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Example: bgp l3evpns change in metric

Alt text

r1

hostname r1
vrf def v1
 rd 1:1
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 exit
vrf def v4
 rd 1:4
 rt-both 1:4
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.1 255.255.255.255
 ipv6 addr 4321::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v2
 ipv4 addr 9.9.2.1 255.255.255.255
 ipv6 addr 9992::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo3
 vrf for v3
 ipv4 addr 9.9.3.1 255.255.255.255
 ipv6 addr 9993::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo4
 vrf for v4
 ipv4 addr 9.9.4.1 255.255.255.255
 ipv6 addr 9994::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.1 255.255.255.0
 ipv6 addr 1234:1::1 ffff:ffff::
 mpls enable
 exit
router bgp4 1
 vrf v1
 address evpn
 local-as 1
 router-id 4.4.4.1
 neigh 1.1.1.2 remote-as 1
 neigh 1.1.1.2 route-reflect
 neigh 1.1.1.2 send-comm both
 neigh 1.1.1.3 remote-as 1
 neigh 1.1.1.3 route-reflect
 neigh 1.1.1.3 send-comm both
 neigh 1.1.1.4 remote-as 1
 neigh 1.1.1.4 route-reflect
 neigh 1.1.1.4 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit
router bgp6 1
 vrf v1
 address evpn
 local-as 1
 router-id 6.6.6.1
 neigh 1234:1::2 remote-as 1
 neigh 1234:1::2 route-reflect
 neigh 1234:1::2 send-comm both
 neigh 1234:1::3 remote-as 1
 neigh 1234:1::3 route-reflect
 neigh 1234:1::3 send-comm both
 neigh 1234:1::4 remote-as 1
 neigh 1234:1::4 route-reflect
 neigh 1234:1::4 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit

r2

hostname r2
vrf def v1
 rd 1:1
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 exit
vrf def v4
 rd 1:4
 rt-both 1:4
 exit
bridge 1
 mac-learn
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.2 255.255.255.255
 ipv6 addr 4321::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v2
 ipv4 addr 9.9.2.2 255.255.255.255
 ipv6 addr 9992::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo3
 vrf for v3
 ipv4 addr 9.9.3.2 255.255.255.255
 ipv6 addr 9993::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo4
 vrf for v4
 ipv4 addr 9.9.4.2 255.255.255.255
 ipv6 addr 9994::2 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 bridge-gr 1
 exit
int eth2
 bridge-gr 1
 exit
int bvi1
 vrf for v1
 ipv4 addr 1.1.1.2 255.255.255.0
 ipv6 addr 1234:1::2 ffff:ffff::
 mpls enable
 exit
route-map rm1
 sequence 10 act deny
 sequence 10 match metric 4000-6000
 sequence 20 act perm
 exit
router bgp4 1
 vrf v1
 address evpn
 local-as 1
 router-id 4.4.4.2
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 send-comm both
 neigh 1.1.1.1 evpn-route-map-in rm1
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit
router bgp6 1
 vrf v1
 address evpn
 local-as 1
 router-id 6.6.6.2
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 send-comm both
 neigh 1234:1::1 evpn-route-map-in rm1
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit

r3

hostname r3
vrf def v1
 rd 1:1
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 exit
vrf def v4
 rd 1:4
 rt-both 1:4
 exit
bridge 1
 mac-learn
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.3 255.255.255.255
 ipv6 addr 4321::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v2
 ipv4 addr 9.9.2.3 255.255.255.255
 ipv6 addr 9992::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo3
 vrf for v3
 ipv4 addr 9.9.3.3 255.255.255.255
 ipv6 addr 9993::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo4
 vrf for v4
 ipv4 addr 9.9.4.3 255.255.255.255
 ipv6 addr 9994::3 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 bridge-gr 1
 exit
int eth2
 bridge-gr 1
 exit
int bvi1
 vrf for v1
 ipv4 addr 1.1.1.3 255.255.255.0
 ipv6 addr 1234:1::3 ffff:ffff::
 mpls enable
 exit
route-map rm1
 set metric 1000
 exit
router bgp4 1
 vrf v1
 address evpn
 local-as 1
 router-id 4.4.4.3
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn route-map rm1
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit
router bgp6 1
 vrf v1
 address evpn
 local-as 1
 router-id 6.6.6.3
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn route-map rm1
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit

r4

hostname r4
vrf def v1
 rd 1:1
 exit
vrf def v2
 rd 1:2
 rt-both 1:2
 exit
vrf def v3
 rd 1:3
 rt-both 1:3
 exit
vrf def v4
 rd 1:4
 rt-both 1:4
 exit
int lo0
 vrf for v1
 ipv4 addr 2.2.2.4 255.255.255.255
 ipv6 addr 4321::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo2
 vrf for v2
 ipv4 addr 9.9.2.4 255.255.255.255
 ipv6 addr 9992::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo3
 vrf for v3
 ipv4 addr 9.9.3.4 255.255.255.255
 ipv6 addr 9993::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int lo4
 vrf for v4
 ipv4 addr 9.9.4.4 255.255.255.255
 ipv6 addr 9994::4 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
 exit
int eth1
 vrf for v1
 ipv4 addr 1.1.1.4 255.255.255.0
 ipv6 addr 1234:1::4 ffff:ffff::
 mpls enable
 exit
route-map rm1
 sequence 10 act deny
 sequence 10 match metric 2000-4000
 sequence 20 act perm
 exit
router bgp4 1
 vrf v1
 address evpn
 local-as 1
 router-id 4.4.4.4
 neigh 1.1.1.1 remote-as 1
 neigh 1.1.1.1 evpn-route-map-in rm1
 neigh 1.1.1.1 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit
router bgp6 1
 vrf v1
 address evpn
 local-as 1
 router-id 6.6.6.4
 neigh 1234:1::1 remote-as 1
 neigh 1234:1::1 evpn-route-map-in rm1
 neigh 1234:1::1 send-comm both
 afi-vrf v2 ena
 afi-vrf v2 red conn
 afi-vrf v2 import evpn
 afi-vrf v2 export evpn
 afi-vrf v3 ena
 afi-vrf v3 red conn
 afi-vrf v3 import evpn
 afi-vrf v3 export evpn
 afi-vrf v4 ena
 afi-vrf v4 red conn
 afi-vrf v4 import evpn
 afi-vrf v4 export evpn
 exit

r1 tping 100 60 9.9.4.2 vrf v4
r1 tping 100 60 9994::2 vrf v4
r1 tping 100 60 9.9.4.3 vrf v4
r1 tping 100 60 9994::3 vrf v4
r1 tping 100 60 9.9.4.4 vrf v4
r1 tping 100 60 9994::4 vrf v4
r2 tping 100 60 9.9.4.1 vrf v4
r2 tping 100 60 9994::1 vrf v4
r2 tping 100 60 9.9.4.3 vrf v4
r2 tping 100 60 9994::3 vrf v4
r2 tping 100 60 9.9.4.4 vrf v4
r2 tping 100 60 9994::4 vrf v4
r3 tping 100 60 9.9.4.1 vrf v4
r3 tping 100 60 9994::1 vrf v4
r3 tping 100 60 9.9.4.2 vrf v4
r3 tping 100 60 9994::2 vrf v4
r3 tping 100 60 9.9.4.4 vrf v4
r3 tping 100 60 9994::4 vrf v4
r4 tping 100 60 9.9.4.1 vrf v4
r4 tping 100 60 9994::1 vrf v4
r4 tping 100 60 9.9.4.2 vrf v4
r4 tping 100 60 9994::2 vrf v4
r4 tping 100 60 9.9.4.3 vrf v4
r4 tping 100 60 9994::3 vrf v4
r3 send conf t
r3 send route-map rm1
r3 send set metric 3000
r3 send end
r3 send clear ipv4 route v4
r3 send clear ipv6 route v4
r1 tping 100 60 9.9.4.2 vrf v4
r1 tping 100 60 9994::2 vrf v4
r1 tping 100 60 9.9.4.3 vrf v4
r1 tping 100 60 9994::3 vrf v4
r1 tping 100 60 9.9.4.4 vrf v4
r1 tping 100 60 9994::4 vrf v4
r2 tping 100 60 9.9.4.1 vrf v4
r2 tping 100 60 9994::1 vrf v4
r2 tping 100 60 9.9.4.3 vrf v4
r2 tping 100 60 9994::3 vrf v4
r2 tping 100 60 9.9.4.4 vrf v4
r2 tping 100 60 9994::4 vrf v4
r3 tping 100 60 9.9.4.1 vrf v4
r3 tping 100 60 9994::1 vrf v4
r3 tping 100 60 9.9.4.2 vrf v4
r3 tping 100 60 9994::2 vrf v4
r3 tping 0 60 9.9.4.4 vrf v4
r3 tping 0 60 9994::4 vrf v4
r4 tping 100 60 9.9.4.1 vrf v4
r4 tping 100 60 9994::1 vrf v4
r4 tping 100 60 9.9.4.2 vrf v4
r4 tping 100 60 9994::2 vrf v4
r4 tping 0 60 9.9.4.3 vrf v4
r4 tping 0 60 9994::3 vrf v4
r3 send conf t
r3 send route-map rm1
r3 send set metric 5000
r3 send end
r3 send clear ipv4 route v4
r3 send clear ipv6 route v4
r1 tping 100 60 9.9.4.2 vrf v4
r1 tping 100 60 9994::2 vrf v4
r1 tping 100 60 9.9.4.3 vrf v4
r1 tping 100 60 9994::3 vrf v4
r1 tping 100 60 9.9.4.4 vrf v4
r1 tping 100 60 9994::4 vrf v4
r2 tping 100 60 9.9.4.1 vrf v4
r2 tping 100 60 9994::1 vrf v4
r2 tping 0 60 9.9.4.3 vrf v4
r2 tping 0 60 9994::3 vrf v4
r2 tping 100 60 9.9.4.4 vrf v4
r2 tping 100 60 9994::4 vrf v4
r3 tping 100 60 9.9.4.1 vrf v4
r3 tping 100 60 9994::1 vrf v4
r3 tping 0 60 9.9.4.2 vrf v4
r3 tping 0 60 9994::2 vrf v4
r3 tping 100 60 9.9.4.4 vrf v4
r3 tping 100 60 9994::4 vrf v4
r4 tping 100 60 9.9.4.1 vrf v4
r4 tping 100 60 9994::1 vrf v4
r4 tping 100 60 9.9.4.2 vrf v4
r4 tping 100 60 9994::2 vrf v4
r4 tping 100 60 9.9.4.3 vrf v4
r4 tping 100 60 9994::3 vrf v4
r3 send conf t
r3 send route-map rm1
r3 send set metric 1000
r3 send end
r3 send clear ipv4 route v4
r3 send clear ipv6 route v4
r1 tping 100 60 9.9.4.2 vrf v4
r1 tping 100 60 9994::2 vrf v4
r1 tping 100 60 9.9.4.3 vrf v4
r1 tping 100 60 9994::3 vrf v4
r1 tping 100 60 9.9.4.4 vrf v4
r1 tping 100 60 9994::4 vrf v4
r2 tping 100 60 9.9.4.1 vrf v4
r2 tping 100 60 9994::1 vrf v4
r2 tping 100 60 9.9.4.3 vrf v4
r2 tping 100 60 9994::3 vrf v4
r2 tping 100 60 9.9.4.4 vrf v4
r2 tping 100 60 9994::4 vrf v4
r3 tping 100 60 9.9.4.1 vrf v4
r3 tping 100 60 9994::1 vrf v4
r3 tping 100 60 9.9.4.2 vrf v4
r3 tping 100 60 9994::2 vrf v4
r3 tping 100 60 9.9.4.4 vrf v4
r3 tping 100 60 9994::4 vrf v4
r4 tping 100 60 9.9.4.1 vrf v4
r4 tping 100 60 9994::1 vrf v4
r4 tping 100 60 9.9.4.2 vrf v4
r4 tping 100 60 9994::2 vrf v4
r4 tping 100 60 9.9.4.3 vrf v4
r4 tping 100 60 9994::3 vrf v4
  1. Install ContainerLab as described here
  2. Fetch rout-bgp818 file
  3. Launch ContainerLab rout-bgp818.yml topology: 

   containerlab deploy --topo rout-bgp818.yml
4. Destroy ContainerLab rout-bgp818.yml topology: 

   containerlab destroy --topo rout-bgp818.yml
5. Copy-paste configuration for each node in the lab topology

  1. Fetch or compile freeRtr rtr.jar file.
    You can grab it here
  2. Fetch rout-bgp818.tst file here
  3. Launch rout-bgp818.tst test: 

   java -jar ../../rtr.jar test tester rout-bgp818 path ./ temp ./ wait
4. Destroy freeRtr rout-bgp818.tst test: 

   Ctrl-C (In freeRtr test window)