Service Manual

Usage Information
This feature allows you to determine if the CAM has enough space available before applying the
conguration on an interface.
An input policy map with both Trust and Class-map conguration, 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 classication 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 classication rules.
Estimated CAM per
Port
Indicates the number of free CAM entries required (for the classication 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 conguration 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
For a L2 Input Policy Map pmap_l2, the output must be as follows,
stack-unit|Portpipe|CAM Partition|Available CAM|Estimated CAM|Status
| | | |per Port |(Allowed
ports)
0 0 L2ACL 500 200 Allowed (2)
0 1 L2ACL 100 200 Exception
1 0 L2ACL 1000 200 Allowed (5)
1 1 L2ACL 0 200 Exception
…
…
…
13 1 L2ACL 400 200 Allowed (2)
Dell#
1188
Quality of Service (QoS)