Bug ID 1238413: The BIG-IP might fail to update ARL entry for a host in a VLAN-group

Last Modified: May 29, 2024

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

Known Affected Versions:
14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 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, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 17.0.0, 17.0.0.1, 17.0.0.2, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3

Fixed In:
17.1.1, 16.1.4, 15.1.10

Opened: Feb 09, 2023

Severity: 3-Major

Symptoms

ARP requests through a transparent or translucent VLAN-group might fail. The command "tmsh show net arp" displays the VLAN as the VLAN-group rather than a child VLAN. This symptom might be intermittent.

Impact

ARP resolution failure.

Conditions

- A transparent or translucent VLAN-group is configured. - ARP requests passing through the VLAN-group. - Higher gaps (approximately 9 hours) in layer 2 traffic seen by the BIG-IP from the target of the ARP request.

Workaround

Create a monitor on the BIG-IP to monitor the target of the ARP resolution. This will ensure that layer 2 traffic is seen by the BIG-IP from that host, keeping the ARL entries current.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips