Nortel BayStack 410 24T Using Manual page 86

Using the BayStack 410-24T 10BASE-T Switch
Figure 1-35.
As shown in
transmission queue and a Low transmission queue, for any given port. Frames are
assigned to one of these queues on the basis of user_priority using a traffic class
table. This table is managed by using the Traffic Class Configuration screen
(Figure
to the frame, for each possible user_priority value. If the frame leaves the switch
formatted as a tagged packet, the traffic class assigned to the frame is carried
forward to the next 802.1p capable switch. This allows the packet to carry the
assigned traffic class priority through the network until it reaches its destination.
The following steps show how to use the Traffic Class Configuration screen to
configure the port priority level shown in the example
For more information about using the Traffic Class Configuration screen, see
"VLAN Configuration" on page 3-40.
1-58
User priority
(6)
Port Transmit Queue
Figure 1-35, the switch provides two transmission queues, a High
1-36). The table indicates the corresponding traffic class that is assigned
Traffic
class
7
6
High
5
4
Port
transmit
queue
3
2
Low
1
0
Port 5
High priority
packet
BS41030A
Figure 1-34.
309985-B Rev 00