Users Guide
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Content Addressable Memory (CAM)
Content addressable memory (CAM) is supported on Dell Networking OS.
CAM is a type of memory that stores information in the form of a lookup table. On the S5000 systems, CAM stores Layer 2 and
Layer 3 forwarding information, access-lists (ACLs), ows, and routing policies.
CAM Allocation
User-congurable CAM allocation is supported on the S5000 switch in separate partitions for ingress and egress ACLs and QoS
policies.
You can re-allocate memory space:
• For ingress ACLs and QoS policies by using the cam-acl command in CONFIGURATION mode.
• For egress ACLs by using the cam-acl-egress command in CONFIGURATION mode.
CAM space is allotted in FP blocks. The total allocated space for:
• Ingress CAM regions must equal 13 FP blocks.
• Egress CAM regions must equal four FP blocks.
NOTE: CAM consists of 16 FP blocks, but System Flow CAM requires three blocks that cannot be re-allocated.
The following table lists the default CAM allocation settings.
Default Cam Allocation Settings
CAM Allocation
Setting
L2Acl 6
IPV4Acl 4
Ipv6Acl 0
Ipv4Qos 2
L2Qos 1
L2PT 0
IpMacAcl 0
VmanQos 0
VmanDualQos 0
EcfmAcl 0
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Content Addressable Memory (CAM)