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OSPF with HSRP/VRRP

Why does it take a lot longer to recover from a failover than it does to fail?

Why does OSPF think there is a change if I am still using the virtual address just a different box responded?

Thanks

1 REPLY
Bronze

Re: OSPF with HSRP/VRRP

I've never tried this but I would imagine that when adjacent with a virtual IP, OSPF reacts to a failover the same way that TCP reacts. Imagine you're telnetted into the VIP of a router and that router fails such that another router takes over the VIP. What's going to happen when you type the next character into the telnet window? The router who now owns the VIP is going to send you a reset because it doesn't have a telnet session established with you -- that session was only established with the router that has failed.

In OSPF's case, seems to me that the neighbor relationship would have to be re-established.

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