Bug ID 1291565: BIG-IP generates more multicast packets in multicast failover high availability (HA) setup

Last Modified: Dec 13, 2023

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5

Fixed In:
17.1.1, 16.1.4, 15.1.10

Opened: Apr 21, 2023

Severity: 3-Major

Symptoms

BIG-IP generates additional high availability (HA) multicast packets when the device name is changed. Running the following commands shows the duplicate multicast entries on mgmt:mgmt interface on /var/log/sodlog file # /usr/bin/cmd_sod get info

Impact

BIG-IP multiplies the number of multicast packets when the device name is changed.

Conditions

-- BIG-IPs configured with Multicast failover . -- The self-device name is changed.

Workaround

Restarting the sod would remove the duplicate multicast entries. #bigstart restart sod

Fix Information

Cleanup the multicast entries populated on old device name when the name is updated.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips