25
(Network Control:) 11x000
Low priority: whose DS-field = others values.
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 a high priority port will be
treated as a high priority frame.
