Bug ID 517551: Assembly Can Create Response Stalls

Last Modified: Jan 07, 2026

Affected Product(s):
BIG-IP AAM(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, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Apr 10, 2015

Severity: 3-Major

Related Article: K17875190

Symptoms

In some rare cases, if a document is 'assembled', it can stall, giving little or no response to the client.

Impact

Requests for that document results in client timeouts.

Conditions

This might occur when the original document is smaller than the small object cache size limit, but grows to be larger than the small object cache size limit during assembly. In rare cases, this can cause the document to be unservable.

Workaround

Create a policy node for that specific document, and set to 'proxy always.'

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips