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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 24 Configuring QoS
Troubleshooting Tips
–
The CoS value of IP packets is mapped by using the DSCP (or precedence) value in the packet
and the configured table map. Packets can be classified and queued by an output policy map
based on the marked CoS value.
–
The CoS value of non-IP packets remains unchanged.
• If the cpu traffic qos cos global configuration command is configured with a map from value of
CoS:
–
The CoS value of IP packets is mapped by using the CoS value in the packet and the configured
table map. Packets can be classified and queued by an output policy map based on the marked
CoS value.
–
The CoS value of non-IP packets is mapped by using the CoS value in the packet and the
configured table map. Packets can be classified and queued by an output policy map based on
the marked CoS value.
• If the cpu traffic qos cos global configuration command is configured with a map from value of
DSCP or precedence and CoS:
–
The CoS value of IP packets is mapped by using the DSCP or precedence value in the packet
and the configured table map. Packets can be classified and queued by an output policy map
based on the marked CoS value.
–
The CoS value of non-IP packets is mapped by using the CoS value in the packet and the
configured table map. Packets can be classified and queued by an output policy map based on
the marked CoS value.
Troubleshooting Tips
The on-demand TCAM resource allocation may fail due to the unavailability of resources for the
requested operation. In such scenarios, use the following troubleshooting tips:
1. Run the show platform tcam detailed command to understand the current resource allocation.
2. Use this information to find the features that are allocated resources.
3. Unconfigure the features that are no longer required to free the resources.