Bug ID 445924: OSPF (v2 and v3) graceful restart not working on chassis-based systems

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF6, 11.3.0 HF9

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.



Fix Information

IP multicast packets can now be delivered to all blades so that OSPF failover can occur.

Behavior Change