Users Guide

Content Addressable Memory (CAM)
You can use content addressable memory (CAM) commands to congure the amount of memory allocated to CAM memory partitions.
NOTE: Not all CAM commands are supported on all platforms. Be sure to note the platform when looking for a command.
WARNING: If you are using these features for the rst time, contact Dell Networking Technical Assistance Center (TAC) for
guidance.
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) (when IPv6 is not employed).
• Hash multi-protocol label switching (MPLS) packets based on source and destination IP addresses for link aggregation groups (LAGs).
• Hash based on bidirectional ow for LAGs.
• Optimize the virtual local area network (VLAN) ACL Group feature, which permits group VLANs for IP egress ACLs.
Important Points to Remember
• Dell Networking OS supports CAM allocations on the C-Series and S-Series.
• All line cards within a single system must have the same CAM prole (including CAM sub-region congurations); this prole must match
the system CAM prole (the prole on the primary route processor module [RPM]).
• Dell Networking OS automatically recongures the CAM prole on line cards and the secondary RPM to match the system CAM prole
by saving the correct prole on the card and then rebooting it.
• 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 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) (when IPv6 is not employed).
• Hash multi-protocol label switching (MPLS) packets based on source and destination IP addresses for link aggregation groups (LAGs).
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