Trellis Tutorial CORD Build 2017 · 2020. 8. 14. · Port -Subnet Two information can be derived from the subnet config: (1) The interface IP on the switch is 10.0.3.254 (2) The subnet

TrellisTutorialAnOpen-Source,White-Box,SDNBasedLeaf-SpineNetworkFabric

CharlesChanOpenNetworkingFoundation

TrellisMulti-purposeleaf-spinefabricdesignedforNFV

WhiteBoxHardware

OpenSourceSoftware

SDNBased

DualHoming

RoutingBridging

vRouter IPv6

VLAN L3DHCPRelay

andmore…

TrellisFeatures

MininetONOSQuagga

&BGP

DHCPServer

Prerequisite

DemoTopology

Q:Quagga,R:UpstreamRouter,D:DHCPServer

Q

R

D

of:226 of:227

of:204 of:205

h1 h2h3

rh1

10.0.2.1VLAN None

10.0.2.2VLAN 20 10.0.3.1

VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.99.210.0.99.1

10.0.2.254 10.0.2.254 10.0.3.25410.0.4.254

10.0.1.254

3 43

4 56

10.0.4.1VLAN None

h4

Device

{"devices" : {

"of:0000000000000204" : {“segmentrouting” : {

"name" : "s204","ipv4NodeSid" : 204,"ipv4Loopback" : "192.168.0.204","routerMac" : "00:00:00:00:02:04","isEdgeRouter" : true,"adjacencySids" : []

},"basic" : {

"name": "s204","driver" : "ofdpa-ovs”

}}

}

DataPathID(DPID)oftheswitch

Device

{"devices" : {



},"basic" : {


}}

}

Unused.Thisnamedoesn’treallymatter.Willbedeprecated.

Device

{"devices" : {



},"basic" : {


}}

}

SegmentID.Canbeanarbitraryvaluebutneedtobeuniqueinthesystem.AlsousedastheMPLSlabelwhendoingsegmentrouting.DonotusereservedMPLSlabels(i.e.<=16).

Device

{"devices" : {



},"basic" : {


}}

}

Loopbackaddressoftheswitch.Canbeanarbitraryvalue(e.g.themanagementIP)butneedtobeuniqueinthesystem.

Device

{"devices" : {



},"basic" : {


}}

}

UseforARPreplywhenhostARPsitsgateway.Canbeanarbitraryvalue(e.g.themanagementMAC)butneedtobeuniqueinthesystem.

Device

{"devices" : {



},"basic" : {


}}

}

Trueforleaves.Falseforspines.

Device

{"devices" : {



},"basic" : {


}}

}

Unused.Willbedeprecated.

Device

{"devices" : {



},"basic" : {


}}

}

Thisisthenamethatdoesmatter.WillbedisplayedinGUI

Device

{"devices" : {



},"basic" : {


}}

}

Driver.ofdpa-ovs forOpenvSwitch.ofdpa3 forBroadcomXGS(Trident2,Tomahawk)qmx-ofdpa3 forBroadcomQMX

Port- VLANUntagged

{"ports" : {

"of:0000000000000204/3" : { "interfaces" : [

{"ips" : ["10.0.2.254/24"], "vlan-untagged": 20

}]

}}

}

DPID/portnumber

Equivalenttoaccessport.ExpectinguntaggedpacketandwillpushVLAN20

of:204

h1 h2

10.0.2.1VLAN None

10.0.2.2VLAN 20

10.0.2.254 10.0.2.2543 4

Port- VLANTagged

{"ports" : {

"of:0000000000000204/4" : { "interfaces" : [

{ "ips" : ["10.0.2.254/24"],"vlan-tagged": [20]

}]

}}

}

Equivalenttotrunkport.ExpectingVLAN20taggedpacketandwillkeepthetag.ItispossibletohavemorethanonetrunkVLAN.

of:204

h1 h2

10.0.2.1VLAN None

10.0.2.2VLAN 20

10.0.2.254 10.0.2.2543 4

Port- VLANTaggedwithNative

{"ports" : {

"of:0000000000000205/3" : { "interfaces" : [

{ "ips" : ["10.0.3.254/24", "10.0.4.254/24"]"vlan-tagged" : [30],”vlan-native" : 40

}]

}}

}

EquivalenttotrunkportwithnativeVLAN.ExpectingVLAN30taggedpacketandwillkeepthetag.AlsoexpectinguntaggedpacketandwillpushVLAN40

Q

R

D

of:205

h3

10.0.3.1VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.3.25410.0.4.254

10.0.1.254

34 56

10.0.4.1VLAN None

h4

Port- Subnet

Twoinformationcanbederivedfromthesubnetconfig:(1)TheinterfaceIPontheswitchis10.0.3.254(2)Thesubnetonthisinterfaceis10.0.3.0/24

Currentlywedon’tmapbetweensubnetandVLAN.VLANinformationissolelyusedfordefiningbridgingdomain.Subnetinformationissolelyusedforrouting.Therearesomeconfusions.Willhave1-to-1mappinginthefuture.

{"ports" : {

"of:0000000000000205/3" : { "interfaces" : [

{ "ips" : ["10.0.3.254/24", "10.0.4.254/24"]"vlan-tagged" : [30],”vlan-native" : 40

}]

}}

}

Q

R

D

of:205

h3

10.0.3.1VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.3.25410.0.4.254

10.0.1.254

34 56

10.0.4.1VLAN None

h4

L3DHCPRelay

Q

R

D

L3DHCPRelay

{"apps" : {

"org.onosproject.dhcprelay" : {"default": [

{ "dhcpServerConnectPoint": "of:0000000000000205/6","serverIps": ["10.0.3.253"]

}]

}}

}

ThelocationwheretheDHCPserverisattachedto

L3DHCPRelay

{"apps" : {

"org.onosproject.dhcprelay" : {"default": [

{ "dhcpServerConnectPoint": "of:0000000000000205/6","serverIps": ["10.0.3.253"]

}]

}}

}

TheIPaddressofDHCPserver

dhcpd.conf

subnet 10.0.2.0 netmask 255.255.255.0 {range 10.0.2.100 10.0.2.240;option routers 10.0.2.254;

}


}


}

host h1 {hardware ethernet 00:aa:00:00:00:01;fixed-address 10.0.2.1;

}

Subnetswewanttoassign

dhcpd.conf

IPrangethatwillbeusedforthissubnet


}


}


}


}

dhcpd.conf

Defaultgatewaywewanttoassign,whichistheinterfaceIPoftheleafswitch


}


}


}


}

dhcpd.conf

WecanalsohavestaticIPassignment


}


}


}


}

vRouter

{"ports" : {

"of:0000000000000205/6" : { "interfaces" : [

{ "ips" : ["10.0.1.254/24”]"vlan-untagged": 10

}]

},"of:0000000000000205/7" : {

"interfaces" : [{ "ips" : ["10.0.1.254/24”]"vlan-untagged": 10

}]

}}

}

QuaggaandupstreamrouterneedtobeinthesameVLANandsubnetonthesameleaf.

Weneed3IPsinthesubnet.1forQuagga,1forupstreamrouter,1forleafswitchinterface./29istheminimumsubnet.

• Quaggaannouncesleafswitch,insteadofquaggaitself,asthenexthop totheinternalnetwork

RouteMap

Q

R

10.0.1.254/24

10.0.1.254/24

10.0.1.1/24

10.0.1.2/24

BridgedBGPtraffic

Routeddatatraffic

Quagga- bgpd.conf

ip prefix-list 1 seq 10 permit 10.0.2.0/24ip prefix-list 1 seq 20 permit 10.0.3.0/24

route-map NEXTHOP41 permit 10match ip address prefix-list 1set ip next-hop 10.0.1.254

neighbor 10.0.1.1remote-as 65001neighbor 10.0.1.1 ebgp-multihopneighbor 10.0.1.1 timers connect 5neighbor 10.0.1.1 advertisement-interval 5neighbor 10.0.1.1 route-map NEXTHOP41 out

network 10.0.2.0/24network 10.0.3.0/24

Listofprefixeswewanttoannounce

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

Definetheroutemapanditsname

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

Applytheroutemaptotheprefixesinprefix-list1

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

Settheleafswitch,insteadofQuaggaitself,asthenexthopfortheseprefixes

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

BGPpeerinformation

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

Announcetheroutemaptotheneighbor

Quagga- bgpd.conf




network 10.0.2.0/24network 10.0.3.0/24

NetworksthatarereachablefromQuagga

FPM(ForwardingPlaneManager)

Q

R

D

BGP

FPM

OF

Quagga- zebrad.conf

ip route 0.0.0.0/0 172.16.0.1

fpm connection ip 192.168.56.11 port 2620

(Optional)Pointdefaultroutetomanagementnetwork

FPMconnectiontoONOSIP.NeedtobereachablefromQuagga

DemoTopology


Q

R

D

of:226 of:227

of:204 of:205

h1 h2h3

rh1

h4

VLAN: 30Src mac: h3Dst mac: routerMac of of:205Src IP: h3Dst IP: h1

10.0.2.1VLAN None

10.0.2.2VLAN 20 10.0.3.1

VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.99.210.0.99.1

10.0.2.254 10.0.2.254 10.0.3.25410.0.4.254

10.0.1.254

3 43

4 56

10.0.4.1VLAN None

DemoTopology


Q

R

D

of:226 of:227

of:204 of:205

h1 h2h3

rh1

h4

Src mac: routerMac of of:205Dst mac: routerMac of of:226MPLS label: 204Src IP: h3Dst IP: h1

10.0.2.1VLAN None

10.0.2.2VLAN 20 10.0.3.1

VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.99.210.0.99.1

10.0.2.254 10.0.2.254 10.0.3.25410.0.4.254

10.0.1.254

3 43

4 56

10.0.4.1VLAN None

DemoTopology


Q

R

D

of:226 of:227

of:204 of:205

h1 h2h3

rh1

h4

Src mac: routerMac of of:226Dst mac: routerMac of of:204Src IP: h3Dst IP: h1

10.0.2.1VLAN None

10.0.2.2VLAN 20 10.0.3.1

VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.99.210.0.99.1

10.0.2.254 10.0.2.254 10.0.3.25410.0.4.254

10.0.1.254

3 43

4 56

10.0.4.1VLAN None

DemoTopology


Q

R

D

of:226 of:227

of:204 of:205

h1 h2h3

rh1

h4

Src mac: routerMac of of:204Dst mac: h1Src IP: h3Dst IP: h1

10.0.2.1VLAN None

10.0.2.2VLAN 20 10.0.3.1

VLAN 30

10.0.1.1

10.0.1.2

10.0.3.253

10.0.99.210.0.99.1

10.0.2.254 10.0.2.254 10.0.3.25410.0.4.254

10.0.1.254

3 43

4 56

10.0.4.1VLAN None

DemoScriptsandconfigurationswillbeavailableathttps://github.com/opennetworkinglab/routing/tree/master/trellisafterthisevent

Thankyou!Visithttp://wiki.opencord.orgformoreinformation

Documents

Trellis Tutorial CORD Build 2017 · 2020. 8. 14. · Port -Subnet Two information can be derived from the subnet config: (1) The interface IP on the switch is 10.0.3.254 (2) The subnet