Reference Guide

Content Addressable Memory | 219
Figure 10-7. Viewing CAM Usage Information
CAM Optimization
CAM optimization is supported on platforms c s
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.
Applications for CAM Profiling
LAG Hashing
FTOS includes a CAM profile and microcode that treats MPLS packets as non-IP packets. Normally,
switching and LAG hashing is based on source and destination MAC addresses. Alternatively, you can
base LAG hashing for MPLS packets on source and destination IP addresses. This type of hashing is
allowed for MPLS packets with 5 labels or less.
MPLS packets are treated as follows:
• When MPLS IP packets are received, FTOS looks up to 5 labels deep for the IP header.
R1#show cam-usage
Linecard|Portpipe| CAM Partition | Total CAM | Used CAM |Available CAM
========|========|=================|=============|=============|==============
1 | 0 | IN-L2 ACL | 1008 | 320 | 688
| | IN-L2 FIB | 32768 | 1132 | 31636
| | IN-L3 ACL | 12288 | 2 | 12286
| | IN-L3 FIB | 262141 | 14 | 262127
| | IN-L3-SysFlow | 2878 | 45 | 2833
| | IN-L3-TrcList | 1024 | 0 | 1024
| | IN-L3-McastFib | 9215 | 0 | 9215
| | IN-L3-Qos | 8192 | 0 | 8192
| | IN-L3-PBR | 1024 | 0 | 1024
| | IN-V6 ACL | 0 | 0 | 0
| | IN-V6 FIB | 0 | 0 | 0
| | IN-V6-SysFlow | 0 | 0 | 0
| | IN-V6-McastFib | 0 | 0 | 0
| | OUT-L2 ACL | 1024 | 0 | 1024
| | OUT-L3 ACL | 1024 | 0 | 1024
| | OUT-V6 ACL | 0 | 0 | 0
1 | 1 | IN-L2 ACL | 320 | 0 | 320
| | IN-L2 FIB | 32768 | 1136 | 31632
| | IN-L3 ACL | 12288 | 2 | 12286
| | IN-L3 FIB | 262141 | 14 | 262127
| | IN-L3-SysFlow | 2878 | 44 | 2834
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