Cam Optimization; Test Cam Usage - Dell Force10 Z9000 Configuration Manual

The CAM space is allotted in FP blocks. The total space allocated must equal 13 FP blocks. Note that there
are 16 FP blocks, but the System Flow requires 3 blocks that cannot be reallocated. The default CAM
Allocation 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): 1
ipv6acl
The
either even or odd numbered ranges.
You must save the new CAM settings to the startup-config (
system for the new settings to take effect.

CAM optimization

CAM optimization
When 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 single
copy of the policy is written (only 1 FP entry will be used). When the command is disabled, the system
behaves as described in this chapter.

Test CAM Usage

The test cam-usage
This command applies to both IPv4 and IPv6 CAM profiles, but is best used when verifying QoS
optimization 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
mode to verify the actual CAM space required.
executing the command. The status column indicates whether or not the policy can be enabled.
Figure 6-1. Command Example: test cam-usage (C-Series)
FTOS#test cam-usage service-policy input TestPolicy linecard all
Linecard | Portpipe | CAM Partition | Available CAM | Estimated CAM per Port | Status
------------------------------------------------------------------------------------------
2 |
2 |
4 |
4 |
FTOS#
| Access Control Lists (ACLs)
92
allocation must be entered as a factor of 2 (2, 4, 6, 8, 10). All other profile allocations can use
is supported on platforms
command is supported on platforms
1 | IPv4Flow |
1 | IPv6Flow |
0 | IPv4Flow |
0 | IPv6Flow |
write-mem or copy run start
c s z
c e s z
test cam-usage
Figure 6-1 gives a sample of the output shown when
232 |
0 |
232 |
0 |
) then reload the
command in Privilege
0 | Allowed
0 | Allowed
0 | Allowed
0 | Allowed