Symptoms
When PEM is configured to use bwc policy and cause re-evaluations due to pem policy change in configuration and/or PCRX could cause leak in bwc memory for active flows.
Impact
PEM configured with BWC doing PEM policy changes might trigger leak. Eventual low memory conditions, possibly followed by TMM core and traffic outage.
Conditions
This occurs when the following conditions are met: PEM is configured to use BWC. -- System is processing active flows. -- PEM is applying a policy change event for live flows.
Workaround
To work around this issue, complete the following steps: -- Restart tmm. -- Upgrade the image. -- Avoid PEM policy change events for live traffic flows. -- Attach BWC to the PEM policy after PEM policy change events.
Fix Information
The case in which the PEM policy is modified while the system is processing live traffic, PEM now initiates policy re-evaluation and BWC is attached correctly to the policy, so no memory leak occurs.
