configure diffserv replacement code-point

configure diffserv replacement [{qosprofile} qosprofile | priority priority] code-point code_point

Description

Configures the egress Diffserv replacement mapping for either a QoS (Quality of Service) profile or an 802.1p priority value.

Syntax Description

qosprofile	Specifies a QoS profile.
priority	Specifies an 802.1p priority value to map to a code point.
code_point	Specifies a 6-bit value to be used as the replacement DSCP in the IPv4 or IPv6 header.

Default

N/A.

Usage Guidelines

Note

We recommend that you use the qosprofile qosprofile value to configure this parameter.

Egress packets contain the DSCP assigned to the QoS profile, which can be selected by the 802.1p code point or by an ACL (Access Control List). The default 802.1p priority value to QoS profile to DSCP mapping is shown in the following table.

Default QoS Profile-to-802.1p Priority Value-to-Code Point

802.1p Priority Value	Summit Family Switches QoS Profile	DSCP
0	QP1	0
1	QP1	8
2	QP1	16
3	QP1	24
4	QP1	32
5	QP1	40
6	QP1	48
7	QP8	56

Example

The following command specifies that a code point value of 5 should be used to replace the DiffServ (TOS) bits in packets in QP2:

configure diffserv replacement qosprofile qp2 code-point 5

History

This command was first available in ExtremeXOS 11.0.

The ports keyword was first available in ExtremeXOS 12.2.2.

Platform Availability

This command is available on the Summit X450-G2, X460-G2, X670-G2, X770, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.

Published December 2017prev | next

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