Content Addressable Memory (CAM) | 287
Configure Ingress Layer 2 ACL Sub-partitions
IPv4Flow sub-partitions are supported on platform e
The Ingress Layer 2 ACL CAM partition has sub-partitions for several types of information. Table 11-6
lists the sub-partition and the percentage of the Ingress Layer 2 ACL CAM partition that FTOS allocates to
each by default.
You can re-configure the amount of space, in percentage, allocated to each sub-partition
.
• Apply the Ingress Layer 2 ACL configuration to entire system by entering the command cam-l2acl from
CONFIGURATION mode, however, you must save the running-configuration to affect the change.
The amount of space that you can distribute to the sub-partitions is equal to the amount of CAM space that
the selected CAM profile allocates to the Ingress Layer 2 ACL partition (refer to Table 11-1). FTOS
requires that you specify the amount of CAM space for all sub-partitions and that the sum of all
sub-partitions is 100%. FTOS displays message Message 4 if the total allocated space is not correct.
Table 11-6. Layer 2 ACL CAM Sub-partition Sizes
Partition % Allocated
Sysflow 6
L2ACL 14
*PVST 50
QoS 12
L2PT 13
FRRP 5
Message 4 Layer 2 ACL Configuration Error
% Error: Sum of all regions does not total to 100%.
Note: You must allocate at least (<number of VLANs> * <Number of switching ports per port-pipe>)
entries at least when employing PVST+ . For example, the default CAM Profile allocates 1000 entries to
the Ingress Layer 2 ACL CAM region, and a 48-port linecard has two port-pipes with 24 ports each. If
you have 5 VLANs, then you must allocate at least 120 (5*24) entries to the PVST Ingress Layer 2 ACL
CAM region, which is 12% of the total 1000 available entries.
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