Dell PowerConnect 2124 Benutzerhandbuch - Seite 18

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Class-of-Service

The switch supports tag-based prioritization following the IEEE 802.1p

standard. The eight levels of IEEE 802.1p priority are mapped to the four

priority queues of each port. For each port, the four priority queues are

scheduled following a Weighted Round Robin scheme.

IEEE 802.1p Priority

1,2

0,3

4,5

6,7

NOTE: The IEEE 802.1p priority information is part of the IEEE 802.1q tag

that also defines VLAN memberships. The switches will ignore the VLAN

membership information in the tag (i.e. all ports are part of all VLANs), but

will preserve the full tag information—including packet priority and

VLAN ID—when transmitting the packet at the destination port.

Gigabit Link

Priority Queue

Scheduling Weight

255