Class of service commands, Priority commands (layer 2), 40 c – LevelOne GTL-2691 User Manual

Page 1155: Lass, Ervice, Ommands, Table 132: priority commands, Table 133: priority commands (layer 2)

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40

C

LASS

OF

S

ERVICE

C

OMMANDS

The commands described in this section allow you to specify which data

packets have greater precedence when traffic is buffered in the switch due

to congestion. This switch supports CoS with eight priority queues for each

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

those in the lower-priority queues. The default priority can be set for each
interface, also the queue service mode and the mapping of frame priority

tags to the switch's priority queues can be configured.

P

RIORITY

C

OMMANDS

(L

AYER

2)

This section describes commands used to configure Layer 2 traffic priority

on the switch.

Table 132: Priority Commands

Command Group

Function

Priority Commands

(Layer 2)

Configures the queue mode, queue weights, and default priority

for untagged frames

Priority Commands

(Layer 3 and 4)

Maps TCP ports, IP precedence tags, or IP DSCP tags to class of

service values

Table 133: Priority Commands (Layer 2)

Command

Function

Mode

queue cos-map

Assigns class-of-service values to the priority queues

IC

queue mode

Sets the queue mode to strict priority, Weighted

Round-Robin (WRR), or a combination of strict and

weighted queuing

IC

queue weight

Assigns round-robin weights to the priority queues

IC

switchport priority default

Sets a port priority for incoming untagged frames

IC

show interfaces

switchport

Displays the administrative and operational status of

an interface

PE

show queue cos-map

Shows the class-of-service map

PE

show queue mode

Shows the current queue mode

PE

show queue weight

Shows weights assigned to the weighted queues

PE

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