Bug ID 485948: Machine Info Agent should have a fallback branch

Last Modified: Sep 13, 2023

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

Known Affected Versions:
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 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.0 HF4, 11.4.1 HF9

Opened: Oct 21, 2014

Severity: 3-Major

Related Article: K17418


Machine Info agent is not supported for legacy logon clients (for example, mobile clients and Linux CLI); it is only supported for web logon clients (browsers and BIG-IP Edge Clients). However, the Machine Info agent does not throw any error if a legacy logon client connects to APM with the Machine Info agent in it.


The impact of this issue is that the Machine Info agent does not create any machine information-related session variables for legacy logon clients, neither does it indicate that it is not supported.


This occurs with a Machine Info agent in the access policy and legacy logon clients.


To work around the problem, use the Client Type agent to distinguish between legacy logon or web logon clients. And then only add the Machine Info agent in web logon clients branch.

Fix Information

The Machine Info agent now differentiates between legacy logon clients and web logon clients by creating an error session variable. The error session variable is set to 1 when legacy logon clients connect to APM and 0 otherwise.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips