Users Guide

Example of the show qos statistics egress-queue Command
Dell#show qos statistics egress-queue
Interface Te 1/1/1
Unicast/Multicast Egress Queue Statistics
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 configuration 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
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 } number port-set
number
• test cam-usage service-policy input policy-map {stack-unit } all
Quality of Service (QoS) 791