Deployment Guide

Displaying egress–queue Statistics
To display the number of transmitted and dropped packets and their rate on the egress queues of an interface, use the following
command:
● Display the number of packets and number of bytes on the egress-queue profile.
EXEC Privilege mode
show qos statistics egress-queue
DellEMC#show qos statistics egress-queue tengigabitethernet 1/1/1
Interface Te 1/1/1
Unicast/Multicast Egress Queue Statistics
Queue# Q# Type TxPkts TxPkts/s TxBytes TxBytes/s DroppedPkts DroppedPkts/s DroppedBytes
DroppedBytes/s
----------------------------------------------------------------------------------------------------------------------------
-
0 UCAST 0 0 0 0 0 0 0
0
1 UCAST 0 0 0 0 0 0 0
0
2 UCAST 0 0 0 0 0 0 0
0
3 UCAST 1708252734 2340972 874625399808 1198000301 1357413570 0 694995747840
0
4 UCAST 0 0 0 0 0 0 0
0
5 UCAST 0 0 0 0 0 0 0
0
6 UCAST 0 0 0 0 0 0 0
0
7 UCAST 0 0 0 0 0 0 0
0
8 UCAST 0 0 0 0 0 0 0
0
9 UCAST 1132 1 143063 217 0 0 0
0
10 MCAST 0 0 0 0 0 0 0
0
11 MCAST 0 0 0 0 0 0 0
0
12 MCAST 0 0 0 0 0 0 0
0
13 MCAST 0 0 0 0 0 0 0
0
14 MCAST 0 0 0 0 0 0 0
0
15 MCAST 0 0 0 0 0 0 0
0
16 MCAST 0 0 0 0 0 0 0
0
17 MCAST 0 0 0 0 0 0 0
0
18 MCAST 0 0 0 0 0 0 0
0
19 MCAST 0 0 0 0 0 0 0
0
DellEMC#
Pre-Calculating Available QoS CAM Space
Before Dell EMC 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
The output of this command, shown in the following example, displays:
● The estimated number of CAM entries the policy-map will consume.
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Quality of Service (QoS)