Overview
The error "AMS congestion errors" occurs frequently on some routers, requiring AMS restarts to temporarily resolve the issue. This is related to the "amsStoreFull" alarm, indicating that the message storage capacity for a particular address has been exceeded, impacting SMS delivery. The issue was identified as a configuration problem with a specific application, leading to AMS queue full errors. The solution involves reviewing message storage and routing rules, monitoring for "amsStoreFull" alarms, and optimizing the NTRA_SMS application configuration and delivery scheme.
Information
Error Message: "AMS congestion errors"
Cause: The error is related to the "amsStoreFull" alarm, indicating that the message storage capacity for a particular address has been exceeded, impacting SMS delivery. This was identified as a configuration issue with the NTRA_SMS application, leading to AMS queue full errors.
Resolution Steps:
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Review Message Storage and Routing Rules:
- Ensure that the message storage configuration and routing rules are optimized to prevent message buildup in AMS.
- Check if the MAX number of messages has been reached or if the delivery scheme is not emptying it fast enough.
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Monitor for "amsStoreFull" Alarms:
- Observe syslog for "amsStoreFull" alarms to confirm that the AMS message store is reaching its capacity.
- Refer to the article: “amsStoreFull” Alarm on the Syslog for more details.
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Investigate Traffic Patterns:
- Analyze traffic patterns to identify specific spikes or patterns that coincide with congestion events.
- Check for unexpected surges of traffic and ensure disk write speeds are optimized.
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Verify Resolution:
- Monitor syslog for any recurring "amsStoreFull" alarms or AMS queue full errors.
- Ensure no application faces rtrstorage failures or AMS queue full errors.
Important: Engage your infrastructure team to check for bottlenecks and consider a capacity exercise with your account manager if needed.
Frequently Asked Questions
- How do I know if this error applies to my situation?
- You'll see frequent "AMS congestion errors" on some routers, requiring AMS restarts to temporarily resolve the issue. Check syslog for "amsStoreFull" alarms to confirm.
- What should I do if the congestion errors persist?
- Review message storage and routing rules, monitor for "amsStoreFull" alarms, and investigate traffic patterns. Focus on optimizing the NTRA_SMS application configuration and delivery scheme.
- How can I prevent AMS congestion errors in the future?
- Ensure message storage and routing rules are optimized, monitor syslog for alarms, and analyze traffic patterns to prevent message buildup. Engage your infrastructure team to check for bottlenecks.
Priyanka Bhotika
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