NimbostratusThere are two LTMs configured in Active/standby configuration. Both LTM have eBGP session to the router. How to force active LTM failover to standby in case of BGP session is down?
CirrocumulusOut of the box you could use HA groups and a monitor pool that simply requires the routes to be present.
If the routes disappear the pool goes down. That promotes to an ha group failure and the node goes standby
(I usually just monitor something that traverses the routes provided by the bgp)
H
NimbostratusThis solution works partially from my point of view. Both LTMs have a static default route to the same router. This router contains information about all routes inside of environment. I can find the external route learned via BGP.
if bgp is down, but LTM still can reach the router and router knows about the specific route connected to the router, the LTM will stay active. It means that VIPs will be not advertised any more.
If I track the route that router learns via BGP and is not in the local routing table; and bgp session between active LTM and router is down, than the absence of route will trigger failover. This is good. But if this external route is disappeared from the routing table of the router and both LTMs track this route, than the both LTMs will make permanent failover to each other?