Users Guide

NOTE: Hot lock ACLs are supported for Ingress ACLs only.
CAM Allocation and CAM Optimization
The S5000 supports the CAM allocation and CAM optimization.
For more information, refer to the following:
• User Congurable CAM Allocation
• CAM Optimization
User Congurable CAM Allocation
Allocate space for IPV6 ACLs by using the cam-acl command in CONFIGURATION mode.
The CAM space is allotted in lter 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 prole allocations can use either even-numbered or odd-
numbered ranges.
Save the new CAM settings to the startup-cong (use write-mem or copy run start) then reload the system for the new
settings to take eect.
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 classication 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 proles, but is best used when verifying QoS optimization for IPv6 ACLs.
To determine whether sucient 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.
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Access Control Lists (ACLs)