If we see an issue where vrouter-agent on all the computes keep on restarting, then please check if you have enabled "Mirroring" on any of the Virtual Networks (VNs) which is attached to an LR (Logical Router). Note that this article is relevant only if vrouter-agent restart is seen on "all the computes in deployment".

vrouter-agent crash on all the computes.

vrouter-agent on all the computes keep on restarting.

Workaround is to disable mirroring on VNs that are a part of LR. Use mirroring on VMIs instead.

Solution is to upgrade to Contrail 21.4.L4 versions and later.