Cam Optimization; Applications For Cam Profiling; Lag Hashing - Dell Force10 C150 Configuration Manual

Figure 11-10. Returning to the default Configuration
FTOS(conf)#cam-profile ?
default
eg-default
ipv4-320k
ipv4-egacl-16k
ipv6-extacl
l2-ipv4-inacl
unified-default
FTOS(conf)#cam-profile default microcode ?
default
lag-hash-align
lag-hash-mpls
FTOS(conf)#cam-profile default microcode default
FTOS(conf)#cam-ipv4flow ?
default
multicast-fib
FTOS(conf)#cam-l2acl ?
default
system-flow

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.

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.
298 | Content Addressable Memory
Enable default CAM profile
Enable eg-default CAM profile
Enable 320K CAM profile
Enable CAM profile with 16K IPv4 egress ACL
Enable CAM profile with
Enable CAM profile with 32K L2 and 28K IPv4 ingress ACL
Enable default unified CAM profile
Enable default microcode
Enable microcode with LAG hash align
Enable microcode with LAG hash MPLS
Reset IPv4flow CAM entries to default setting
Set multicast FIB entries
Reset L2-ACL CAM entries to default setting
Set system flow entries
is supported on platforms
extended ACL
c s