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Xr-to-IOS IS-IS Adjacency issue.

Hi,  I have configured  IS-IS between the two routers in which one is  XR router. The adjacency between the is stuck on "INIT" state, I want to create L2 adjacency.

Below is the OUTPUT of logging  for IS-IS I have applied on XR router, kindly anybody tell me what is the meaning of the following error ?

 


XR:Jun  8 18:54:21.787 : isis[1006]: SEND P2P IIH (L1L2) on GigabitEthernet0/0/0/0: Do IETF 3-way handshake: State DOWN; Local Ext Circuit Number 0xb00; Nbor System ID N/A, Nbor Ext. Circuit Number N/A

XR:Jun  8 18:54:21.787 : isis[1006]: SEND P2P IIH (L1L2) on GigabitEthernet0/0/0/0: Holdtime 30s, Length 72
XR:Jun  8 18:54:21.787 : isis[1006]: SCHED P2P IIH (L1L2) on GigabitEthernet0/0/0/0: Send IIH in 8.15s ... (requested non-jittered delay was 10.00s)

XR:Jun  8 18:54:29.956 : isis[1006]: SEND P2P IIH (L1L2) on GigabitEthernet0/0/0/0: Do IETF 3-way handshake: State DOWN; Local Ext Circuit Number 0xb00; Nbor System ID N/A, Nbor Ext. Circuit Number N/A
XR:Jun  8 18:54:29.956 : isis[1006]: SEND P2P IIH (L1L2) on GigabitEthernet0/0/0/0: Holdtime 30s, Length 72

 

Regards.

  • XR OS and Platforms
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1 REPLY
Cisco Employee

Have you checked MTU mismatch

Have you checked MTU mismatch? XR and regular IOS calculates MTU differently.

You can use "clns mtu" to solve clns adjacency MTU issues.

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