Users Guide

User Configurable CAM Allocation
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.)
The default CAM allocation settings for ingress ACL and QoS regions on an S5000 are:
• L2 ACL(l2acl): 4
• L3 ACL (ipv4acl): 4
• IPv6 L3 ACL (ipv6acl): 0
• L3 QoS (ipv4qos): 2
• L2 QoS (l2qos): 1
• L2PT (l2pt): 0
• MAC ACLs (ipmacacl): 0
• ECFMACL (ecfmacl): 0
• VMAN QoS (vman-qos): 0
• VMAN Dual QoS (vman-dual-qos): 0
• FCoE ACL (fcoeacl): 2
• iSCSI Opt ACL (iscsioptacl): 0
Enter the ipv6acl allocation as a factor of 2 (2, 4, 6, 8, 10). All other profile allocations can use either even-
numbered or odd-numbered ranges.
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.
For more information, refer to Re-allocating CAM for Ingress ACLs and QoS.
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
Access Control Lists (ACLs) 144