Bug ID 1210073: Observing "Building LLDP PDU Failed!" error messages in partition's VELOS log continuously

Last Modified: Dec 07, 2023

Affected Product(s):
F5OS None(all modules)

Known Affected Versions:
F5OS-C 1.5.1

Fixed In:
F5OS-C 1.6.0

Opened: Dec 15, 2022

Severity: 2-Critical

Symptoms

Observing "Building LLDP PDU Failed!" error messages in partition's VELOS log continuously. [root@controller-2 IMAGES]# tail -f /var/F5/partition2/log/velos.log |grep Err 2022-12-15T16:22:07.718412+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:22:08.719292+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:22:37.733326+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:22:38.733361+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:23:07.751908+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:23:08.751963+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:23:37.770928+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:23:38.771927+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:24:07.795989+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf". 2022-12-15T16:24:08.796913+00:00 100.65.18.3 blade-3(p2) lldpd[9]: priority="Err" version=1.0 msgid=0x6001000000000009 msg=": Building LLDP PDU Failed! : Unable to obtain System Serial Number" func="buildPktBuf".

Impact

When this occurs, the LLDP PDUs will fail to be constructed due to missing chassis serial number resulting in loss of LLDP functionality.

Conditions

So far this case has only been observed in an upgrade (1.3.0 -> 1.5.0), downgrade (1.5.0 -> 1.3.2), upgrade (1.3.2 -> 1.5.1) scenario.

Workaround

The following steps will resolve this issue: 1. On the active CC 'docker restart vcc-chassis-manager' 2. Restart LLDP pod for all active partitions

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips