DiffServ uses a 6-bit differentiated services code point (DSCP) in the 6-bit differentiated services field (DS field) in the IP header for packet classification purposes. The DS field, together with the ECN field, replaces the outdated IPv4 TOS field. [1]

Mar 8, 2022 · I read from this website to understand DSCP and it's corresponding IP precedence value. For example DSCP value is '000 000' which Drop Probability is N/A (never happen) and it's Equivalent IP Precedence Value is '000'.

Nov 15, 2024 · Differentiated Services Field Codepoints (DSCP) Last Updated 2024-11-15 Note The Differentiated Services (Diffserv) architecture specifies use of the DS field in the IPv4 and IPv6 packet headers to carry one of 64 distict differentiated services field codepoint (DSCP) values. The codepoint space is divided into three pools for the purpose of

3. Differentiated Services Field Definition A replacement header field, called the DS field, is defined, which is intended to supersede the existing definitions of the IPv4 TOS octet [RFC791] and the IPv6 Traffic Class octet [IPv6]. Six bits of the DS field are used as a codepoint (DSCP) to select the PHB a packet experiences at each node.

Feb 14, 2016 · Classification can be based on IPv6 precedence, differentiated services control point (DSCP), and other IPv6 protocol-specific values that can be specified in IPv6 access lists in addition to other non-IPv6 protocol specific values such as COS, packet length, and QOS group.

Class-of-service (CoS) processing for IPv6 traffic uses the IPv6 DiffServ code point (DSCP) value. The IPv6 DSCP value is the first six bits in the 8-bit Traffic Class field of the IPv6 header.

DSCP field in the header of IPv6, and IPv4 packets. This paper presents a method for adjusting the level of services offered by the network with quality of service differentiation for the...

The following configuration example explains in detail how to set the DSCP and MPLS EXP bits independently on IPv6 packets.

Jun 27, 2018 · DSCP would be part of the IP header as such is processed by layer-3 interfaces. As you have an L2 Ethernet interface you should use CoS to classify your traffic as it doesn't care about nor can it manipulate the IP header. This document will give you a good overview of how to use CoS in your class-maps and policy-maps.

Mar 31, 2025 · Verifying IPv6 Non-AVC QoS To verify the DSCP values for IPv6 packets, IPv6 packets that are dropped, and the policing of IPv6 traffic, use the show policy-map command: The following is a sample output of the show command that verifies the DSCP value for an IPv6 packet: Device# show policy-map 1 policymaps Policy Map Set-dscp type:qos client ...