Differentiated services or DiffServ is a computer networking architecture that specifies a mechanism for classifying and managing network traffic and providing quality of service (QoS) on modern IP networks.

DSCP 主要关注转发路径组件。在报文转发路径、差异化业务通过将包含在IP包头字段中的代码点（codepoint）映射到每个节点的特定转发处理或每跳行为(PHB, per-hop behave)。

Configure the DSCP policies for the codepoints you want to use. Figure 1 Assigning priorities to the selected DSCPs. Assign the DSCP policies to the selected TCP/UDP port applications and display the result. Figure 2 Configuring a DSCP policy for global TCP/UDP port classifiers

Configure the switch to assign the DSCP policy to packets with the specified TCP or UDP port number or range of port numbers. qos [udp-port | tcp-port ] [ipv4 | ipv6 | ip-all] [ port-number | range start end ] dscp codepoint

2023年5月23日 · DSCP is a mechanism used for classifying network traffic on IP networks. It uses the 6-bit Differentiated Services Field (DS or DSCP field) in the IP header for packet classification purposes. Using Layer 3 classification enables you to maintain the same classification semantics beyond local network, across routers.

2024年9月5日 · This document describes how to set the Differentiated Services Code Point (DSCP) values in Quality of Service (QoS) configurations on a Cisco router.

2024年12月31日 · DSCP是IP数据包中的一个服务质量标记字段的值，用于定义特定的服务类型信息。 它通过在IP报头中设置特定的代码点来标识流量的优先级，这些代码点允许网络设备根据流量的优先级进行不同的处理，从而实现QoS的保证。 DSCP使用6个比特位（bit）来表示，其值的范围为0到63。 这些比特位被用来编码不同的优先级和服务类型。 每个DSCP编码值都被映射到一个已定义的PHB（Per-Hop-Behavior，每跳行为）标识码，该标识码定义了数据包在网络中每经 …

2020年4月16日 · FortiGate Differentiated Services feature can be used to change the DSCP (Differentiated Services Code Point) value for all packets accepted by a policy. The network can use these DSCP values to classify, mark, shape, and …

2023年1月24日 · To implement Quality of Service, you should configure identical port ranges for audio, video, and application sharing on your Conferencing, Application, and Mediation servers; furthermore, those port ranges must not overlap in any way. To use an example, suppose you use ports 10000 through 10999 for video on your Conferencing servers.

2024年4月17日 · To determine how DSCP tagging should be applied, the switch uses QoS network rules. QoS network rules are user defined and processed in order from top to bottom. A rule can specify any combination of VLAN, protocol, source port, or destination port. Each rule maps to a DSCP setting which could be to trust incoming DSCP tags or set the DSCP tag.