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Using the BayStack 410-24T 10BASE-T Switch
1-58
309985-B Rev 00
Figure 1-35. Port Transmit Queue
As shown in Figure 1-35, the switch provides two transmission queues, a High
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 1-36
). The table indicates the corresponding traffic class that is assigned
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 Figure 1-34
.
For more information about using the Traffic Class Configuration screen, see
“VLAN Configuration” on page 3-40.
BS41030A
User priority
(6)
Port
transmit
queue
High
High priority
packet
Port 5
Traffic
class
7
6
5
4
3
2
1
0
Low