Sigtran Workshop

7/18/2019 Sigtran Workshop

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All Rights Reserved Alcatel-Lucent 2007, #####

Alcatel-Lucent A5060 SigTranAlcatel-Lucent A5060 SigTran


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All Rights Reserved Alcatel-Lucent 2007, Plano, T, !SA

2 Introduction to Si Tran

Agenda

S"TRA$ "ntroduction

S%TP

&'!A

AL! A5060 Sigtran Solution

S"TRA$ (P"s

S"TRA$ Alar)s * +vents

S"TRA$ "A$ST"%

Trou.leshooting / * A

&onitoring in Live $etor1 T&3

Re4erences


3/91



What is SIGTRAN ?

SIGTRANSIGTRANis a set o4 rotocols de4ined to transort SS7 )essages over "P

netor1s SIGTRANSIGTRANallos "P netor1s to inter-or1 ith Sitched %ircuit $etor1

S%$3

&% &edia atea %ontroller

%all %ontrol .eteen S and & %ontrolling Access "P PST$3

S Signalling atea

"nter4ace "P8SS7 netor1s

Passing signalling )essages to84ro) "P $odes

& &edia atea Pac1eti9ation o4 voice tra44ic

Rate adatation

Trans)itting tra44ic toards the destination

SIGTRAN


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S"TRA$ Stac1

ALCATEL-LUCENT Solution

SIGTRANis composed of thee elements!Adatation laer, i:e: &2PA, &2!A, &'!A, etc

Strea) %ontrol Trans)ission Protocol S%TP3

Standard "P stac1

SCTP(RFC 2960)

M2PA(RFC4165)

M2UA(RFC 3331)

M3UA(RFC 4666)

MTP3

SCCP

SUA(RFC 3868)

IUA(RFC 3057)

TCAP Q.931

MAP/CAP/IN

IP

ISUP / BICC / TUP


5/91



A.out Adatation Laers

"#UA"#UA$ &TP2 !ser Adatation laer: &TP2-&TP' co))unication is

re)ote and are &2!A )essages: The are non-ri)itivessentover "P: S is not an SS7 node as there is no &TP' ;R

IUAIUA - "S$ !ser Adatation laer suorts the transort o4 "S$signaling directl .eteen S-&% over "P ;R


6/91



i44erences .eteen &2!A and &2PA

A! "#UA! "T'"T&% (re)ote) communication isdefined as "#UA messages and sent o*e theI& connection+

"#&A! I&S& pocesses "T'"T&% pimiti*es+

,! "#UA! SG-"GC connection is not an SS lin.+It is an e/tension of "T& to a emote entit0+

"#&A! SG-I&S& connection is an SS lin.+

C! "#UA! SG is not an SS node and has no pointcode+

"#&A! SG is an SS node 1ith a point code+

2! "#UA! SG does not ha*e uppe SS la0essince it has no "T&%+

"#&A! SG can ha*e uppe SS la0es3 e+g+3SCC&+

E! "#UA! uses "#UA management pocedues+

"#&A! elies on "T&% fo managementpocedues+

"#UA

"

#&A


7/91



h &'!A is chosen 4or )o.ile alications B

"#UA is not suita4le

designed 4or &TP2 .ac1hauling invocation o4 re)ote &TP2 laer3

no 4ull "P eer to eer )ode, onl "P-SS7 legac interor1ing

eCa)le D rela o4 legac SS7 associated signalling ter)inated at a &

toard a &% through "P

SUA is not suita4le una.le to transort "S!P * E"%% signaling S%%P onl3

IUA is not suita4le

una.le to transort "S!P * E"%% signaling "S$ onl3

"#&A could ha*e 4een suita4le

onl eer to eer )ode, a legac SS7 lin1 is relaced . an FSS7 "P

lin1G an S%TP association3

&TP' )anage)ent is 1et unchanged


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SCTPSCTPStream Control Transmission ProtocolStream Control Transmission Protocol

RFC2960RFC2960


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"oti*ation $ Wh0 SCT&3 4ut not TC&?

The &o4lem 1ith TC&!The &o4lem 1ith TC&!

T%P is .te-strea)ed: "t rovides a singlestrea) o4 data and guarantees

that data to .e delivered in .te-seHuence order

T%P is sensitive to delayscaused . netor1 errors loss o4 .tes, )essages

or seHuence violation3

"n case error occurs, T%P ill hold u deliver o4 allsu.seHuent data


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The Solution

Sessions

5ault coection

5lo1 ContolCongestion Contol

Relia4le

Connection-less

Unelia4le

"essage-4ased

5aming

U2&

5agmentation

Ne1 Concepts"ulti-homing

"ulti-steaming

Coo.ie and ,undling

TC&

SCT&


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S%TP


12/91



6e0 SCT& 5eatues!

&essage oriented rather than .te oriented

Suort multi-streamcaa.ilit, i:e: trans)it data through )ultilestrea)s, each ith indeendent seHuenced deliver: The nu).er o4

inco)ing and outgoing strea)s is negotiated hen association is

esta.lished

Suort multi-homing, i:e: each S%TP endoint )a .e 1non .

)ultile "P addresses: "4 one route .eco)es unavaila.le, another ill.e used:


13/91



S%TPD &ulti-Strea)

To deliver "S!P )essages there is a need to decoule )essages .ased onthe calls such as %"%3 so that )essages associated ith di44erent callscan .e delivered indeendentl

With multi-stream

alls 2 ! all 3 are

"rocessed normall#$

Call 1

Call 2

Call 3

Call 2

Call 3


14/91



S%TPD &ulti-Strea)

An SCT& pac.et ma0 4e composed of multiple chun.s (contains SS

messages) 1hich 4elong to multiple steams Chun.s ae 7ueued if necessa0 and then deli*eed to SCT& Use &at in

se7uence pe steam


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&ulti-ho)ing

+ndoint Association is co)osed evenl o4 several aths

nl one ath is active at a given ti)e

Paths are )onitored to detect 4ailures via eCchanging FIeart.eatG

Active Path

inactive Path

Data & Acks

Heartbeats / Acks


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S%TP (e Ter)s

Chun.A unit of information within an SCTP packet, consisting o4 a chun1 header and chun1-seci4ic content "nit, Ac1, ata,J3:

SCT& &ac.etThe unit o4 data deliver across the inter4ace .eteen S%TP and the connectionless ac1et netor1 e:g:, "P3: An S%TP

ac1et includes i3 common SCTP header, ii3 ossi.le SCTP control chunks, and iii3 user dataencasulated ithin S%TPATA chun1s:

Tansmission Se7uence Num4es (TSN)A '2-.it seHuence nu).er used internall . S%TP: One TSN is attached to each chunkcontaining user data to er)it thereceiving S%TP endoint to ac1noledge its receit and detect dulicate deliveries:

Signalling Endpoint (SE&)The logical sender8receiver o4 S%TP ac1ets: n a )ulti-ho)ed host, an S%TP endoint is reresented to its eers as a

co).ination o4 a set o4 eligi.le destination transort addresses to hich S%TP ac1ets can .e sent and a set o4 eligi.lesource transort addresses 4ro) hich S%TP ac1ets can .e received: All transort addresses used . an S%TP endoint

)ust use the same port numer, .ut can use multiple !P addresses: A transort address used . an S%TP endoint )ustnot.e used . another S%TP endoint: "n other ords, a transport address is uni"ue to an SCTP endpoint:

Association

A rotocol relationshi .eteen S%TP endoints, co)osed o4 the i3 two SCTP endpointsand ii3protocol stateinformationincluding Keri4ication Tags and the currentl active set o4 Trans)ission SeHuence $u).ers TS$s3, etc: Anassociation can .e uniHuel identi4ied . the transort addresses used . the endoints in the association: To S%TPendoints &!ST NOThave )ore than one S%TP association .eteen the) at an given ti)e:

SteamA uni-directional lo#ical channelesta.lished 4ro) one to another associated S%TP endoint, ithin hich all user)essages are delivered in seHuence eCcet 4or those su.)itted to the unordered deliver service


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"llustration o4 S%TP Association Path and Strea)

IPIP

AssociationPath

Port

Primary Path

IP Address

Transport Address

SCTPSCTP

IPIP

SCTP USERSCTP USER

SCTPSCTP

SCTP USERSCTP USER

SCTP End PointSCTP End Point

Stream in each path


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1% Introduction to Si Tran

"llustration o4 S%TP Strea)s, Pac1ets and %hun1s

SS7 NetworkSS7 Network

ElementElement

SCTPLayer

IP Layer

User Adaption Layer

SS7 NetworkSS7 Network

ElementElement

SCTPLayer

IP Layer

User Adaption Layer

Uses

User Data

Rx Stream_j

Tx Stream_1Tx Stream_k

Rx Stream_1

SCTP AssociationSCTP Association

SCTPSCTP

end pointend point

SCTPSCTP

end pointend point

Message 1 Message 2

DATA chunks

IP header

SCTP common header

SCTP control chunks

DATA chunk header

SCTP

acket

IP datagram

!2" 12 !


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S%TP Pac1et


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S%TP %hun1


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22/91



Selective Ac1noledge)ent SA%(3

+ver chun1 in a ac1et sent out . S%TP )ust .e ac1noledged

"4 ac1noledge chun1 is not received AP is detected3, retrans)issiono4 the chun1 is er4or)ed

Ac1noledg)ents can .e cu)ulated and sent out ithin one SA%( )essage

&ultile APs can .e reorted in one SA%( )essage


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%riteria o4 retrans)ission

SCTP Common header12

SAC9 chunk

IP header2"

SCTP acket

Retrans)ission occurs hen

Ti)eout

SA%( contains TS$ a

SA6 ! Selecti*e Ac.no1ledgement

Chun.! A unit of info in an SCT& pac.et

(2) (2)

(4) (5)

The actual value is

the offset to the next

received chunk

The offset to the endof received block


24/91


$%&'$%&'$TP%(&ser 'daptation )a*er$TP%(&ser 'daptation )a*er

RFC+666RFC+666


25/91



hat is &'!A and hat is notB

What is "%UA?

&'!A stands 4or &TP' !ser Adatation Laer and is de4ined in RFC4666 &'!A rovides transort o4 &TP'-!ser signaling, e:g:, "S!P, T!P and S%%P

)essages, over "P using S%TP:

&'!A rotocol can .e used .eteen S and &% or .eteen to &%s:

&'!A rovides a eHuivalent set o4 ri)itives at its uer laers as

rovided . &TP' to its local users:

What is "%UA not?

&'!A is not an &TP' over "P: &'!A does notrovide so)e o4 the services

in &TP':


26/91



&'!A Protocol Architecture

NI5NI5

$"< is the inter4ace .eteen &TP'and &'!A: "t rovides sea)less

)aing .eteen &TP' and &'!A on

Signalling atea: "t er4or)s

rotocol ter)ination, translation

and user art rotocol

encasulations:

SE& - SS Signalling Endpoint

ST& - SS Signalling Tansfe &oint

SG - Signalling Gate1a0

"GC $ "edia Gate1a0 Contolle

NI5 - Nodal Inte-1o.ing 5unction

&T'3

&T'2

&T'1

T('

S'

I

S

)

'

&T'3

&T'2

&T'1

M3UA

ST'

I'

*I+

ST'

I'

T('

S'

I

S

)

'

I' *et,orSS7 *et,or

SEP STP - SGTekelec Eale MGCA!"2"

"ain functions of NI5!"ain functions of NI5!

"nteror1ing o4 )essages

.eteen SS7 and "P netor1s

Rela "P or SS7 )essages .ac1 to

the originator in the sa)e4or)at

Provide glo.al netor1

)anage)ent services in suort

o4 data 4los .eteen &TP' and

&'!A laers

M3UA


27/91



SS

I&

&'!A $etor1 +ntities

SE& - SS Signalling Endpoint

ST& - SS Signalling Tansfe &oint

SG - Signalling Gate1a0

AS $ Application Se*e

I&S $ I& Se*e

IW5 - Inte1o.ing 5unction NI5

A=9>9

ASI&S

I&S

EAGLE

ST&SE&


28/91



&'!A Ter)s

Application Se*e (AS)!Application Se*e (AS)!

AS is a logical entit, such as virtual sitch ordata.ase ele)ent caa.le o4 handling callrocessing 8 transaction 4or a seci4ic routing 1e

AS is identi4ied . a routing 1e, hich is a set o4SS7 ara)eters, such as S"8P%8P%8SS$:

AS is )odelled as one or )ore Alication ServerProcesses ASP3, Signalling atea Process SP3or "P Server Process "PSP3

AS&:

AS

AS

Signalling Gate1a0 (SG)!Signalling Gate1a0 (SG)!

S is a signalling agent caa.le o4 sending 8receiving Sitched %ircuit $etor1 S%$3 native

)essages at the edge o4 the SS7 8 "P netor1s:

S contains one or )ore Signalling atea Process

SP3 roviding serves as an active, .ac1u, load-

sharing or .roadcast rocess

SG

SG&:

SG

I&

I&S&:

I&S

ASAS

I&S&:

I&S

I&

SS I&


29/91



Signalling &ee &ocesses

Application Se*e &ocess (AS&)!Application Se*e &ocess (AS&)!

A rocess instance o4 an Alication Server, such as &%, "P S%P, or "P ILR:

An Alication Server Process serves as an active or .ac1u rocess o4 an

Alication Server

An ASP contains an S%TP endoint and )a .e con4igured to rocess

signalling tra44ic 4or )ore than one Alication Servers:

I& Se*e &ocess (I&S&)!I& Se*e &ocess (I&S&)! A rocess instance o4 an "P-.ased alication: An "PSP is essentiall the

sa)e as an ASP, eCcet that it uses &'!A in a oint-to-oint 4ashion:

%oncetuall, an "PSP does not use inter4ace ith3 the services o4 a

Signalling atea node:

Signalling Gate1a0 &ocess (SG&)!Signalling Gate1a0 &ocess (SG&)! An Alication Process instance running on S: "t is identi4ied . a uniHue

S%TP endoint:


30/91



"llustration o4 AS, ASP, SP, Routing (e and Routing %onteCt

RC Routing Context. A value that uniuel! identifies a Routing "e!to re#resent A##lication $erver (A$).

ASP 1ASP 1 SGP 1SGP 1

SGP nSGP n

AS:

#$%tin e' (1"#$%tin e' a1

#$%tin e' (1"#$%tin e' a2

#$%tin e' (1"#$%tin e' an

RC:

NGN N2ENGN N2E

ASP nASP n

Te.elec Signaling Gate1a0Te.elec Signaling Gate1a0

IPnet:orks

1

2

SS&net:orks

SCTPendo$nt


31/91



&'!A SS78"P $etor1 Architecture

IPdoma$n

SS&dom

a$n

NOTES:

AS1 is processing MAPprotocol for the point code A in

SS7 network 1

n x ASP serve AS1 in a load

sharing !anner

Signaling "atewa# S"1 gives

access to SS7 network 1 $ % Signaling "atewa# S"& gives

access to SS7 network 1 $ &

'ro! SS7 network 1( S"1 $

S"& are seen as STPs

ASPs load share traffic

)etween S"s and )etween

S"Ps in S"1 and S"&

IP nodeIP node

M*UAM*UA

SG2SG2SG1SG1

AS 1AS 1

ASP 1ASP 1 ASP nASP n

SGP 1SGP 1 SGP nSGP n SGP 1SGP 1 SGP nSGP n

SS&net:ork 1

SCTPendo$nt

SCTPassoc$at$on

SCTPSCTP

IPIP

SS&net:ork

2

SS&net:ork

*

IP net:orks

;oad%shar$ng

;oad%shar$ng

;oad%shar$ng

;oad%shar$ng

A


32/91



&'!A )odes

%ackhauling &ode

"nternall & and &% share the sa)e Signalling

Point %ode SP%3

&'!A is used to trans4er &TP' ri)itives .eteen

S and &%:

The lin1 .eteen S-&S% is not an SS7 lin1

&'!A is transarent to &TP' !ser laers, such as

"S!P8E"%%8S%%P:

SS& net:ork

SPCSPC

SGSG

MGCMGC

SPCSPC

SPCSPC

MGC MGC

SS&net:ork

PC< =PC< =

PC< >PC< >

$T' ode

ro& $$* net+ork, $- is seen as an $T'

- and -C have different $$* 'ointCodes.

$- functions as an $T', but not exactl!

$- is reuired to #erfor& 'oint Code

Translation/

&ipeFRouteF

0 1'C 3 1'C

0 'C 'C3

PC< ?PC< ?

PC< ?PC< ?

'C 1'C 6ATA

'C 6 1'C ATA

SG

5'C26

1'C23

5ATA

5

'C23

1'C26

5ATA

I&I&


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AS-S-S+P &odel AS8S &odel3

MTP1MTP1

MTP2MTP2

MTP3MTP3

SCCP

TCAP

MAP

MTP1MTP1

MTP2MTP2

MTP3MTP3

)P

SCTP

M3UA

)nter*$rkin +ct

)P

SCTP

M3UA

SCCP

TCAP

MAP

IPSS7

A$

$-

$7'

IP nodeIP node

SGSG

SGSG

IP nodeIP node

IP nodeIP node

SEPSEP

SEPSEP

SEPSEP

IPdoma$n

SS&legac/

STPSTP

STPSTP

Non standard$@edM*UA SG%SG

commun$cat$on orlegac/ SS& l$nks

Non standard$@edM*UA SG%SG

commun$cat$on orlegac/ SS& l$nks

This model allo1s an I& node todialog 1ith legac0 SS nodethough the inte-1o.ing of asignaling gate1a0

AS ! Application Se*eSE&! Signaling End &oint

SG ! Signaling Gate1a0


34/91



"PS-"PS &odel

)P

SCTP

M3UA

)P

SCTP

M3UA

SCCP

TCAP

MAP

IP

0'$

SCCP

TCAP

MAP

0'$

IP nodeIP node

IP nodeIP node

IP nodeIP node

IPdoma$n

This )odel allos to .uild a 4ull SS7o"P netor1 using &'!A$o eCtra-ho S is needed .eteen the "P nodes less

overhead3

"t leads to a netor1 ith a 4lat organi9ation and has the 4olloingconseHuences 4or large netor1s D

All $etor1 +le)ents that have to dialog each other have to .e inter-connected through a )esh o4 S%TP association

The nu).er o4 S%TP associations increases ith the nu).er o4 $+ inthe netor1, i4 S%TP )ulti-ho)ing is used to rovide netor1 ath

resilience, S%TP heart.eat tra44ic 4los on inactive aths alsoincreases, thus de)anding )ore netor1 .andidth and %P! oer

eending on the $+s architecture8i)le)entation, signaling

caacit eCtension o4 one $+ can lead to con4iguration i)acts on allother $+s it is connected to


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&'!A Protocol

"%UA


36/91



&'!A rotocol

Single AS& in an Application Se*e

No Registation $ RC is po*isioned

SG&SG& AS&:AS&:

AS& U&

AS& U& AC6

NT5 (AS-ACTI8E) (RCn)

AS& ACTI8E AC6 (RCn)

AS& ACTI8E (RCn)

NT5 (AS-INACTI8E) (RCn)

SG&SG& AS&:AS&:

AS& U&

AS& U& AC6

NT5 (AS-ACTI8E) (RCn)

AS& ACTI8E AC6 (RCn)

Registe Re7 (LRCn3 R6n)

Registe RES& (LRCn3 R6n)

Single AS& in Application Se*e

20namic Registation $ Client sends RC and R6 to se*e

8RC 8ocal Routing "e! 0

RC Routing Context

R" Routing "e!

NT5 (AS-INACTI8E) (RCn)

AS& ACTI8E (RCn)

NT5 not sent

if I&S&-I&S&

Read0 to ecei*eAS& Sate "gt "sg


37/91



Si#TranSi#Tran'lcatel()ucent ',060 Solution'lcatel()ucent ',060 Solution


38/91



S"TRA$ Solution 4or Atriu) A5060 %S

"ntroduction o4 S"TRA$ on a ual Rac1 Atriu) %S

Sigtran Tra44ic &igration &Ps

+na.ling Sigtran n ual Rac1 Sste) 'IP700=7=26?RMNNA3

Tra44ic &igration


39/91



A5060 S"TRA$ Iardare8So4tare Architecture ual Rac13

$CT'

0'

AC

%-72 %-79

T'2

T':

4 7:;T: (T A 9>A 9>A

$0 $0

GE - Giga4it EthenetSCC5 - Se*ice Specific Coodination 5unctionSSC& - Se*ice Specific Connection iented &otocol"AC - "edia Access Contol addess

4 7:;T: (T


40/91



A=9>9 SIGTRAN AT'9 or T'9b

aughter Card @ 9

aughter Card @ 2

aughter Card @ :

T'2

T':

$$C;$$C1'

AA85;AT


41/91





42/91



ALU A=9>9 SIGTRAN Solution - Configuation

SCT& End &oints

&S&

"%UA AS

"%UA Route

SIGTRAN Configuation SCT& End &oint


43/91



SIGTRAN $ Configuation $ SCT& End &oint

SI" Node I2

SCT& &ot

&ima0 LocalAddess Seconda0 Local

Addess

Use of SCT&End &oint

SCT&Identifie

S G C f % S


44/91



SIGTRAN $ Configuation $ "%UA &S&

SIGTRAN $ Configuation $ "%UA AS (Local)


45/91



SIGTRAN Configuation "%UA AS (Local)

SIGTRAN $ Configuation $ "%UA AS (Remote)


46/91



SIGTRAN Configuation "%UA AS (Remote)

SIGTRAN $ Configuation $ "%UA Route (Local)


47/91



SIGTRAN Configuation "%UA Route (Local)

SIGTRAN $ Configuation $ "%UA Route (Remote)


48/91



SIGTRAN $ Configuation $ "%UA Route (Remote)


49/91





50/91



T" Net1o. Standad Configuation


51/91





52/91





53/91





54/91



T" Net1o. Standad Configuation $ "%UA &S&s

&S& Id Cad:

=,2,',? '5

5,6,7,@ '6

T#6 S0stem!-

The Standard Sigtran %on4iguration shouldhave @ "%UA &S&s: %hec1 that there are onl@ entiesin Sg1"%ua&S&Configta.leSS7%on4iguration E3:

Keri4 that the 4olloing standard

con4iguration -

2ual Rac. S0stem!-

The Standard Sigtran %on4iguration shouldhave @ "%UA &S&s: %hec1 that there are onl@ entiesin Sg1"%ua&S&Configta.leSS7%on4iguration E3:

Keri4 the 4olloing standard con4iguration -

&S& Id Cad:

=,2 '

',? ?

5,6 5

7,@ 6


55/91



T" Net1o. Standad Configuation $ "%UA AS

T#6 S0stem o 2ual Rac. S0stem (Afte Taffic "igation) !-

Local AS


56/91



T" Net1o. Standad Configuation $ "%UA Route

T#6 S0stem o 2ual Rac. S0stem (Afte Taffic "igation) !-

Local Route


57/91




SIGTRAN 6&Is $ SCT&

SIGTRAN 6&Is $ "%UA


58/91



STARTT"&+STA&P

STPT"&+STA&P

SS$+$!&

AT+A$

S%TP"$"TT $o o4 S%TP - "$"T )essages trans)itted

S%TP"$"TR $o o4 S%TP - "$"T )essages received

S%TP"$"TA%(T $o o4 S%TP - "$"T-A%( )essages trans)itted

S%TP"$"TA%(R $o o4 S%TP - "$"T-A%( )essages received

S%TPSI!T$T $o o4 S%TP SI!T$ )essages trans)itted

S%TPSI!T$R $o o4 S%TP SI!T$ )essages received

S%TPATAT $o o4 S%TP ATA )essages trans)itted S%TPATAR $o o4 S%TP ATA )essages received

S%TP%TT $o o4 %T+TS trans)itted

S%TP%TR $o o4 %T+TS received

SIGTRAN 6&Is - SCT&


59/91



SIGTRAN 6&Is - SCT&SCT&INITT/ ' R/ ! No of SCT& INIT Chun.s Tansmitted H Recei*ed

SCT&INITAC6T/ ' R/ ! No of SCT& INITAc. Chun.s Tansmitted H Recei*ed

SCT&S


60/91



SIGTRAN 6&Is - SCT&

C


61/91



( )

$tatistics


62/91



$tatistics


63/91



SIGTRAN 6&Is SCT& (6enel Stats)

$tatistics


64/91



S G N s SC ( e el Stats)

$tatistics


65/91




SIGTRAN 6&Is $ SCT&

SIGTRAN 6&Is $ "%UA

SIGTRAN 6&Is $ "%UA


66/91



SS"%UA&S&&ER5!

STARTT"&+STA&P ate and ti)e er4or)ance interval started:

STPT"&+STA&Pate and ti)e er4or)ance interval stoed:

SS$+$!& SS $ode S"& %ard3 to hich this record alies

AT+A$ atea ill alas have a value o4 U=

PSP" Peer Server Process ":

S%TSAP" !ser SAP " !SAP id3

&'!AASS%%$T $u).er o4 PSP congestion )essages trans)itted:

&'!AASS%%$R $u).er o4 PSP congestion )essages received:

&'!AASS%TPT $u).er o4 trans4er rohi.ited )essages trans)itted:

&'!AASS%TPR $u).er o4 trans4er rohi.ited )essages received:

&'!AASS%TRT $u).er o4 trans4er restrict )essages trans)itted:

&'!AASS%TRR $u).er o4 trans4er restricted )essages received:

&'!AASS%TRAT $u).er o4 trans4er alloed )essages trans)itted:

&'!AASS%TRAR $u).er o4 trans4er alloed )essages received:

&'!AASS%T%T $u).er o4 trans4er controlled )essages trans)itted:

&'!AASS%T%R $u).er o4 trans4er controlled )essages received:

ASP!P&ST $u).er o4 ASP !P )essages sent

ASP!P&SR $u).er o4 ASP !P )essages received

ASP!PA%(&ST $u).er o4 ASP !P A%( )essages sent

ASP!PA%(&SR $u).er o4 ASP !P A%( )essages received

ASP$&ST $u).er o4 ASP $ )essages sent

ASP$&SR $u).er o4 ASP $ )essages received

ASP$A%(&ST $u).er o4 ASP $ A%( )essages sent

ASP$A%(&SR $u).er o4 ASP $ A%( )essages received

ASPA%&ST $u).er o4 ASP A%T"K+ )essages sent

ASPA%&SR $u).er o4 ASP A%T"K+ )essages received

ASPA%A%(&ST $u).er o4 ASP A%T"K+ A%( )essages sent

ASPA%A%(&SR $u).er o4 ASP A%T"K+ A%( )essages received

SIGTRAN 6&Is $ "%UA


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Ta.le SPAT"AL:SS&'!APSPP+R


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"%UAASSCCNGT! No+ of "%UA ASSCIATIN CNGESTIN Tansmitted+

2esciption! This eg count rovides details o4 %$+ST"$ .eing reorted . the seci4ied PSP:

Repoted ,0 ! S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

"%UAASSCCNGR! No+ of "%UA ASSCIATIN CNGESTIN Recei*ed+

2esciption! This eg count rovides details o4 %$+ST"$ .eing reorted . re)ote STP-Snode: The %$+ST"$ is reorted . &'!A &essage Te Q S%$ ith non-9ero value 4or

congestion level:

Repoted ,0 !S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

"%UAASSCT&T ! No+ of Taffic &ohi4ited "essages Tansmitted+

2esciption ! This eg count rovides no: o4 !$A 2estination UNAvaila.le3 trans)itted . %S:2UNA message is used 40 SG& to declae Una*aila4ilit0 of a gi*en 2estination+5o T"configuation (AS& $ SG&)3 WCS 1ill not tansmit 2UNA messages+


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"%UAASSCTRT ! No+ of Taffic Resticted "essages Tansmitted

2esciption ! This eg count rovides no: o4 RST 2estination ReSTricted3 )essages trans)itted. %S: 2RST message is used 40 SG& node to declae esticted taffic to1ads an0 gi*endestination+ 5o T" configuation (AS& $ SG&)3 WCS does not tansmit 2RST messages+


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AS&U&"SGT ! Num4e of AS& U& messages sent

2esciption !This eg count indicates no: o4 ASP!P )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to re)ote STP-S node: The ASP!P )essage is used during activation

rocedure 4or each Association PSP3:Repoted ,0 !S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

AS&U&"SGR ! Num4e of AS& U& messages ecei*ed

2esciption ! This eg count indicates no: o4 ASP!P )essages received 4or the seci4ied AssociationPSP3 4ro) STP-S node to %S: ASP!P )essages is used during activation rocedure 4or each

Association PSP3:


AS&U&AC6"SGT ! Num4e of AS& U& AC6 messages sent

2esciption !This eg count indicates no: o4 ASP!P-A%( )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP!P-Ac1 )essage is used during activation

rocedure 4or each Association PSP3:


AS&U&AC6"SGR ! Num4e of AS& U& AC6 messages ecei*ed

2esciption !This eg count indicates no: o4 ASP!P-A%( )essages received 4or the seci4iedAssociation PSP3 4ro) STP-S node to %S: The ASP!P-A%( )essage is used during activation

rocedure 4or each Association PSP3:


SIGTRAN 6&Is $ "%UA


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AS&2N"SGT ! Num4e of AS& 2WN messages sent

2esciption !This eg count indicates no: o4 ASP $ )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP $ )essage is used hile Association PSP3

is going don:Repoted ,0 !S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

AS&2N"SGR ! Num4e of AS& 2WN messages ecei*ed

2esciption !This eg count indicates no: o4 ASP $ )essages received 4or the seci4iedAssociation PSP3 4ro) STP-S node to %S: The ASP $ )essage is used hile Association PSP3

is going don:


AS&2NAC6"SGT ! Num4e of AS& 2WN AC6 messages sent

2esciption !This eg count indicates no: o4 ASP$-A%( )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP$-A%( )essage is used hile Association

PSP3 is going don:


AS&2NAC6"SGR ! Num4e of AS& 2WN AC6 messages ecei*ed

2esciption !This eg count indicates no: o4 ASP$-A%( )essages received 4or the seci4iedAssociation PSP3 4ro) STP-S node to %S: The ASP$-A%( )essage is used hile Association

PSP3 is going don:


SIGTRAN 6&Is $ "%UA


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AS&AC"SGT ! Num4e of AS& ACTI8E messages sent

2esciption !This eg count indicates no: o4 ASP A%T"K+ )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP A%T"K+ )essage is used to indicate the re)ote

eer &'!A that the seci4ied Association PSP3 is read to handle tra44ic:Repoted ,0 !S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

AS&AC"SGR ! Num4e of AS& ACTI8E messages ecei*ed

2esciption !This eg count indicates no: o4 ASP A%T"K+ )essages received 4or the seci4iedAssociation PSP3 4ro) STP-S node to %S: The ASP A%T"K+ )essage is used to indicate the re)ote

eer &'!A that the seci4ied Association PSP3 is read to handle tra44ic:


AS&ACAC6"SGT ! Num4e of AS& ACTI8E AC6 messages sent

2esciption !This eg count indicates no: o4 ASPA%T"K+-A%( )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASPA%T"K+-A%( )essage is used to ac1noledge

ASP A%T"K+ )essage received 4ro) re)ote &'!A eer:


AS&ACAC6"SGR ! Num4e of AS& ACTI8E AC6 messages ecei*ed

2esciption !This eg count indicates no: o4 ASPA%T"K+-A%( )essages received 4or the seci4iedAssociation PSP3 4ro) STP-S node to %S: The ASPA%T"K+-A%( )essage is used to ac1noledge

ASP A%T"K+ )essage received 4ro) re)ote &'!A eer:


SIGTRAN 6&Is $ "%UA


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AS&INAC"SGT ! Num4e of AS& INACTI8E messages sent

2esciption !This eg count indicates no: o4 ASP "$A%T"K+ )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP "$A%T"K+ )essage is used to indicate the

re)ote eer &'!A that the seci4ied Association PSP3 is unavaila.le to handle tra44ic:Repoted ,0 !S"&8& $ode Running Sg&t' rocess ith &aster &'!A:

AS&INAC"SGR ! Num4e of AS& INACTI8E messages ecei*ed

2esciption !This eg count indicates no: o4 ASP "$A%T"K+ )essages received 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP A%T"K+ )essage is used to indicate the re)ote

eer &'!A that the seci4ied Association PSP3 is read to handle tra44ic:


AS&INACAC6"SGT ! Num4e of AS& INACTI8E AC6 messages sent

2esciption !This eg count indicates no: o4 ASP "$A%T"K+ A%( )essages trans)itted 4or theseci4ied Association PSP3 4ro) %S to STP-S node: The ASP "$A%T"K+ A%( )essage is used to

ac1noledge an ASP "$A%T"K+ )essage received 4ro) a re)ote &'!A eer:


AS&INACAC6"SGR ! Num4e of AS& INACTI8E AC6 messages ecei*ed

2esciption !This eg count indicates no: o4 ASP A%T"K+ )essages trans)itted 4or the seci4iedAssociation PSP3 4ro) %S to STP-S node: The ASP "$A%T"K+ A%( )essage is used to ac1noledge

an ASP "$A%T"K+ )essage received 4ro) a re)ote &'!A eer:


SIGTRAN 6&Is $ "%UA


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"%UAASSCUNA8 ! Num4e of times Association 1as una*aila4le

2esciption !This eg count indicates no: o4 ti)es the seci4ied Association PSP3 .eca)e

unavaila.le during the reorting interval:


"%UAASSCUNA82UR ! 2uation of Association una*aila4ilit0 (in seconds)

2esciption !This eg count indicates duration in seconds3 the seci4ied Association PSP3 asunavaila.le:


"%UAASSC,TET ! ,0te count of &2U(s) sent on the association

2esciption !This eg count indicates total no: o4 .tes trans)itted on the seci4ied AssociationPSP3 4ro) %S:

Repoted ,0 !+ach S"&8& $ode Running Sg&t' rocess:

"%UAASSC,TER ! ,0te count of &2U(s) ecei*ed on the association2esciption !This eg count indicates total no: o4 .tes received on the seci4ied Association PSP3. %S:

Repoted ,0 !+ach S"&8& $ode Running Sg&t' rocess:

SIGTRAN 6&Is $ "%UA


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"%UAASSC&2UT ! Num4e of &2U(s) sent on the association

2esciption !This eg count indicates no: o4 &'!A P!s &essage Te - ATA3 trans)itted on the

seci4ied Association PSP3 4ro) %S:


"%UAASSC&2UR ! Num4e of &2U(s) ecei*ed on the association

2esciption !This eg count indicates no: o4 &'!A P!s &essage Te ATA3 received on theseci4ied Association PSP3 . %S:


"%UAASSCCNGN,R ! Num4e of association congestion occuence

2esciption !This eg count indicates no: o4 ti)es congestion haened on the seci4iedAssociation PSP3:


"%UAASSCCNG2UR ! 2uation of association congestion (in seconds)2esciption !This eg count indicates duration o4 congestion haened on the seci4ied AssociationPSP3:


SIGTRAN 6&Is $ "%UA


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C


77/91




SIGTRAN Alams H E*ents - SCT&

SIGTRAN Alams H E*ents $ "%UA

SIGTRAN Alams ' E*ents


78/91



SIGTRAN Alams ' E*ents

Microsoft E!cel(orksheet


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2IAGNSTIC

2IAGNSTIC


80/91


%0 Introduction to Si Tran


81/91



(T#6) "%UA &S& Info W s"d W su"d W sAssoc"d W assocSt W asSt W inhi.ited W n).ActPs W n).RegPs W cong/ W congActive W n).Ps W as)Te W retr%ount W outStrea)s W

W = W 0 W 0 W A%T"K+ W A%T"K+ W


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(2ual Rac.) "%UA &S& Info W s"d W su"d W sAssoc"d W assocSt W asSt W inhi.ited W n).ActPs W n).RegPs W cong/ W congActive W n).Ps W as)Te W retr%ount W outStrea)s W

W = W 0 W 0 W A%T"K+ W A%T"K+ W


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&'!A PS "n4o

W s"d W n1"d W state W s)c W congLevel W end&sgs W

W = W 6 W A%T"K+ W ='@@2'2' W 0 W 0 W

W 2 W 6 W A%T"K+ W =2?'?620 W 0 W 0 W

W ' W 6 W A%T"K+ W 657202 W 0 W 0 W

here

state is the current oerational state o4 &'!A PS and corresonding &'!A Route:

The valid values are - F!$($$GX F$GX F"$A%T"K+GX FA%T"K+GX FP+$"$G

spmc is the &'!A Route deci)al value o4 P%3 associated ith &'!A PS:

congLe*el is the current congestion level reorted . STP-S 4or the &'!A Route

pend"sgs is no: o4 &'!A ATA )essages currentl ending to .e delivered:

!nder nor)al conditions, this count should .e U0:


84/91




Tou4leshooting

(no "ssues


85/91



(no "ssues

S"&T"D A4ter S"& $ode Restart, the Associations " $T Recover:

Coesponding Eo LogsD ct 2? ='D=5D22 K&SS@6=si)=?= ssLogD ;" ='262? local0:de.ug>

='D=5D22:'25 S"&00? SgSct"3 ::8%)Ssrv"nt:c@703 +RRR - Stac1+rrorDentD ='6 instD 000 roc idD 007 4ileD ::8s.accetor:c lineD 26' errcodeD00000 errclsD +RR%LS+E! errvalD 005=5 errdescD s.accetthrD Peel o444ailed

RESLUTIND Loc1 8 !nloc1 Associations

(no "ssues


86/91



(no "ssues

S"&T"D A4ter S"& $ode Restart, the Associations " $T Recover:

Coesponding Eo LogsD ec == ==D06D0' Sust@sa)=5= ssLogD ;" =2'6 local0:de.ug>

==D06D0':502 S"&02' SgSct"3 ::8%)Ssrv"nt:c@7=3 +RRR - Stac1+rrorDentD ='6 instD 000 roc idD 00@ 4ileD ::8s.osi4:c lineD 277 errcodeD 00000errclsD +RR%LS+E! errvalD 00000 errdescD S."net%onnectD%onnect


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(no "ssues

S"&T"D A4ter S"& $ode Restart, the Associations " $T Recover: %S$ot Resonding to Association "nitiali9ation 4ro) re)ote node STP-S3:

Trou.leshooting S%TP Association


88/91


%% Introduction to Si Tran


89/91



N8"SS9JsimJ:J%9J: SI"9%=!K snoop -d 4ge# sctp

!sing device 8dev8.ge2 ro)iscuous )ode3

=0:=62:=@':' -V =0:=77:'?:26 S%TP Q205 SQ205 "$"T=0:=62:=@':' -V =0:=77:'?:26 S%TP Q205 SQ205 "$"T

=0:=62:=@':' -V =0:=77:'?:26 S%TP Q205 SQ205 "$"T

=0:=62:=@':' -V =0:=77:'5:26 S%TP Q205 SQ205 "$"T

"s

"$"T"$"T-A%(

(B

A

+ngage T& tea) to investigate

I Association "nitiali9ation "S $T (B

netstat $a gep ESTA,LIS


90/91



Re4erences

httD88r4c:net8r4c2=0:ht)lD

Strea) %ontrol Trans)ission Protocol, cto.er 2000 httD88r4c:net8r4c'''=:ht)lD

Signaling Sste) 7 SS73 &essage Trans4er Part 2 &TP23 - !ser AdatationLaer , Sete).er 2002

httD88r4c:net8r4c?666:ht)lD

Signaling Sste) 7 SS73 &essage Trans4er Part ' &TP'3 - !ser AdatationLaer &'!A3, Sete).er 2006
http://rfc.net/rfc2190.htmlhttp://rfc.net/rfc3331.htmlhttp://rfc.net/rfc4666.htmlhttp://rfc.net/rfc4666.htmlhttp://rfc.net/rfc3331.htmlhttp://rfc.net/rfc2190.html


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Than1 ou Z:alcatel-lucent:co)

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