cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Announcements

This community is for technical, feature, configuration and deployment questions.
For production deployment issues, please contact the TAC!

Register for the monthly Cisco DNA Center Ask the Expert Sessions to learn about Cisco DNA Center configuration and deployment.
597
Views
0
Helpful
1
Replies
Highlighted
Beginner

%CLNS-5-ADJCHANGE: ISIS (MTT): A

I am currently getting topology mismatches and adjacency changes on a router, and it is happening quit frrequently.  There error messages that I am getting is 

 

Dec 4 10:39:31 cr01.brgn.monmouth.com 370: Dec 4 10:39:30: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) Down, hold time expired
Dec 4 10:39:31 cr01.brgn.monmouth.com 371: Dec 4 10:39:30: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) topology mismatched, TID (2) not in remote IIH
Dec 4 10:39:34 cr01.brgn.monmouth.com 372: Dec 4 10:39:33: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) Up, new adjacency
Dec 4 10:40:07 cr01.brgn.monmouth.com 373: Dec 4 10:40:06: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) Down, hold time expired
Dec 4 10:40:07 cr01.brgn.monmouth.com 374: Dec 4 10:40:06: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) topology mismatched, TID (2) not in remote IIH
Dec 4 10:40:10 cr01.brgn.monmouth.com 375: Dec 4 10:40:09: %CLNS-5-ADJCHANGE: ISIS (MTT): Adjacency to 2091.9101.4005 (GigabitEthernet0/3.551) Up, new adjacency

 

 

 

The config has not been changed in over 3 years, and this just started happening a few days ago.  Also, the other router, has not had any isis changes as well in over 3 years.  Need help on solving this issue.

1 REPLY 1
Highlighted
Cisco Employee

I would suggest working on a TAC case to understand this further.. there can be a number of reasons that this can happen including the load on these routers etc.. Basically the error says that the router either did not receive the hello packet or the IS-IS process did not receive the hello packet.

Content for Community-Ad