Last Modified: Jan 07, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4
Fixed In:
11.6.0, 11.5.1 HF5
Opened: Jan 23, 2014 Severity: 2-Critical
Secondary blades are not receiving OSPF multicast packets. Consequently, when failing over from one blade to another on a chassis-based system, the new primary blade does not send out an OSPF grace-LSA packet.
OSPF does not failover properly.
Occurs when the primary blade fails over on chassis-based systems configured for OSPF.
None.
IP multicast packets can now be delivered to all blades so that OSPF failover can occur.