Setup Guide

View CAM Usage
View the amount of CAM space available, used, and remaining in each partition (including IPv4 and IPv6 Flow and Layer 2 ACL sub-
partitions) using the
show cam-usage command in EXEC Privilege mode
The following output shows CAM blocks usage for Layer 2 and Layer 3 ACLs and other processes that use CAM space:
In S5048F-ON, ACL lters support more than 200 egress ACL rules.
Example of the show cam-usage Command
DellEMC#show cam-usage
Stackunit|Portpipe|Pipeline| CAM Partition | Total CAM | Used CAM |Available CAM
========|========|========|=================|=============|=============|==============
1 | 0 | 0 | IN-L2 ACL | 0 | 0 | 0
| | | IN-L3 ACL | 512 | 1 | 511
| | | IN-L3 ECMP GRP | 2048 | 0 | 2048
| | | IN-V6 ACL | 256 | 0 | 256
| | | IN-NLB ACL | 0 | 0 | 0
| | | IPMAC ACL | 256 | 0 | 256
| | | IN-L3-UDFMIRRACL| 256 | 3 | 253
(IN-V6-MIRR ACL)
| | | IN-L3-MIRR ACL | 0 | 0 | 0
| | | OUT-L2 ACL | 206 | 12 | 194
| | | OUT-L3 ACL | 202 | 8 | 194
| | | OUT-V6 ACL | 202 | 3 | 199
| | | IN-L3 QOS | 0 | 0 | 0
| | | IN-L3 FIB | 90112 | 5 | 90107
Codes: * - cam usage is above 90%.
CAM Optimization
When you enable the CAM optimization, if a Policy Map containing classication 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 one FP entry is used). When you
disable this command, the system behaves as described in this chapter.
Troubleshoot CAM Proling
The following section describes CAM proling troubleshooting.
CAM Prole Mismatches
The CAM prole on all cards must match the system prole. In most cases, the system corrects mismatches by copying the correct prole
to the card, and rebooting the card. If three resets do not bring up the card, the system displays an error message. In this case, manually
adjust the CAM conguration on the card to match the system conguration.
To prevent mismatches, Dell EMC Networking recommends the following:
• Use the eg-default CAM prole in a chassis that has only EG Series line cards. If this prole is used in a chassis with non-EG line cards,
the non-EG line cards enter a problem state.
• Before moving a card to a new chassis, change the CAM prole on a card to match the new system prole.
• After installing a secondary RPM into a chassis, copy the running-conguration to the startup-conguration.
• Change to the default prole if downgrading to a Dell EMC Networking OS version earlier than 6.3.1.1.
• Use the CONFIGURATION mode commands so that the prole is change throughout the system.
• Use the EXEC Privilege mode commands to match the prole of a component to the prole of the target system.
Content Addressable Memory (CAM)
253