Hi, I have quite a large VTI network with three headends. At times the spokes start to flap one or two of their tunnels to the headends and this continues until I manually shut down the interface and bring it back up.
Is there a way I can automate this procedure? I was thinking about IP Event Dampening but this does not shut the interface down so the issue will continue. I was also thinking about an EEM applet but am not too experienced with EEM and my attempts so far have not resolved the issue.
In regards to the GRE comment, I should have mentioned earlier we are using VTI. Also, I do not think it would be an MTU issue as the issue occurs rarely (about twice a week, most times it is a different site) and we have over 130 sites setup. It is not a massive issue but it would be good if we could fix it.
And nope, no useful error messages. It just says the interface goes down then it comes up a few seconds later then goes down & continues to flap in that fashion until someone manually shuts the interface down and brings it back up.
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...