Re: VIRL - ISIS Interconnect between XRv and IOSv

willf0001 · ‎06-07-2016

I'm having trouble establishing an IS-IS adjacency between IOSv and XRv routers in VIRL. I can see the ISIS neighbor from the IOSv box, but not from the XRv box. From what I can tell in the debugs it's as if the XRv box is not receiving the adjacency packets from the IOSv box.

XRv = CR01

IOSv = DR01

This is a simple point to point interconnect with a /31 between the two.

DR01 Gi0/1 <---> CR01 Gi0/0/0/1

============

DR01 Config

============

!

interface GigabitEthernet0/1

description [CR01][Gi0/0/0/1] CORE ROUTER CONNECTION

mtu 9000

ip address 62.159.216.129 255.255.255.254

no ip redirects

no ip proxy-arp

ip router isis 1

duplex auto

speed auto

media-type rj45

isis circuit-type level-2-only

isis network point-to-point

isis hello-interval 1

isis csnp-interval 10

!

router isis 1

net 00.0621.5921.6104.00

is-type level-2-only

ispf level-2

metric-style wide

fast-flood 10

max-lsp-lifetime 65535

lsp-refresh-interval 65000

spf-interval 10 50 20

prc-interval 10 50 20

lsp-gen-interval 5 50 20

passive-interface Loopback0

!

=========

CR01 Config

=========

!

interface GigabitEthernet0/0/0/1

description [Gi0/1] DR01

mtu 9000

ipv4 address 62.159.216.128 255.255.255.254

!

router isis 1

is-type level-2-only

net 00.0621.5921.6100.0

nsf cisco

log adjacency changes

lsp-gen-interval maximum-wait 5000 initial-wait 50 secondary-wait 20

lsp-refresh-interval 65000

max-lsp-lifetime 65535

address-family ipv4 unicast

metric-style wide

ispf level 2

spf-interval maximum-wait 10000 initial-wait 50 secondary-wait 20

!

interface GigabitEthernet0/0/0/1

circuit-type level-2-only

point-to-point

csnp-interval 10

hello-padding disable

hello-interval 1

address-family ipv4 unicast

mpls ldp sync level 2

!

===============

DR01#show isis neighbors

Tag 1:

System Id Type Interface IP Address State Holdtime Circuit Id

0621.5921.6100 L2 Gi0/1 62.159.216.128 INIT 2 00

RP/0/0/CPU0:CR01#show isis neighbors

Tue Jun 7 18:02:37.401 UTC

IS-IS 1 neighbors:

System Id Interface SNPA State Holdtime Type IETF-NSF

DR02 Gi0/0/0/2 *PtoP* Up 2 L2 Capable

Total neighbor count: 1

Note the missing DR01 from the neighbor table. Any help is appreciated, I am new to IS-IS just trying to learn.

Geevarghese Cheria · ‎06-15-2016

Hi Will,

Iam trying to give a general config explanation . Please check if you find helpful.

I think you have not set the nsap-address in your DR01 Config only CRO1 its there. Its like you need to do the same on both routers the same step..

Router(config)#router isis

Router(config-router)#net <nasp-address>..

I think its level 1. that is as there is only one area.. Can you try with level-1 (Not sure)

Router(config-router)#is-type level -1

now you may go to which all are the interfaces that you need to configure and type like..

Router(config-router)#int lo0

Router(config-if)#ip router isis

Next step is for authentication got to both routers and give

#router isis

#area-password <passwd>

If there is more than one are then need to give

#domain-password<passwd>

Thanks and Regards,

Geevarghese