Users Guide
Version Description
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
Usage Information
This feature allows you to determine if the CAM has enough space available before applying the conguration on
an interface.
An input policy map with both Trust and Class-map conguration, the Class-map rules are ignored and only the
Trust rule is programmed in the CAM. In such an instance, the Estimated CAM output column contains the size of
the CAM space required for the Trust rule and not the Class-map rule.
The following describes the test cam-usage service-policy input policy-map stack-unit
command shown in the following example.
Field Description
stack-unit Indicates the stack-unit slot number.
Portpipe Indicates the portpipe number.
CAM Partition The CAM space where the rules are added.
Available CAM Indicates the free CAM space, in the partition, for the classication rules.
NOTE: The CAM entries reserved for the default rules are not included in the
Available CAM column; free entries, from the default rules space, cannot be
used as a policy map for the classication rules.
Estimated CAM per
Port
Indicates the number of free CAM entries required (for the classication rules) to apply
the input policy map on a single interface.
NOTE: The CAM entries for the default rule are not included in this column; a
CAM entry for the default rule is always dedicated to a port and is always
available for that interface.
Status (Allowed
ports)
Indicates if the input policy map conguration on an interface belonging to a stack-unit/
port-pipe is successful — Allowed (n) — or not successful — Exception. The allowed
number (n) indicates the number of ports in that port-pipe on which the Policy Map can
be applied successfully.
NOTE: In a Layer 2 Policy Map, IPv4/IPv6 rules are not allowed; therefore, the output contains only
L2ACL CAM partition entries.
Example
Dell# test cam-usage service-policy input pmap_l2 stack-unit all
Stack-unit | Portpipe | Tile | CAM Partition | Available CAM | Estimated CAM per Port | Status
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Quality of Service (QoS) 1301