Bug ID 500407: Non-HSB platforms do not support DNS Rapid Response

Last Modified: Nov 07, 2022

Bug Tracker

Affected Product:  See more info
BIG-IP GTM(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

Opened: Jan 09, 2015
Severity: 4-Minor

Symptoms

The following features are not supported on non-High-Speed Bridge (HSB) platforms when DNS Rapid Response is used: -- LTM iRules: + Virtual server with iRules configured in an attached DNS profile.+ Execution failure of configured iRules (e.g., for Action Allow). -- Software DoS functionality: + Query may be answered or dropped before SW DoS has a chance to execute. -- All DNS profile options: + DNS Cache. + DNSSEC. + DNS6-4

Impact

Some features are not supported when DNS Rapid Response is used due to performance issues.

Conditions

DNS Rapid Response is used. This occurs on all non-HSB platforms, e.g., VADC (VE). To determine whether a system is an HSM platform, run the Linux command: lspci. The presence of the string 'F5 Networks Ethernet controller' indicates a non_HSB platform.

Workaround

None

Fix Information

None

Behavior Change