Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
615
Views
0
Helpful
5
Replies

IP-EIGRP: Callback: callbackup_routes

kevinhobson2000
Level 1
Level 1

‎05-04-2007 03:53 AM - edited ‎03-03-2019 04:49 PM

Hi

I have two routers with static routes configured which are then redistributed into eigrp on the second router the routes are weighted 200 as this is a backup route every so often traffic starts to take the backup link and i get the message below in the log:

P-EIGRP: Callback: callbackup_routes 172.36.0.0/16

*Apr 18 08:40:58.813: IP-EIGRP: Callback: callbackup_routes 172.32.0.0/15

*Apr 18 08:40:58.813: IP-EIGRP: Callback: callbackup_routes 172.34.0.0/16

*Apr 18 08:40:58.813: IP-EIGRP: Callback: callbackup_routes 172.20.0.0/16

Any ideas what is causing this?

cheers

Kev

Labels:
0 Helpful
5 Replies 5

royalblues
Level 10
Level 10

‎05-04-2007 03:57 AM

Kev,

Do you see any logs for any flaps of the EIGRP neighbor relationship?

IP-EIGRP: Callback: callbackup_routes means at some point, EIGRP attempted to install routes to the destinations and failed, most commonly because of the existence of a route with a better administrative distance.

When this occurs, EIGRP registers its route as a backup route. When the better route disappears from the routing table, EIGRP is called back through callbackup_routes so that it can attempt to reinstall the routes that it is holding in the topology table.

HTH, rate if it does

Narayan

0 Helpful

kevinhobson2000
Level 1
Level 1
In response to royalblues

‎05-04-2007 05:01 AM

Thats the strange thing i dont and thats what puzzles me please see attachment for log.

17707-sho route eigrp log.log
0 Helpful

royalblues
Level 10
Level 10
In response to kevinhobson2000

‎05-04-2007 05:06 AM

Kevin,

Do you have the eigrp log-neighbor-changes commannd under EIGRP process?

Narayan

0 Helpful

kevinhobson2000
Level 1
Level 1
In response to royalblues

‎05-04-2007 05:18 AM

Narayan,

Ive just checked the config and whoever originally configured this has configured it not to.

Cheers

Kev

0 Helpful

royalblues
Level 10
Level 10
In response to kevinhobson2000

‎05-04-2007 06:07 AM

Can you have this configured and then check the logs to see whether you see neighbor flaps along with the other logs

HTH, rate if it does

Narayan

0 Helpful
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents
Review Cisco Networking products for a $25 gift card