Specifications are subject to change without notice.
© 2004 by SURECOM Technology Corporation. All rights reserved.
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2D
•802.1p priority
When 802.1p tag priority is applied, the switch can recognize the 802.1Q VLAN tag frames and
extract the 3-bit User_Priority information from the VLAN tag. The default setting of the threshold
of User_Priority is 3. Therefore, VLAN tagged frames with User_Priority value = 4~7 will be
treated as high priority frames, and treat other User_Priority values = 0~3 as low priority frames.
•Adapted Flow Control Ability
The switch can automatically turn off 802.3x flow control and Back pressure flow control for
1~2 seconds whenever the port receives a high priority frames. The flow control is re-enabled when
no priority frames are received for 1~2 seconds.
•Priority Weighted Ratio
This switch supports 2 level priority queues. The queue service rate is based on the packet based
Weighted Round Robin algorithm. The packet based service weight ratio of high-priority and
low-priority queuing can be set as 4:1, 8:1, 16:1 or "Always high priority first". The default
setting is 16:1.
•Force Set High Priority Port
When Port based priority is applied, any packet received from the high priority port will be
treated as a high priority frame.
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