Chapter 35: class of service commands, Priority commands (layer 2) – Asante Technologies 40240/40480-10G User Manual

Page 612

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Chapter 35: Class of Service Commands

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. You can set the default priority for each interface, the relative weight of each
queue, and the mapping of frame priority tags to the switch’s priority queues.

Table 35-1 Priority Commands

Command Groups

Function

Priority (Layer 2)

Configures default priority for untagged frames, sets queue weights,

and maps class of service tags to hardware queues

Priority (Layer 3 and 4)

Sets the default priority processing method (CoS, IP Precedence or

DSCP); and maps TCP ports, IP precedence tags, or IP DSCP tags to

class of service values

Page

35-1

35-7

Priority Commands (Layer 2)

This section describes commands used to configure Layer 2 traffic priority on the
switch.

Table 35-2 Priority Commands (Layer 2)

Command Function

queue mode

Sets the queue mode to strict priority or Weighted

Round-Robin (WRR)

switchport priority default Sets a port priority for incoming untagged frames

queue bandwidth

Assigns round-robin weights to the priority queues

queue cos-map

Assigns class-of-service values to the priority queues

show queue mode

Shows the current queue mode

show queue bandwidth

Shows round-robin weights assigned to the priority queues

show queue cos-map

Shows the class-of-service map

show interfaces switchport Displays the administrative and operational status of an

interface

Mode Page

GC 35-2

IC 35-3

IC 35-4

IC 35-4

PE 35-5

PE 35-6

PE 35-6

PE 27-11

35-1

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