Problem Statement
An Avaya Session Manager (SM) reports a Minor alarm with maintenance object avSessMgrAFWL16504 and description "SIP firewall loop detection(Minor)". The alarm code is ACT while active.
Impact
Potential SIP routing or firewall loop condition detected by Session Manager. Impact may be limited or intermittent when the alarm is Minor, but repeated or persistent alarms can indicate abnormal SIP message handling and should be reviewed.
Alarm
avSessMgrAFWL16504 - SIP firewall loop detection(Minor) - ACT
Troubleshooting Steps
- Confirm the alarm is still active in the monitoring dashboard or Avaya management interface.
- Record the alarm details, including severity, maintenance object, alarm code, timestamp, and affected Avaya Session Manager node.
- Check whether the alarm has cleared automatically. If cleared, continue monitoring for recurrence.
- If the alarm remains active or recurs, review recent SIP routing, adaptation, firewall, or network changes that could cause SIP messages to loop.
- Check Session Manager alarms and logs around the alarm timestamp for repeated SIP messages, routing failures, or loop-related events.
- Validate SIP routing policies, dial patterns, entity links, and adjacent SIP devices to ensure calls or messages are not being routed back to the same path repeatedly.
- If a configuration issue is identified, correct the routing or firewall rule causing the loop and verify that the alarm clears.
- If the alarm persists after configuration review, escalate to Avaya voice support with sanitized alarm details and relevant log excerpts.
Resolution
In the referenced event, the Minor Avaya Session Manager SIP firewall loop detection alarm cleared. No further corrective action was documented. For future occurrences, verify clearance in monitoring and investigate SIP routing or firewall loop conditions if the alarm persists or recurs.