Bug ID 604061: Link Aggregation Control Protocol May Lose Synchronization after TMM Crash

Last Modified: Mar 17, 2021

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2

Fixed In:
13.0.0, 12.1.2 HF1

Opened: Jul 11, 2016
Severity: 3-Major

Symptoms

Traffic does not pass through a trunk interface and /var/log/ltm contains messages such as: lacpd[6636]: 01160011:6: Link 2.2 Actor Out of Sync lacpd[6636]: 01160012:6: Link 2.2 Partner Out of Sync

Impact

Trunks created by LACP do not pass traffic.

Conditions

1) BIG-IP 2000/4000 or similar platform where "qprop tmos.lacpd_depends_on_tmm == true" 2) Passive LACP trunk 3) tmm has crashed after box has come up 4) tmm startup delayed by dumping large core file 5) tmm startup delayed by large config or busy control plane

Workaround

Restart lacpd after tmm has come up again: "bigstart restart lacpd" Alternatively, modify /etc/bigstart/scripts/tmm.finish to restart lacpd on tmm going down Modify this line: for d in admd asm avrd dosl7d; do With these: for d in lacpd admd asm avrd dosl7d; do if [ `$BIGSTART singlestatus $d` = "run" ]; then $BIGSTART restart $d & fi done

Fix Information

None

Behavior Change