Bug ID 485939: OSPF redistributing connected subnets that are configured in the network element with infinity metric in a HA pair.

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
10.0.0, 10.0.1, 10.1.0, 10.2.0, 10.2.1, 10.2.2, 10.2.3, 10.2.4, 11.0.0, 11.1.0, 11.2.0, 11.2.1, 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, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.4, 11.4.1 HF9

Opened: Oct 21, 2014
Severity: 3-Major
Related AskF5 Article:
K16822

Symptoms

In a HA pair setup, the active node is sending an As_External Link-State Advertisement (LSA) with infinity metric value for the redistributed connected subnets that are configured in the network element of the OSPF.

Impact

The active node in the HA pair sends an LSA with infinity metric that gets exchanged in the other networks affecting the routing process.

Conditions

HA pair with redistributed connected subnets and subnets configured in the network element in the OSPF.

Workaround

Clear ip ospf process fixes the issue. However, it is not an effective solution in a production environment.

Fix Information

OSPF sessions in an HA pair doesn't send an As_External LSA for the subnets that are configured as network element and redistributed as connected subnets.

Behavior Change