136 | IP Access Control Lists (ACL), Prefix Lists, and Route-mapsw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Allocate space for IPV6 ACLs on the C-Series by using the cam-acl command in CONFIGURATIONmode.The CAM space is allotted in FP blocks. The total space allocated must equal 13 FP blocks. Note that thereare 16 FP blocks, but the System Flow requires 3 blocks that cannot be reallocated. The default CAMAllocation settings on a C-Series matching are:• L3 ACL (ipv4acl): 6• L2 ACL(l2acl) : 5• IPv6 L3 ACL (ipv6acl): 0• L3 QoS (ipv4qos): 1• L2 QoS (l2qos): 1The ipv6acl allocation must be entered as a factor of 2 (2, 4, 6, 8, 10). All other profile allocations can useeither even or odd numbered ranges.You must save the new CAM settings to the startup-config (write-mem or copy run start) then reload thesystem for the new settings to take effect.CAM optimizationCAM optimization is supported on platforms c sWhen this command is enabled, 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 singlecopy of the policy is written (only 1 FP entry will be used). When the command is disabled, the systembehaves as described in this chapter.Test CAM UsageThe test cam-usage command is supported on platforms c e sThis command applies to both IPv4 and IPv6 CAM profiles, but is best used when verifying QoSoptimization for IPv6 ACLs.Use this command to determine whether sufficient ACL CAM space is available to enable a service-policy.Create a Class Map with all required ACL rules, then execute the test cam-usage command in Privilegemode to verify the actual CAM space required. Figure 8-1 gives a sample of the output shown whenexecuting the command. The status column indicates whether or not the policy can be enabled.
