Bug ID 549868: 10G interoperability issues reported following Cisco Nexus switch version upgrade.

Last Modified: Nov 20, 2025

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 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, 11.5.1 HF10, 11.5.1 HF11, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 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, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Fixed In:
12.1.0, 11.6.1 HF1, 11.5.4 HF2

Opened: Oct 01, 2015

Severity: 2-Critical

Related Article: K48629034

Symptoms

10G link issues reported with VIPRION B2250, B4300 blades and BIG-IP 10x00 appliances connected to Cisco Nexus switches.

Impact

The links might not come up.

Conditions

Issues reported after version upgrade on Cisco switch to version 7.0(5)N1(1).

Workaround

Toggling the SFP+ interfaces reportedly usually restores link.

Fix Information

The BIG-IP system's 10G link now consistently becomes active when it is connected to other switches.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips