Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

Thiyagu's avatar
Thiyagu
Icon for Cirrus rankCirrus
Jun 16, 2020

ARP issues between Nexus 7K and F5 LTM

Hi Team, We have faced a weird issue in our environment. issue: loadbalancer-1 failedover to Load balancer-2. Whereas all the production traffic flow did not failover properly to load balancer-2 ...
application delivery
big-ip
LTM
Henric_Petterss's avatar
Henric_Petterss
Icon for Cirrus rankCirrus
Jun 17, 2020

Don't know if it is the problem here, but F5 LTM will not send out GARP for vlans where it doesn't have a self-ip. We noticed that recently when we got the same problem as you have. We did not have self-ip in all vlans so the VIP's on that were not moved in a failover. We added a self-ip on that vlan (in the matching ip-subnet), and then failover started working again.