SMC Networks SMC6724L3 Instrukcja Użytkownika Pobierz pdf (Strona 168)

100

101

ONFIGURING

THE

WITCH

3-120

Class of Service Configuration

Class of Service (CoS) allows you to specify which data packets have

greater precedence when traffic is buffered in the switch due to

congestion. This switch supports CoS with four priority queues for each

port. Data packets in a port’s high-priority queue will be transmitted before

those in the lower-priority queues. You can set the default priority for each

interface, and configure the mapping of frame priority tags to the switch’s

priority queues.

Setting the Default Priority for Interfaces

You can specify the default port priority for each interface on the switch.

All untagged packets entering the switch are tagged with the specified

default port priority, and then sorted into the appropriate priority queue at

the output port.

Command Usage

• This switch provides four priority 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.

Command Attributes

• 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.

* CLI displays this information as “Priority for untagged traffic.”

1 2 ... 163 164 165 166 167 168 169 170 171 172 173 ... 617 618

Komentarze do niniejszej Instrukcji

Brak uwag

SMC Networks SMC6724L3 Instrukcja Użytkownika Strona 168

Komentarze do niniejszej Instrukcji

Powiązane produkty i podręczniki dla Oprogramowanie SMC Networks SMC6724L3