View Cam Usage; Cam Optimization; Troubleshoot Cam Profiling; Qos Cam Region Limitation - Dell S4048–ON Configuration Manual

Ipv6Acl :
Ipv4Qos :
L2Qos :
L2PT :
IpMacAcl :
VmanQos :
VmanDualQos :
EcfmAcl :
FcoeAcl :
iscsiOptAcl :
ipv4pbr :
vrfv4Acl :
Openflow :
fedgovacl :
Dell#

View CAM Usage

View the amount of CAM space available, used, and remaining in each partition (including IPv4Flow and Layer 2 ACL sub- partitions) using
the show cam-usage command in EXEC Privilege mode
The following output shows CAM blocks usage for Layer 2 and Layer 3 ACLs and other processes that use CAM space:
Example of the show cam-usage Command
Dell#show cam-usage
Stackunit|Portpipe| CAM Partition
========|========|=================|=============|=============|==============
0 0 | IN-L3 ACL
| | IN-V6 ACL
| | IN-L2 ACL
| | OUT-L3 ACL
| | IN-L3 ECMP GRP|
| | OUT-V6 ACL
| | OUT-L2 ACL
7 | 0 | IN-L3 ACL
| | IN-V6 ACL
| | IN-L2 ACL
| | OUT-L3 ACL
| | OUT-V6 ACL
| | OUT-L2 ACL
Codes: * - cam usage is above 90%.
Dell#

CAM Optimization

When you enable the CAM optimization, if a Policy Map containing classification rules (ACL and/or DSCP/ ip-precedence rules) is applied
to more than one physical interface on the same port-pipe, only a single copy of the policy is written (only one FP entry is used). When you
disable this command, the system behaves as described in this chapter.

Troubleshoot CAM Profiling

The following section describes CAM profiling troubleshooting.

QoS CAM Region Limitation

To store QoS service policies, the default CAM profile allocates a partition within the IPv4Flow region.
If the QoS CAM space is exceeded, a message similar to the following displays.
%EX2YD:12 %DIFFSERV-2-DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3
Cam(PolicyQos) for class 2 (Te 1/20) entries on portpipe 1 for linecard 1
%EX2YD:12 %DIFFSERV-2-
DSA_QOS_CAM_INSTALL_FAILED: Not enough space in L3 Cam(PolicyQos) for class 5 (Te 1/
22) entries on portpipe 1 for linecard 1
0
2
1
0
0
0
0
0
0
0
0
0
0
0
| Total CAM |
| 512 |
| 0 |
| 768 |
| 158 |
1024 |
| 158 |
| 206 |
| 512 |
| 0 |
| 768 |
| 158 |
| 158 |
| 206 |
Used CAM |Available CAM
1 | 511
0 | 0
0 | 768
5 | 153
0 | 1024
0 | 158
7 | 199
1 | 511
0 | 0
0 | 768
5 | 153
0 | 158
7 | 199
Content Addressable Memory (CAM) 239