Concept Guide

Content Addressable Memory (CAM)

Content addressable memory (CAM) commands are supported on the Dell Networking operating software on the platform.

WARNING: If you are using these features for the rst time, contact Dell Networking Technical Assistance Center (TAC) for

guidance.

Topics:

• CAM Prole Commands

• cam-acl (Conguration)

• cam-optimization

• cam-threshold

• show cam-acl

• show cam-acl-egress

CAM Prole Commands

The CAM proling feature allows you to partition the CAM to best suit your application. For example:

• Congure more Layer 2 forwarding information base (FIB) entries when the system is deployed as a switch.

• Congure more Layer 3 FIB entries when the system is deployed as a router.

• Congure more access control lists (ACLs).

• Optimize the virtual local area network (VLAN) ACL Group feature, which permits group VLANs for IP egress ACLs.

Important Points to Remember

• The Dell Networking Operating System (OS) versions supports CAM allocations.

• The CAM conguration is applied to the entire system when you use the CONFIGURATION mode commands. Save the running-

conguration to aect the change.

• When budgeting your CAM allocations for ACLs and quality of service (QoS) congurations, remember that ACL and QoS rules might

consume more than one CAM entry depending on complexity. For example, transmission control protocol (TCP) and user datagram

protocol (UDP) rules with port range options might require more than one CAM entry.

• After you install a secondary RPM, copy the running-conguration to the startup-conguration so that the new RPM has the correct

CAM prole.

• You MUST save your changes and reboot the system for CAM proling or allocations to take eect.

cam-acl (Conguration)

Select the default CAM allocation settings or recongure a new CAM allocation for Layer 2, IPv4, and IPv6 ACLs, Layer 2 and Layer 3

(IPv4) QoS, Layer 2 Protocol Tunneling (L2PT), IP and MAC source address validation for DHCP, Ethernet Connectivity Fault Management

(CFM) ACLs, and Policy-based Routing (PBR).

Syntax

cam-acl {default | l2acl number ipv4acl number ipv6acl number ipv4qos number

l2qos number l2pt number ipmacacl number [vman-qos | vman-qos—dual— number |

378 Content Addressable Memory (CAM)