Service Manual

Displaying egress-queue Statistics
To display egress-queue statistics of both transmitted and dropped packets and bytes, use the following command.
• Display the number of packets and number of bytes on the egress-queue prole.
EXEC Privilege mode
show qos statistics egress-queue
Example of the show qos statistics egress-queue Command
Dell#show qos statistics egress-queue
Interface Gi 1/1
Queue# Q# Type TxPkts TxBytes DroppedPkts DroppedBytes
--------------------------------------------------------------------------------
--
0 UCAST 0 0 0 0
1 UCAST 0 0 0 0
2 UCAST 0 0 0 0
3 UCAST 0 0 0 0
4 UCAST 0 0 0 0
5 UCAST 0 0 0 0
6 UCAST 0 0 0 0
7 UCAST 0 0 0 0
8 UCAST 204 13056 0 0
9 MCAST 0 0 0 0
10 MCAST 0 0 0 0
11 MCAST 0 0 0 0
12 MCAST 0 0 0 0
13 MCAST 0 0 0 0
14 MCAST 0 0 0 0
15 MCAST 0 0 0 0
16 MCAST 0 0 0 0
17 MCAST 0 0 0 0
Dell#
Pre-Calculating Available QoS CAM Space
Before Dell Networking OS version 7.3.1, there was no way to measure the number of CAM entries a policy-map would consume (the
number of CAM entries that a rule uses is not predictable; from 1 to 16 entries might be used per rule depending upon its
complexity). Therefore, it was possible to apply to an interface a policy-map that requires more entries than are available. In this case,
the system writes as many entries as possible, and then generates an CAM-full error message (shown in the following example). The
partial policy-map conguration might cause unintentional system behavior.
%EX2YD:12 %DIFFSERV-2-DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3
Cam(PolicyQos) for class 2 (TeGi 12/20) entries on portpipe 1
The test cam-usage command allows 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 congurations. This command measures the size of the
specied policy-map and compares it to the available CAM space in a partition for a specied port-pipe.
Test the policy-map size against the CAM space for a specic port-pipe or all port-pipes using these commands:
• test cam-usage service-policy input policy-map {stack-unit } number port-set number
• test cam-usage service-policy input policy-map {stack-unit } all
The output of this command, shown in the following example, 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.
Specically:
Quality of Service (QoS)
603