MTU size messages for DMVPN tunnels

brian.trotter

I have been getting numerous alerts from Orion about the MTU size of our DMVPN tunnels changing.

For instance, I am seeing these alerts constantly. The numbers go back and forth.

2/1/2013 3:58 PM router1 - DMVPN router - Tunnel2 · Europe (DMVPN) MTU changed from 17912 to 17878 bytes

2/1/2013 1:27 PM router1 - DMVPN router - Tunnel2 · Europe (DMVPN) MTU changed from 17878 to 17912 bytes

If I look at the configuration on the router, I see the MTU is set for 1400. However if I run a "show int tunnel 2", it shows the MTU as 17912.

I found an issue mentioned about the difference in the way the MTU is displayed in this article: https://supportforums.cisco.com/thread/2088244

I would like to find out how to suppress this message as I dont think anything is wrong, but it is filling up my dashboard with errors.

ashley.cotter

Just so you know I created a customer event summary that only showed NodeDown, NodeUP and NodeReboot events for a client of ours using the Custom Report resource..

Hope you can make something similar aswell that will give you what you need.