I am trying to test WAN redundancy (uplink sharing), single site with two BGWs. I followed most of this guide (
https://www.arubanetworks.com/assets/tg/AVD_SD-Branch-Design.pdf) and it works initially.
Main Gateway = Internet connection
Backup Gateway = MPLS connection
I see both uplinks on the Main Gateway, but then to test failover, I reboot the main gateway:
VRRP does it's thing on the LAN side, eventually I get connectivity back to the DC via the MPLS circuit on the backup gateway (loose quite a bit of pings though)
Main gateway comes back online eventually, builds the Internet overlay and takes over Master for VRRP on the LAN side, but then it never builds the GRE tunnel again between the two gateways for the MPLS uplink
Anyone with experience configuring dual gateway at one site with uplink sharing ?