XR config for simple ISIS topology

docker-commands

Start three XR routers:
kll@htpc:~$ docker run --privileged -i -t -d --name xr1 vr-xrv:6.0.1
1d520dde91768a6dc2ee24873f46e3045b2c805e322d3556288080be9a9f6165
kll@htpc:~$ docker run --privileged -i -t -d --name xr2 vr-xrv:6.0.1
15a26c2ea190bd02df952ab90271b865811a1fdbcf9b4626da868297e9f0214f
kll@htpc:~$ docker run --privileged -i -t -d --name xr3 vr-xrv:6.0.1
059ea393bbc90c79c51cba79fa3f1c1dbc4e4dedbddf742f1f92400c6407847e
kll@htpc:~$

Connect them together, the first interface on xr1 goes to the first interface
on xr2 and the second interface on xr1 goes to xr3:
kll@htpc:~$ docker run --privileged -i -t -d --link xr1 --link xr2 --link xr3 vr-xcon --p2p xr1/1--xr2/1 xr1/2--xr3/1
21d81d1155a7bd3940c7e169d223ad4604a646e0ec779e43f93882d9371d0f3a

Log in to the routers over the virtual serial interface by telnet to port 5000

xr1-config.txt

hostname xr1
interface GigabitEthernet0/0/0/0
 description link to xr2 [GigabitEthernet0/0/0/0]
 ipv4 address 192.168.1.1 255.255.255.252
!
interface GigabitEthernet0/0/0/1
 description link to xr3 [GigabitEthernet0/0/0/0]
 ipv4 address 192.168.2.1 255.255.255.252
!
router isis 1
 net 47.0000.0000.0001.00
 address-family ipv4 unicast
 !
 interface GigabitEthernet0/0/0/0
  address-family ipv4 unicast
  !
 !
 interface GigabitEthernet0/0/0/1
  address-family ipv4 unicast
  !
 !
!

xr1-show-isis-neighbors

RP/0/0/CPU0:xr1#sh isis neighbors
Fri Dec 23 15:08:27.072 UTC

IS-IS 1 neighbors:
System Id      Interface        SNPA           State Holdtime Type IETF-NSF
xr2            Gi0/0/0/0        5254.009b.df01 Up    8        L1L2 Capable
xr3            Gi0/0/0/1        5254.0075.d401 Up    26       L1L2 Capable

Total neighbor count: 2
RP/0/0/CPU0:xr1#

xr2-config.txt

hostname xr2
interface GigabitEthernet0/0/0/0
 description link to xr1 [GigabitEthernet0/0/0/0]
 ipv4 address 192.168.1.2 255.255.255.252
!
router isis 1
 net 47.0000.0000.0002.00
 address-family ipv4 unicast
 !
 interface GigabitEthernet0/0/0/0
  address-family ipv4 unicast
  !
 !
!

xr3-config.txt

hostname xr3
interface GigabitEthernet0/0/0/0
 description link to xr1 [GigabitEthernet0/0/0/1]
 ipv4 address 192.168.2.2 255.255.255.252
!
router isis 1
 net 47.0000.0000.0003.00
 address-family ipv4 unicast
 !
 interface GigabitEthernet0/0/0/0
  address-family ipv4 unicast
  !
 !
!