Reference Guide

CAM Optimization
When you enable this command, 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.
Test CAM Usage
The test cam-usage command is supported on the S5000 platforms.
This command applies to both IPv4 and IPv6 CAM profiles, but is best used when verifying QoS
optimization for IPv6 ACLs.
To determine whether sufficient ACL CAM space is available to enable a service-policy, use this
command. To verify the actual CAM space required, create a class map with all the required ACL rules,
then execute the test cam-usage command in Privilege mode. The following example shows the
output when executing this command. The status column indicates whether you can enable the policy.
Example of the test cam-usage Command
Dell#test cam-usage service-policy input TestPolicy stack-unit all
Linecard|Portpipe|CAM Partition|Available CAM|Estimated CAM per Port|Status
--------------------------------------------------------------------------
2| 1| IPv4Flow| 232| 0|Allowed
2| 1| IPv6Flow| 0| 0|Allowed
4| 0| IPv4Flow| 232| 0|Allowed
4| 0| IPv6Flow| 0| 0|Allowed
Dell#
View CAM-ACL Settings
The show cam-acl command is supported on the platform.
Thisshow cam-acl command shows the cam-acl setting that will be loaded after the next reload.
Example of Viewing CAM-ACL Settings
Dell(conf)#do show cam-acl
-- Chassis Cam ACL --
Current Settings(in block sizes) Next Boot(in block sizes)
1 block = 128 entries
L2Acl : 6 4
Ipv4Acl : 4 2
Ipv6Acl : 0 0
Ipv4Qos : 2 2
L2Qos : 1 1
L2PT : 0 0
IpMacAcl : 0 0
VmanQos : 0 0
VmanDualQos : 0 0
EcfmAcl : 0 0
FcoeAcl : 0 0
iscsiOptAcl : 0 0
ipv4pbr : 0 2
vrfv4Acl : 0 2
Openflow : 0 0
Access Control Lists (ACLs)
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