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Ron_Peters_2122's avatar
Ron_Peters_2122
Icon for Altostratus rankAltostratus
Sep 15, 2016

ARP/MAC Tables Not Updating on Core Switches After F5 LTM Failover (GARP Issue?)

We have two F5 LTM 5250v appliances configured with 2 vCMP instances each in an HA pair (Active/Standby). Each F5 5250v has a 10G uplink to two core switches (Cisco Nexus 7010) configured as an LACP ...
application delivery
arp
fail over
gratuitous arp
LTM
ekaleido's avatar
ekaleido
Icon for Cirrus rankCirrus
Sep 15, 2016

Out of curiousity, can you force a failover whilse having the following tcpdump running on the box that will become active?

 

tcpdump -ni 0.0:nnn -s0 -vvv arp

 

Or optionally to capture to a pcap...

 

tcpdump -ni 0.0:nnn -s0 -vvv arp -w /shared/tmp/garp.pcap