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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 13

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Applicable Scenario

Applicable Scenario

Networking Requirements

As shown in Figure 13-8, data center users obtain voice, video, and data services from the servers. Service flows are transmitted from the servers to users across the network through SwitchA and SwitchB. Voice, video, and data services have QoS requirements in descending order of priority. Devices on the network must differentiate priorities of the three services to provide differentiated services.

Packets carry different precedence fields depending on the network type. For example, packets carry the 802.1p field on a Layer 2 network and the DSCP field on a Layer 3 network. When packets arrive at a device, the device maps packet priorities to CoS values and colors, and provides different QoS services according to the CoS values and colors. When packets leave the device, the device can re-mark packet priorities according to CoS values and colors so that the downstream device can provide differentiated services based on re-marked priorities.

Figure 13-8 Networking of priority mapping

Service Deployment
  • Configure a traffic policy in the inbound direction of SwitchA to re-mark different 802.1p priorities for packets of voice, video, and data services. The priorities of voice, video, and data services are in descending order.
  • Configure SwitchB to map 802.1p priorities to CoS values and colors in the inbound direction, so that SwitchB provides differentiated services according to the CoS values and colors.
  • Configure SwitchB to re-mark DSCP priorities according to CoS values and colors in the outbound direction, so that the Layer 3 network provides differentiated services based on DSCP priorities.
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Updated: 2019-12-13

Document ID: EDOC1000041694

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