Concept Guide

Table Of Contents
Content Addressable Memory (CAM)
CAM is a type of memory that stores information in the form of a lookup table. On Dell EMC Networking systems, CAM stores
Layer 2 (L2) and Layer 3 (L3) forwarding information, access-lists (ACLs), flows, and routing policies.
Topics:
CAM Allocation
Test CAM Usage
View CAM-ACL Settings
View CAM Usage
Configuring CAM Threshold and Silence Period
CAM Optimization
Troubleshoot CAM Profiling
CAM Allocation
CAM Allocation for Ingress
To allocate the space for regions such has L2 ingress ACL, IPV4 ingress ACL, IPV6 ingress ACL, IPV4 QoS, L2 QoS, PBR, VRF
ACL, and so forth, use the cam-acl command in CONFIGURATION mode.
The CAM space is allotted in field processor (FP) blocks. The total space allocated must equal FP blocks.
The following table lists the default CAM allocation settings.
NOTE: There are FP blocks, but the system flow requires three blocks that cannot be reallocated.
The following table displays the default CAM allocation settings. To display the default CAM allocation, enter the show
cam-acl command.
Table 12. 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
nlbclusteracl 0
FcoeAcl 0
iscsiOptAcl 0
ipv4pbr 0
10
Content Addressable Memory (CAM) 227