3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring to Trust Packet Priority 857
Configuration Examples Network requirement
■ All departments in the enterprise network are interconnected through Switch.
The network creates different VLANs for different departments.
■ It is required that Switch assign local precedence values to packets through
priority mapping on the incoming port.
■ The default priority mapping tables of Switch are adopted in priority mapping.
Network diagram
Figure 253 Network diagram for priority trust mode configuration
Configuration procedure
# Enter system view
<Sysname> system-view
# Enter 802.1p-precedence-to-local-precedence mapping table view to modify the
mapping table parameters.
[Sysname] qos map-table dot1p-lp
[Sysname-maptbl-dot1p-lp] import 0 1 export 0
[Sysname-maptbl-dot1p-lp] import 2 3 export 1
[Sysname-maptbl-dot1p-lp] import 4 5 export 2
[Sysname-maptbl-dot1p-lp] import 6 7 export 3
[Sysname-maptbl-dot1p-lp] quit
# Configure to trust 802.1p precedence on Ethernet 1/1/1.
[Sysname] interface ethernet 1/1/1
[Sysname-Ethernet1/1/1] qos trust dot1p
[Sysname-Ethernet1/1/1] quit
# Configure to trust 802.1p precedence on Ethernet 1/1/2.
[Sysname] interface ethernet 1/1/2
[Sysname-Ethernet1/1/2] qos trust dot1p
[Sysname-Ethernet1/1/2] quit