Dell Z9000 Configuration Manual page 93

• CAM Optimization
User Configurable CAM Allocation
User configurable CAM allocations are supported on the Z9000 platform.
Allocate space for IPV6 ACLs by using the cam-acl command in CONFIGURATION mode.
The CAM space is allotted in filter processor (FP) blocks. The total space allocated must equal 13 FP
blocks. (There are 16 FP blocks, but System Flow requires three blocks that cannot be reallocated.)
Enter the ipv6acl allocation as a factor of 2 (2, 4, 6, 8, 10). All other profile allocations can use either
even or odd numbered ranges.
If you want to configure ACL's on VRF instances, you must allocate a CAM region using the vrfv4acl
option in the cam-acl command.
Save the new CAM settings to the startup-config (use write-mem or copy run start) then reload the
system for the new settings to take effect.
CAM Optimization
The CAM optimization command is supported on the Z9000 platform.
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 Z9000 platform.
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
Dell#test cam-usage service-policy input TestPolicy linecard all
Linecard|Portpipe|CAM Partition|Available CAM|Estimated CAM per Port|Status
--------------------------------------------------------------------------
2| 1|
2| 1|
4| 0|
4| 0|
Dell#
Access Control Lists (ACLs)
Command
IPv4Flow|
IPv6Flow|
IPv4Flow|
IPv6Flow|
232|
0|
232|
0|
0|Allowed
0|Allowed
0|Allowed
0|Allowed
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