3Com 4210G Series Configuration Manual page 449

Network requirements
As shown in Figure 3-2, the enterprise network of a company interconnects all departments through
Device. The network is described as follows:
The marketing department connects to GigabitEthernet 1/0/1 of Device, which sets the 802.1p
priority of traffic from the marketing department to 3.
The R&D department connects to GigabitEthernet 1/0/2 of Device, which sets the 802.1p priority
of traffic from the R&D department to 4.
The management department connects to GigabitEthernet 1/0/3 of Device, which sets the 802.1p
priority of traffic from the management department to 5.
Configure port priority, 802.1p-to-local priority mapping table, and priority marking to implement the
plan as described in Table
Table 3-1 Configuration plan
Traffic
destination
R&D department >
Public servers management department >
marketing department
management department >
Internet
marketing department > R&D
through HTTP
department
3-1.
Traffic Priority order
Queuing plan
Traffic source
R&D department
Management
department
Marketing
department
R&D department
Management
department
Marketing
department
3-6
Output Queue
queue priority
6 High
4 Medium
2 Low
2 Low
6 High
4 Medium