Bug ID 491454: SSL negotiation may fail when SPDY profile is enabled

Last Modified: Jul 18, 2026

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

Known Affected Versions:
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, 11.6.0, 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

Fixed In:
12.0.0, 11.5.3

Opened: Nov 18, 2014

Severity: 3-Major

Related Article: K16199

Symptoms

SSL handshake fails when SPDY profile is attached.

Impact

SSL handshake or other connection failure.

Conditions

This occurs when the following conditions are met: -- Client (i.e., Chrome for Android) attempts to use SPDY protocol using Next Protocol Negotiation (NPN) during SSL handshake. -- BIG-IP system has a Cavium Nitrox card.

Workaround

Remove SPDY profile.

Fix Information

SSL handshake now completes successfully when a SPDY profile is attached when Next Protocol Negotiation (NPN) is detected on a BIG-IP system with a Cavium Nitrox accelerator.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips