Content Addressable Memory (CAM)CAM is a type of memory that stores information in the form of a lookup table. On Dell Networking systems, CAM stores Layer 2 (L2) andLayer 3 (L3) forwarding information, access-lists (ACLs), flows, and routing policies.CAM AllocationCAM Allocation for IngressTo allocate the space for regions such has L2 ingress ACL, IPV4 ingress ACL, IPV6 ingress ACL, IPV4 QoS, L2 QoS, PBR, VRF ACL, and soforth, use the cam-acl command in CONFIGURATION mode.The CAM space is allotted in field processor (FP) blocks. The total space allocated must equal 9 FP blocks.The following table lists the default CAM allocation settings.NOTE: There are 12 FP blocks, but the system flow requires three blocks that cannot bereallocated.The following table displays the default CAM allocation settings. To display the default CAM allocation, enter the show cam-acl command.Table 10. Default Cam Allocation SettingsCAM Allocation SettingL2Acl 2Ipv4Acl 2Ipv6Acl 0Ipv4QoS 2L2QoS 2L2PT 0IpMacAcl 1VmanQos 0EtsAcl 0FcoeAcl 0ipv4pbr 0vrfv4Acl 0Openflow 0fedgovacl 0nlbclusteracl 0NOTE: When you reconfigure CAM allocation, use the nlbclusteraclnumber command to change the number of NLB ARP entries.The range is from 0 to 2. The default value is 0. At the default value of 0, eight NLB ARP entries are available for use. Thisplatform supports upto 512 CAM entries. Select 1 to configure 256 entries. Select 2 to configure 1024 entries. Even though youcan perform CAM carving to allocate the maximum number of NLB entries, Dell Networking recommends you to use a maximumof 64 NLB ARP entries.9Content Addressable Memory (CAM) 231
