Administrator Guide

Example of Syslog message on CAM usage
Following table shows few possible scenarios during which the syslog message appear on re-configuring the CAM usage threshold value.
Consider if the last CAM threshold was set to 90 percent and now you re-configure the CAM threshold to 80. And, if the current CAM
usage is 85 percent, then the system displays the syslog message saying that the CAM usage is above the configured CAM threshold
value.
Table 10. Possible Scenarios of Syslog Warning
Old CAM
Threshold
New CAM Threshold Current CAM
Usage
Syslog
90 80 85
DellEMC(conf)#Nov 5 19:55:12 %S6000:0
%ACL_AGENT-4-
ACL_AGENT_CAM_USAGE_OVER_THE_THRESHOLD: The
Ipv4Acl cam region on stack-unit 0 Portpipe
0 Pipeline 0 is more than 80% Full.
90 95 91
DellEMC(conf)#Nov 5 19:55:12 %S6000:0
%ACL_AGENT-4-
ACL_AGENT_CAM_USAGE_BELOW_THE_THRESHOLD: The
cam-usage of Ipv4Acl cam region on stack-
unit 0 Portpipe 0 Pipeline 0 is below 95%.
98 100 100 No syslog
95 80 10 No syslog
92 90 89 No syslog
Return to the Default CAM Configuration
Return to the default CAM Profile, microcode, IPv4Flow, or Layer 2 ACL configuration using the keyword default from EXEC Privilege
mode or CONFIGURATION mode, as shown in the following example.
Example of the cam-profile default Command
Dell(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
Dell(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
Dell(conf)#cam-profile default microcode default
Dell(conf)#cam-ipv4flow ?
default Reset IPv4flow CAM entries to default setting
multicast-fib Set multicast FIB entries
Dell(conf)#cam-l2acl ?
default Reset L2-ACL CAM entries to default setting
system-flow Set system flow entries
CAM Optimization
The cam-optimization command allows you to optimize CAM utilization for QoS entries by minimizing the amount of required policy-
map CAM space.
When you enable this command, 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 is used). When you disable
this command, the system behaves as described in this chapter.
Content Addressable Memory (CAM)
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