Dell Force10 MXL Blade - Page 487

Quality of Service (QoS) | 487
Usage
Information
This features allows you to determine if the CAM has enough space available before applying the
configuration on an interface.
An input policy map with both Trust and Class-map configuration, 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
will contain the size of the CAM space required for the Trust rule and not the Class-map rule.
trust
Specify dynamic classification (DSCP) or dot1p to trust.
Syntax
trust {diffserv [fallback]| dot1p [fallback]|}
Parameters
Defaults
none
Command Modes
CONFIGURATION (conf-policy-map-in)
Command
History
Table 25-4. test cam-usage Command Description
Field Description
stack-unit Indicates the stack-unit 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 classification 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, can not be used as a policy map for the
classification rules.
Estimated CAM per Port Indicates the number of free CAM entries required (for the classification
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 configuration 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.
diffserv Enter the keyword diffserv to specify trust of DSCP markings.
dot1p Enter the keyword dot1p to specify trust dot1p configuration.
fallback
Enter this keyword to classify packets according to their DSCP value as a
secondary option in case no match occurs against the configured class maps.
Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module