Planet IGSW-2840, Руководство пользователя

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User’s Manual of IGSW-2840
230
4.10.1.1 Port Priority Configuration
You can specify the default port priority for each interface on the Industrial Managed Switch. All untagged packets entering the
Industrial Managed Switch are tagged with the specified default port priority, and then sorted into the appropriate egress queue
at the output port.
•
This Industrial Managed Switch provides four egress queues for each port. It uses Weighted Round Robin to prevent
head-of-queue blockage.
•
The default priority applies for an untagged frame received on a port set to accept all frame types (i.e., receives both
untagged and tagged frames). This priority does not apply to IEEE 802.1Q VLAN tagged frames. If the incoming frame is an
IEEE 802.1Q VLAN tagged frame, the IEEE 802.1p User Priority bits will be used.
•
If the output port is an untagged member of the associated VLAN, these frames are stripped of all VLAN tags prior to
transmission.
Figure 4-10-1 Default Port Priority screenshot
The page includes the following fields:
Object Description
•
Port Numeric identifier for the Industrial Managed Switch port.
•
Default Priority The priority that is assigned to untagged frames received on the specified
interface. Range: 0-7;
Default: 0
•
Number of Egress
Traffic Classes
The number of queue buffers provided for each port.
•
Trunk The trunk identifier. (Port Priority Configuration only)