static-lsp command....................................................................................69Table 55 MPLS Static LSP Output Fields.................................................................70Table 56 interface command....................................................................................71Table 57 MPLS LSP Output Fields...........................................................................71Table 58 status command ........................................................................................77Table 59 MPLS Status Output Fields .......................................................................77Table 60 cspf command ...........................................................................................78Table 61 resignal command .....................................................................................79Table 62 trap-suppress command............................................................................79Table 63 update-path command...............................................................................80Table 64 interface command....................................................................................81Table 65 lsp command .............................................................................................81Table 66 interface command....................................................................................81Table 67 statistics command....................................................................................82Table 68 mpls command ..........................................................................................82Table 69 event command.........................................................................................83Table 70 all command ..............................................................................................83Table 71 frr command ..............................................................................................84Table 72 iom command............................................................................................84Table 73 lsp-setup command ...................................................................................84Table 74 frr command ..............................................................................................85Table 75 misc command ..........................................................................................85Table 76 rsvp command...........................................................................................85Table 77 event command.........................................................................................86Table 78 all command ..............................................................................................86Table 79 misc command ..........................................................................................87Table 80 nbr command.............................................................................................87Table 81 path command...........................................................................................87Table 82 resv command...........................................................................................88Table 83 rr command ...............................................................................................88Table 84 te-threshold-update command...................................................................88Table 85 packet command .......................................................................................89Table 86 all command ..............................................................................................89Table 87 hello command ..........................................................................................89Table 88 path command...........................................................................................90Table 89 patherr command ......................................................................................90Table 90 pathtear command.....................................................................................90Table 91 resv command...........................................................................................91Table 92 resverr command.......................................................................................91



Table 93 resvtear command.....................................................................................91

4 Label Distribution Protocol..........................................................93Table 94 ldp command ...........................................................................................110Table 95 shutdown command ................................................................................110Table 96 aggregate-prefix-match command...........................................................111Table 97 prefix-exclude command .........................................................................111Table 98 dod-label-distribution command ..............................................................112Table 99 import command......................................................................................112Table 100 tunnel-down-damp-time command ..........................................................113Table 101 hello command ........................................................................................113Table 102 Default values..........................................................................................114Table 103 keepalive command.................................................................................115Table 104 Default values..........................................................................................115Table 105 bfd-enable command...............................................................................116Table 106 interface-parameters command...............................................................116Table 107 interface command..................................................................................116Table 108 transport-address command....................................................................117Table 109 peer-parameters command .....................................................................118Table 110 peer command.........................................................................................118Table 111 auth-keychain command .........................................................................118Table 112 authentication-key command...................................................................119Table 113 targeted-session command .....................................................................119Table 114 disable-targeted-session command.........................................................120Table 115 peer command.........................................................................................120Table 116 auth-keychain command .........................................................................121Table 117 bindings command ..................................................................................121Table 118 LDP Bindings Output ...............................................................................122Table 119 discovery command.................................................................................126Table 120 LDP Discovery Output .............................................................................127Table 121 interface command..................................................................................128Table 122 LDP Interface Output...............................................................................129Table 123 parameters command..............................................................................130Table 124 LDP parameters Output...........................................................................130Table 125 peer command.........................................................................................132Table 126 LDP peer Output......................................................................................133Table 127 peer-parameters command .....................................................................134Table 128 LDP peer-parameter Output ....................................................................135Table 129 session command....................................................................................135Table 130 LDP session Output.................................................................................136Table 131 status command ......................................................................................137Table 132 LDP status Output ...................................................................................137Table 133 instance command ..................................................................................139Table 134 interface command..................................................................................139Table 135 peer command.........................................................................................140Table 136 session command....................................................................................140Table 137 statistics command..................................................................................141Table 138 ldp command ...........................................................................................141Table 139 interface command..................................................................................141Table 140 peer command.........................................................................................142

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Table 141 event command.......................................................................................142Table 142 bindings command ..................................................................................142Table 143 messages command ...............................................................................143Table 144 messages command ...............................................................................143Table 145 hello command ........................................................................................143Table 146 init command ...........................................................................................144Table 147 keepalive command.................................................................................144Table 148 label command ........................................................................................144

5 RSVP ............................................................................................147Table 149 shutdown command ................................................................................156Table 150 rsvp command.........................................................................................157Table 151 keep-multiplier command ........................................................................157Table 152 rapid-retransmit-time command...............................................................158Table 153 rapid-retry-limit command........................................................................158Table 154 refresh-time command.............................................................................159Table 155 interface command..................................................................................159Table 156 authentication-key command...................................................................160Table 157 bfd-enable command...............................................................................161Table 158 hello-interval command ...........................................................................162Table 159 refresh-reduction command.....................................................................163Table 160 reliable-delivery command.......................................................................165Table 161 msg-pacing command .............................................................................165Table 162 max-burst command................................................................................166Table 163 period command......................................................................................166Table 164 interface command..................................................................................167Table 165 RSVP Interface Output Fields .................................................................167Table 166 neighbor command..................................................................................172Table 167 session command....................................................................................173Table 168 RSVP session Output Fields ...................................................................173Table 169 statistics command..................................................................................177Table 170 RSVP statistics Output Fields..................................................................177Table 171 status command ......................................................................................178Table 172 RSVP status Output Fields......................................................................178Table 173 cspf command .........................................................................................179Table 174 resignal command ...................................................................................179Table 175 trap-suppress command..........................................................................180Table 176 update-path command.............................................................................180Table 177 interface command..................................................................................181Table 178 lsp command ...........................................................................................182Table 179 interface command..................................................................................182Table 180 statistics command..................................................................................182Table 181 mpls command ........................................................................................183Table 182 event command.......................................................................................183Table 183 all command ............................................................................................184Table 184 frr command ............................................................................................184Table 185 iom command..........................................................................................184Table 186 lsp-setup command .................................................................................185Table 187 frr command ............................................................................................185Table 188 misc command ........................................................................................185



Table 189 rsvp command.........................................................................................186Table 190 event command.......................................................................................186Table 191 all command ............................................................................................187Table 192 misc command ........................................................................................187Table 193 nbr command...........................................................................................187Table 194 path command.........................................................................................188Table 195 resv command.........................................................................................188Table 196 rr command .............................................................................................188Table 197 te-threshold-update command.................................................................189Table 198 packet command .....................................................................................189Table 199 all command ............................................................................................189Table 200 hello command ........................................................................................190Table 201 path command.........................................................................................190Table 202 patherr command ....................................................................................190Table 203 pathtear command...................................................................................191Table 204 resv command.........................................................................................191Table 205 resverr command.....................................................................................191Table 206 resvtear command...................................................................................192

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Preface


1 PrefaceThis preface provides general information about the documentation set for the 7302 Intelligent Services Access Manager (7302 ISAM), the 7330 Intelligent Services Access Manager Fiber to the Node (7330 ISAM FTTN) and the 7360 Intelligent Services Access Manager FX (7360 ISAM FX).

1.1 Scope

This documentation set provides information about safety, features and functionality, ordering, hardware installation and maintenance, CLI and TL1 commands, and software upgrade and migration procedures for the current release.

1.2 Applicable releases

This edition of the FD 100/320 Gbps NT and FX NT IHub MPLS Guide is applicable from R5.4.01 onwards.

1.3 Audience

This documentation set is intended for planners, administrators, operators, and maintenance personnel involved in installing, upgrading, or maintaining the 7302 ISAM, the 7330 ISAM FTTN or the 7360 ISAM FX.

1.4 Required knowledge

Readers must be familiar with general telecommunications principles.

1.5 Product naming

When the term “ISAM” is used alone, then the 7302 ISAM, the 7330 ISAM FTTN and the 7360 ISAM FX are meant. If a feature is valid for only one of the products, the applicability will be explicitly stated.

1.6 Documents

Refer to the Product Information document for your product to see a list of all relevant customer documents and their part numbers.

Preface

20



1.7 Acronyms and initialisms

See the ISAM Glossary for the expansion of acronyms and initialisms used in this documentation set.

1.8 Safety information

For safety information, see the Safety Manual for your product.

1.9 Special information

The following are examples of how special information is presented in this document.

1.10 Release notes

Be sure to refer to the release notes (such as the Customer Release Notes or Emergency Fix Release Note) issued for software loads of your product before you install or use the product. The release notes provide important information about the software load.

Danger — Danger indicates that the described activity or situation may result in serious personal injury or death; for example, high voltage or electric shock hazards.

Warning — Warning indicates that the described activity or situation may, or will, cause equipment damage or serious performance problems.

Caution — Caution indicates that the described activity or situation may, or will, cause service interruption.

Note — A note provides information that is, or may be, of special interest.


Getting Started


2 Getting Started2.1 In This Document

2.2 Services Command Reference

2.3 CLI Command Syntax Symbols

2.1 In This Document

This document provides process flow information to configure routers and router protocols.

This guide is presented in an overall logical configuration flow. Each section describes a software area and provides CLI syntax and command usage to configure parameters for a functional area.

Table 1 lists the chapters in this document.

Table 1 Chapters

2.2 Services Command Reference

This document provides the command reference trees for the configuration of routers and router protocols.

Topics include:

• MPLS CLI Command Reference• LDP CLI Command Reference• RSVP CLI Command Reference

2.3 CLI Command Syntax Symbols

This section explains the symbols used throughout this manual within a CLI command syntax, see Table 2.

Chapters

Multiprotocol Label Switching

Label Distribution Protocol

Getting Started

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Table 2 Command Syntax Symbols

Symbol Description

| A vertical line indicates that one of the parameters within the brackets or braces is required.Example: tcp-ack {true|false}

[ ] Brackets indicate optional parameters.Example: redirects [number seconds]

< > Angle brackets indicate that you must enter text based on the parameter inside the brackets.Example: interface

{ } Braces indicate that one of the parameters must be selected.Example: default-action {drop|forward}

[{ }] Braces within square brackets indicates that you must choose one of the optional parameters.Example: sdp sdp-id [{gre|mpls}]

Bold Commands in bold indicate commands and keywords.

Italic Commands in italics indicate command options.

Note — For more information on CLI commands in general, see the CLI Command Guide for FD 100/320Gbps NT and FX NT.




3 Multiprotocol Label Switching3.1 In this Chapter

3.2 MPLS

3.3 MPLS Service Usage

3.4 Configuration Process Overview

3.5 Configuring MPLS and RSVP with CLI

3.6 MPLS CLI Command Reference

3.7 MPLS CLI Configuration Commands

3.1 In this Chapter

Multiprotocol Label Switching (MPLS) is a label switching technology that provides the ability to set up connection-oriented paths over a connectionless IP network. MPLS facilitates network traffic flow and provides a mechanism to engineer network traffic patterns independently from routing tables. MPLS sets up a specific path for a sequence of packets. The packets are identified by a label inserted into each packet.

3.2 MPLS

3.2.1 MPLS Label StackMPLS requires a set of procedures to enhance network layer packets with label stacks which thereby turns them into labeled packets. Routers that support MPLS are known as Label Switching Routers (LSRs). In order to transmit a labeled packet on a particular data link, an LSR must support the encoding technique which, when given a label stack and a network layer packet, produces a labeled packet.

In MPLS, packets can carry not just one label, but a set of labels in a stack. An LSR can swap the label at the top of the stack, pop the stack, or swap the label and push one or more labels into the stack. The processing of a labeled packet is completely independent of the level of hierarchy. The processing is always based on the top label, without regard for the possibility that some number of other labels may have been above it in the past, or that some number of other labels may be below it at present.


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As described in RFC 3032, MPLS Label Stack Encoding, the label stack is represented as a sequence of label stack entries. Each label stack entry is represented by 4 octets. Figure 1 displays the label placement in a packet.

Figure 1 Label Placement

Table 3 Packet Label Field Description

A stack can carry several labels, organized in a last in/first out order. The top of the label stack appears first in the packet and the bottom of the stack appears last (Figure 2).

Figure 2 Label Packet Placement

The label value at the top of the stack is looked up when a labeled packet is received. A successful lookup reveals:

• the next hop where the packet is to be forwarded• the operation to be performed on the label stack before forwarding.

In addition, the lookup may reveal outgoing data link encapsulation and other information needed to properly forward the packet.

An empty label stack can be thought of as an unlabeled packet. An empty label stack has zero (0) depth. The label at the bottom of the stack is referred to as the Level 1 label. The label above it (if it exists) is the Level 2 label, and so on. The label at the top of the stack is referred to as the Level m label.

Labeled packet processing is independent of the level of hierarchy. Processing is always based on the top label in the stack which includes information about the operations to perform on the label stack of the packet.

Field Description

Label This 20-bit field carries the actual value (unstructured) of the label.

Exp This 3-bit field is reserved for experimental use. It is currently used for Class of Service (CoS).

S This bit is set to 1 for the last entry (bottom) in the label stack, and 0 for all other label stack entries.

TTL This 8-bit field is used to encode a TTL value.

0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 00 2

Label 1 Exp S TTL

2 31

Layer 2 Header Top Label ... Bottom Label Data Packet




3.2.1.1 Label ValuesPackets traveling along an LSP (see Label Switching Routers on page 21) are identified by its label, the 20-bit, unsigned integer. The range is 0 through 1,048,575. Label values 0-15 are reserved and are defined below as follows:

• A value of 0 represents the IPv4 Explicit NULL Label. This Label value is legal only at the bottom of the Label stack. It indicates that the Label stack must be popped, and the packet forwarding must be based on the IPv4 header.

• A value of 1 represents the router alert Label. This Label value is legal anywhere in the Label stack except at the bottom. When a received packet contains this Label value at the top of the Label stack, it is delivered to a local software module for processing. The actual packet forwarding is determined by the Label beneath it in the stack. However, if the packet is further forwarded, the router alert Label should be pushed back onto the Label stack before forwarding. The use of this Label is analogous to the use of the router alert option in IP packets. Since this Label cannot occur at the bottom of the stack, it is not associated with a particular network layer protocol.

• A value of 3 represents the Implicit NULL Label. This is a Label that a Label Switching Router (LSR) can assign and distribute, but which never actually appears in the encapsulation. When an LSR would otherwise replace the Label at the top of the stack with a new Label, but the new Label is Implicit NULL, the LSR pops the stack instead of doing the replacement. Although this value may never appear in the encapsulation, it needs to be specified in the Label Distribution Protocol (LDP), so a value is reserved.

• Values 4-15 are reserved for future use.

ISAM uses labels for MPLS, RSVP-TE and LDP, as well as packet-based services such as VLL and VPLS.

Label values 16 through 1.048.575 are defined as follows:

• Label values 16 through 31 are reserved for future use.• Label values 32 through 1.023 are available for static assignment.• Label values 1.024 through 2.047 are reserved for future use.• Label values 2.048 through 4.095 are statically assigned for services.• Label values 32.768 through 131.071 are dynamically assigned for both MPLS

and services.• Label values 131.072 through 1.048.575 are reserved for future use.


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3.2.2 Label Switching RoutersLSRs perform the label switching function. LSRs perform different functions based on it’s position in an LSP. Routers in an LSP do one of the following:

• The router at the beginning of an LSP is the ingress label edge router (ILER). The ingress router can encapsulate packets with an MPLS header and forward it to the next router along the path. An LSP can only have one ingress router.

• A Label Switching Router (LSR) can be any intermediate router in the LSP between the ingress and egress routers. An LSR swaps the incoming label with the outgoing MPLS label and forwards the MPLS packets it receives to the next router in the MPLS path (LSP). An LSP can have 0-253 transit routers.

• The router at the end of an LSP is the egress label edge router (ELER). The egress router strips the MPLS encapsulation which changes it from an MPLS packet to a data packet, and then forwards the packet to its final destination using information in the forwarding table. Each LSP can have only one egress router. The ingress and egress routers in an LSP cannot be the same router.

A router in your network can act as an ingress, egress, or transit router for one or more LSPs, depending on your network design.

An LSP is confined to one IGP area for LSPs using constrained-path. They cannot cross an autonomous system (AS) boundary.

Static LSPs can cross AS boundaries. The intermediate hops are manually configured so the LSP has no dependence on the IGP topology or a local forwarding table.

3.2.2.1 LSP TypesThe following are LSP types:

• Static LSPs:A static LSP specifies a static path. All routers that the LSP traverses must be configured manually with labels. No signaling such as RSVP or LDP is required.

• Signaled LSP:LSPs are set up using a signaling protocol such as RSVP-TE or LDP. The signaling protocol allows labels to be assigned from an ingress router to the egress router. Signaling is triggered by the ingress routers. Configuration is required only on the ingress router and is not required on intermediate routers. Signaling also facilitates path selection.

There are two signaled LSP types:

• Explicit-path LSPs:MPLS uses RSVP-TE to set up explicit path LSPs. The hops within the LSP are configured manually. The intermediate hops must be configured as either strict or loose meaning that the LSP must take either a direct path from the previous hop




router to this router (strict) or can traverse through other routers (loose).You can control how the path is set up. They are similar to static LSPs but require less configuration. See section Resource Reservation Protocol (RSVP) in the RSVP chapter.

• Constrained-path LSPs:The intermediate hops of the LSP are dynamically assigned. A constrained path LSP relies on the Constrained Shortest Path First (CSPF) routing algorithm to find a path which satisfies the constraints for the LSP. In turn, CSPF relies on the topology database provided by the extended IGP such as OSPF or IS-IS. Once the path is found by CSPF, RSVP uses the path to request the LSP set up. CSPF calculates the shortest path based on the constraints provided such as bandwidth, class of service, and specified hops.

If fast reroute is configured, the ingress router signals the routers downstream. Each downstream router sets up a detour for the LSP. If a downstream router does not support fast reroute, the request is ignored and the router continues to support the LSP. This can cause some of the detours to fail, but otherwise the LSP is not impacted.

Hop-limit parameter specifies the maximum number of hops that an LSP can traverse, including the ingress and egress routers. An LSP is not set up if the hop limit is exceeded. The hop count is set to 255 by default for the primary and secondary paths. It is set to 16 by default for a detour LSP path.

3.2.2.2 Detour LSPsThe ISAM does not support bypass LSPs but supports detour LSPs.

The behavior of an LSP at an ingress LER with both fast reroute and a standby LSP path configured is as follows:

• When a downstream detour becomes active at a point of local repair (PLR):The ingress LER switches to the standby LSP path. If the primary LSP path is repaired subsequently at the PLR, the LSP will switch back to the primary path. If the standby goes down, the LSP is switched back to the primary, even though it is still on the detour at the PLR. If the primary goes down at the ingress while the LSP is on the standby, the detour at the ingress is cleaned up and for one-to-one detours a "path tear" is sent for the detour path. In other words, the detour at the ingress does not protect the standby. If and when the primary LSP is again successfully re-signaled, the ingress detour state machine will be restarted.

• When the primary fails at the ingress:The LSP switches to the detour path. If a standby is available then LSP would switch to standby on expiration of hold-timer. If hold-timer is disabled then switchover to standby would happen immediately. On successful global revert of primary path, the LSP would switch back to the primary path.

• Admin groups are not taken into account when creating detours for LSPs.


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3.2.3 Advanced MPLS/RSVP Features

3.2.3.1 LSP Path ChangeThe command tools perform router mpls update-path {lsp lsp-name path current-path-name new-path new-path-name} instructs MPLS to replace the path of the primary or secondary LSP.

The primary or secondary LSP path is indirectly identified via the current-path-name value. In existing implementation, the same path name cannot be used more than once in a given LSP name.

This command is also supported on an SNMP interface.

This command applies to both CSPF LSP and to a non-CSPF LSP. However, it will only be honored when the specified current-path-name has the adaptive option enabled. The adaptive option can be enabled the LSP level or at the path level.

The new path must be first configured in CLI or provided via SNMP. The CLI command configure router mpls path path-name is used to enter the path.

The command fails if any of the following conditions are satisfied:

• The specified current-path-name of this LSP does not have the adaptive option enabled.

• The specified new-path-name value does not correspond to a previously defined path.

• The specified new-path-name value exists but is being used by any path of the same LSP, including this one.

When the command is executed, MPLS performs the following procedures:

• MPLS performs a single MBB attempt to move the LSP path to the new path.• If the MBB is successful, MPLS updates the new path.

• MPLS writes the corresponding NHLFE in the data path if this path is the current backup path for the primary.

• If the current path is the active LSP path, it will update the path, write the new NHLFE in the data path, which will cause traffic to switch to the new path.

• If the MBB is not successful, the path retains it current value.• The update-path MBB has the same priority as the manual re-signal MBB.

3.3 MPLS Service Usage

ISAM with MPLS enables service providers to deliver virtual private networks (VPNs) and Internet access using MPLS tunnels.




3.3.1 Service Distribution PathsA service distribution path (SDP) acts as a logical way of directing traffic from one ISAM router to another through a uni-directional (one-way) service tunnel. The SDP terminates at the far-end ISAM router which directs packets to the correct service egress service access point (SAP) on that device. All services mapped to an SDP use the same transport encapsulation type defined for the SDP (MPLS).

For information about service transport tunnels, refer to the Service Distribution Paths (SDPs) section in the FD 100/320Gbps NT and FX NT IHub Services Guide.

3.4 Configuration Process Overview

Figure 3 displays the process to configure MPLS and RSVP parameters.

Figure 3 MPLS and RSVP Configuration and Implementation Flow

3.4.1 Configuration NotesThis section describes MPLS and RSVP caveats:

• Interfaces must already be configured in the configure>router>interface context before they can be specified in MPLS.

• A router interface must be specified in the configure>router>mpls context in order to apply it or modify parameters in the configure>router>rsvp context.

Note — GRE encapsulation is not supported.

START

ENABLE MPLS

CONFIGURE MPLS INTERFACE PARAMETERS

RUN

CONFIGURE LSP PARAMETERS

CONFIGURE RSVP INTERFACE PARAMETERS

CONFIGURE PATH PARAMETERS

CONFIGURE LSP-PATH PARAMETERS


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• A system interface must be configured and specified in the configure>router>mpls context.

• Paths must be created before they can be applied to an LSP.

3.5 Configuring MPLS and RSVP with CLI

This section provides information to configure MPLS and RSVP using the Command Line Interface (CLI).

Topics in this section include:

• MPLS Configuration Overview• LSPs• Paths• Router Interface• Choosing the Signaling Protocol

• Basic MPLS Configuration• Common Configuration Tasks• MPLS Configuration Management Tasks

3.5.1 MPLS Configuration OverviewMultiprotocol Label Switching (MPLS) enables routers to forward traffic based on a simple label embedded into the packet header. A router examines the label to determine the next hop for the packet, saving time for router address lookups to the next node when forwarding packets.

In order to implement MPLS, the following entities must be configured:

• LSPs• Paths• Router Interface

3.5.1.1 LSPsTo configure MPLS-signaled label-switched paths (LSPs), an LSP must run from an ingress router to an egress router. Configure only the ingress router and configure LSPs to allow the software to make the forwarding decisions or statically configure some or all routers in the path. The LSP is set up by Resource Reservation Protocol (RSVP), through RSVP signaling messages. The ISAM automatically manages label values. Labels that are automatically assigned have values ranging from 1,024 through 1,048,575 (see Label Values).




A static LSP is a manually set up LSP where the nexthop IP address and the outgoing label are explicitly specified.

3.5.1.2 PathsTo configure signaled LSPs, you must first create one or more named paths on the ingress router. For each path, the transit routers (hops) in the path are specified.

3.5.1.3 Router InterfaceAt least one router interface and one system interface must be defined in the configure>router>interface context in order to configure MPLS on an interface.

3.5.1.4 Choosing the Signaling ProtocolIf only static label switched paths are used in your configurations, then you must manually define the paths through the MPLS network. Label mappings and actions configured at each hop must be specified. You do not need to enable RSVP or LDP if you are configuring static LSPs.

If dynamic LSP signaling is implemented in your network, then one of the two supported signaling protocols, RSVP or LDP, must be specified. Enable signaling protocols only on the links where the functionality is required.

In order to implement MPLS, the following entities must be enabled:

• MPLS must be enabled on all routers that are part of an LSP.• RSVP or LDP must be enabled on the same routers.

When MPLS is enabled and either RSVP or LDP is also enabled, MPLS uses RSVP or LDP to set up the configured LSPs. For example, when you configure an LSP with both MPLS and RSVP running, RSVP initiates a session for the LSP. RSVP uses the local router as the RSVP session sender and the LSP destination as the RSVP session receiver. When the RSVP session is created, the LSP is set up on the path created by the session. If the session is not successfully created, RSVP notifies MPLS; MPLS can then either initiate backup paths or retry the initial path.

3.5.2 Basic MPLS ConfigurationThis section provides information to configure MPLS and configuration examples of common configuration tasks. To enable MPLS on ISAM, you must configure at least one MPLS interface. The other MPLS configuration parameters are optional. The following displays an example of an MPLS configuration.


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A:ALA