Bug ID 555686: Copper SFPs OPT-0015 on 10000-series appliance may cause interfaces to not come up and/or show corrupted serial numbers

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
11.4.1, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 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, 12.0.0, 12.0.0 HF1, 12.0.0 HF2

Fixed In:
12.1.0, 12.0.0 HF3, 11.6.1, 11.5.4, 11.4.1 HF10

Opened: Nov 02, 2015
Severity: 2-Critical
Related AskF5 Article:
K10733505

Symptoms

Some OPT-0015 copper small form-factor pluggable (SFP) transceiver might cause an internal bus to hang.

Impact

Corrupted serial number information from SFPs, and fiber SFPs may not come up. Enable and disable of copper SFPs may not work.

Conditions

This happens only when the following conditions are met: -- 10000-series appliances. -- At reboot, at a restart of the bcm56xxd daemon, or when a copper SFP is enabled or disabled. -- There is at least one copper SFP present in the appliance. -- Interfaces are spread between hardware muxes. That means some SFPs are in ports 1.1-1.8 and other SFPs are in ports 1.9-1.16.

Workaround

None.

Fix Information

The system now ensures that the I2C bus muxes only enable a single interface, so the issue with interfaces on Copper SFPs OPT-0015 on 10000-series appliances no longer occurs.

Behavior Change