Bug ID 638089: LACP and CMP state simultaneous fail on A112 and A113 platform

Last Modified: May 07, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP All(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,,,,, 11.6.4, 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, 12.1.2 HF1, 12.1.2 HF2, 12.1.3,,,,,,,, 12.1.4,

Opened: Jan 10, 2017
Severity: 3-Major


An internal traffic stoppage occurs and causes LACP ACTIVE trunk members to go down, and CMP state changes for the HOST and VCMP guests (if configured) on the impacted blade. The tmctl detailed statistics show sustained TX pause generated by HSB on one or more links and matching RX Pause received in interface_stat (on 4.1, 4.2, 4.3).


Traffic no longer functions on the blade where stoppage occurs.


This happens when an internal FPGA device runs into a bad state under heavy traffic load. The root cause of that is still under investigation. It happens extreme rarely.


Reboot blade.

Fix Information


Behavior Change