F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

portoalegre's avatar
portoalegre
Icon for Nimbostratus rankNimbostratus
Jul 24, 2017

LTM Failover problem across OTV

I'm in a middle of a DC migration, IP addresses are remaining the same. Just a lift & shift exercise.   I've moved our Primary Active F5 LTM (Active/Standby setup) and when connected I forced DC ...
application delivery
BIG-IP
LTM
Lee_Sutcliffe's avatar
Lee_Sutcliffe
Icon for Nacreous rankNacreous
Jul 24, 2017

I had a similar problem a while ago but wasn't using OTV, but still have vPC on an early Nexus version. Have you tried configuring MAC Masquerading? This means you are not reliant on gratuitous ARP. I'd also try doing a tcpdump to ascertain if F5 is sending the gratuitous ARP, but I'd put money on it being a Cisco loop avoidance quirk