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

Brandon_79990's avatar
Brandon_79990
Icon for Nimbostratus rankNimbostratus
Mar 27, 2012

Active/Passive pair on LTM and ARP updates on failover

Hello everybody,     I have looked around for this answer for a while, but I havent found anything that can fix my problem.     In a one-armed scenario, I have 2 Big-IP LTMs configured in ...
management
monitoring
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Mar 27, 2012
Hi Brandon,

 

 

It sounds like the switches might not be learning the new MAC address for the newly active unit. When the new unit goes active it should send gratuitous ARPs for all of the addresses it now owns. You could configure MAC masquerading to ease this process.

 

 

sol7214: Configuring MAC masquerading

 

http://support.f5.com/kb/en-us/solutions/public/7000/200/sol7214.html

 

 

Aaron