Displaying Egress-Queue Statistics; Pre-Calculating Available Qos Cam Space - Dell S6100 Configuration Manual

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
Example of show qos statistics egress-queue Command
Dell#show qos statistics egress-queue tengigabitethernet 1/4/1/2
Interface Te 1/4/1/2
Unicast/Multicast Egress Queue Statistics
Queue# Q# Type TxPkts
---------------------------------------------------------------------------------------------------------------------------
0 UCAST 0
1 UCAST 0
2 UCAST 0
3 UCAST 1708252734
4 UCAST 0
5 UCAST 0
6 UCAST 0
7 UCAST 0
8 UCAST 0
9 UCAST 1132
10 MCAST 0
11 MCAST 0
12 MCAST 0
13 MCAST 0
14 MCAST 0
15 MCAST 0
16 MCAST 0
17 MCAST 0
18 MCAST 0
19 MCAST 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
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.
Specifically:
• Available CAM — the available number of CAM entries in the specified CAM partition for the specified line card or stack-unit port-
pipe.
716 Quality of Service (QoS)
TxPkts/s TxBytes TxBytes/s
0 0
0 0
0 0
2340972 874625399808 1198000301
0 0
0 0
0 0
0 0
0 0
1 143063
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
DroppedPkts DroppedPkts/s
0 0
0 0
0 0
1357413570
0 0
0 0
0 0
0 0
0 0
217 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
DroppedBytes DroppedBytes/s
0 0
0 0
0 0
0 694995747840
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0