Enterasys Networks 9034313-07 manual Set cos settings, Priority priority, Tos‐value tos‐value

set cos settings

set cos settings

Use this command to configure a Class of Service entry in the CoS settings table.

Syntax

set cos settings cos-indexpriority priority [tos-value tos-value][irl-reference

irl-reference]

Parameters

cos‐index	Specifies a Class of Service entry. Valid values are 0 to 255.
priority priority	Specifies an 802.1d priority value. Valid values are 0 to 7, with 0 being the
	lowest priority. See Usage section below for more information.
tos‐value tos‐value	(Optional) Specifies a Type of Service value. Valid values are 0 to 255. See
	Usage section below for more information.
irl‐reference	(Optional) Set the inbound rate limiter associated with this entry. Valid
irl‐reference	values are 0 to 99. See Usage section below for more information.

Defaults

If no optional parameters are specified, none will be applied.

Mode

Switch command, read‐write.

Usage

The CoS settings table takes individual class of service features and displays them as belonging to a CoS entry. Essentially, it is used for CoS feature assignment. Each class of service entry consists of an index, 802.1p priority, an optional ToS value, and an IRL reference.

•CoS Index

Indexes are unique identifiers for each CoS setting. CoS indexes 0 through 7 are created by default and mapped directly to 802.1p priority for backwards compatibility. These entries cannot be removed, and 802.1p priority values cannot be changed. When CoS is enabled, indexes are assigned. Up to 256 CoS indexes or entries can be configured.

•Priority

802.1p priority can be applied per CoS index. For each new CoS index created, the user has the option to assign an 802.1p priority value 0 to 7 for the class of service. CoS indexes 0 through 7 map directly to 802.1p priorities and cannot be changed as they exist for backward compatibility.

•ToS

This value can be set per class of service, but is not required. When a frame is assigned to a class of service for which this value is configured, the ToS field of the incoming IP packet will be overwritten to the user‐defined value. All but the last two bits of the ToS field are rewritable. ToS can be set for CoS indexes 0 through 7.

•IRL Reference

The CoS IRL reference field is optional, as rate limits are not required. The IRL reference does not assign an inbound rate limit but points to the CoS IRL Reference Mapping Table. This reference may be thought of as the virtual rate limiter that will assign the physical rate limiter defined by the IRL Reference Mapping Table.

11-22 Policy Classification Configuration