Dell C9000 series, Reference Manual

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Content Addressable Memory (CAM)
You can use Content Addressable Memory (CAM) commands to configure 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 first time, contact Dell Networking Technical
Assistance Center (TAC) for guidance.
Topics:
• CAM Profile Commands
• Unified Forwarding Table Modes
CAM Profile Commands
The CAM profiling feature allows you to partition the CAM to best suit your application. For example:
• Configure more Layer 2 forwarding information base (FIB) entries when the system is deployed as a
switch.
• Configure more Layer 3 FIB entries when the system is deployed as a router.
• Configure 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 flow for LAGs.
• Optimize the virtual local area network (VLAN) ACL Group feature, which permits group VLANs for IP
egress ACLs.
Important Points to Remember
• All line cards within a single system must have the same CAM profile (including CAM sub-region
configurations); this profile must match the system CAM profile (the profile on the primary route
processor module [RPM]).
• The system automatically reconfigures the CAM profile on line cards and the secondary RPM to match
the system CAM profile by saving the correct profile on the card and then rebooting it.
• The CAM configuration is applied to the entire system when you use the CONFIGURATION mode
commands. Save the running-configuration to affect the change.
• When budgeting your CAM allocations for ACLs and quality of service (QoS) configurations, remember
that ACL and QoS rules might consume more than one CAM entry depending on complexity. For
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