Optional) Setting The Default 802.1P Priority Of An Interface; Creating A Diffserv Domain And Configuring Priority Mapping - Huawei S3700HI Configuration Manual - Qos

S3700HI Ethernet Switches
Configuration Guide - QoS
By default, an interface trusts 802.1p priorities in outer VLAN tags of packets.
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1.3.3 (Optional) Setting the Default 802.1p Priority of an Interface

After the default 802.1p priority of an interface is set, the S3700 performs PHB mapping for the
received untagged packets based on the default 802.1p priority if the interface is configured to
trust 802.1p priorities of packets.
Context
If an interface receives untagged packets, it needs to add the default VLAN ID and 802.1p priority
to the packets before forwarding them.
If an interface is configured to trust 802.1p priorities, the S3700 uses the default 802.1p priority
of the interface when the interface receives untagged packets.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
interface interface-type interface-number
The interface view is displayed.
Step 3 Run:
port priority priority-value
The default 802.1p priority of the interface is set.
By default, the 802.1p priority of an interface is 0.
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1.3.4 Creating a DiffServ Domain and Configuring Priority
Mapping
When the S3700 functions as a border node between a DiffServ domain and other networks,
configure mappings between internal priorities (PHBs and colors) and external priorities (such
as 802.1p priorities, DSCP priorities, and EXP priorities).
Context
A DiffServ domain is composed of a group of interconnected DiffServ nodes that use the same
service policy and PHBs.
In the DiffServ domain, the S3700 maps priorities of incoming packets to PHBs and colors. The
S3700 performs congestion management for packets based on packet PHBs and congestion
avoidance for packets based on packet colors. If packets are sent to a downstream device, the
S3700 binds a DiffServ domain to the outbound interface. In the DiffServ domain, the S3700
maps packet PHBs and colors to priorities so that the downstream device provides QoS services
based on packet priorities.
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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