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Figure 11-10. Returning to the default Configuration
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.
• When an IP header is present, hashing is based on IP 3 tuple (source IP address, destination IP address,
and IP protocol).
• If an IP header is not found after the 5th label, hashing is based on the MPLS labels.
FTOS(conf)#cam-profile ?
default Enable default CAM profile
eg-default Enable eg-default CAM profile
ipv4-320k Enable 320K CAM profile
ipv4-egacl-16k Enable CAM profile with 16K IPv4 egress ACL
ipv6-extacl Enable CAM profile with extended ACL
l2-ipv4-inacl Enable CAM profile with 32K L2 and 28K IPv4 ingress ACL
unified-default Enable default unified CAM profile
FTOS(conf)#cam-profile default microcode ?
default Enable default microcode
lag-hash-align Enable microcode with LAG hash align
lag-hash-mpls Enable microcode with LAG hash MPLS
FTOS(conf)#cam-profile default microcode default
FTOS(conf)#cam-ipv4flow ?
default Reset IPv4flow CAM entries to default setting
multicast-fib Set multicast FIB entries
FTOS(conf)#cam-l2acl ?
default Reset L2-ACL CAM entries to default setting
system-flow Set system flow entries