Reference Guide

742 | Quality of Service (QoS)
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Displaying WRED Drop Statistics
Display the number of packets FTOS dropped by WRED Profile using the command show qos statistics
from EXEC Privilege mode.
Figure 39-12. show qos statistics Command Example for the S5000
Pre-calculating Available QoS CAM Space
Pre-calculating Available QoS CAM Space is supported on the S5000 switch.
The command
test cam-usage enables you to verify that there are enough available CAM entries before
applying a policy-map to an interface so that you avoid exceeding the QoS CAM space and partial
configurations. This command measures the size of the specified policy-map and compares it to the
available CAM space in a partition for a specified port-pipe.
Test the policy-map size against the CAM space for a specific port-pipe or all port-pipes using these
commands:
•
test cam-usage service-policy input policy-map stack-unit unit-number port-set number
• test cam-usage service-policy input policy-map stack-unit all
The output of this command, shown in Figure 39-13, displays:
• the estimated number of CAM entries the policy-map will consume
• whether or not the policy-map can be applied
• the number of interfaces in a port-pipe to which the policy-map can be applied
Specifically:
• Available CAM is the available number of CAM entries in the specified CAM partition for the
specified stack-unit port-pipe.
• Estimated CAM is the estimated number of CAM entries that the policy will consume when it is
applied to an interface.
• Status indicates whether or not the specified policy-map can be completely applied to an interface in
the port-pipe.
FTOS#show qos statistics wred-profile
Interface Te 0/0
Drop-statistic WRED-name Dropped Pkts
Green WRED1 51623
Yellow WRED2 51300
Out of Profile 0
FTOS#