Edge Products ES3528-WDM - Manual (Page 479)

31-1
Chapter 31: 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.
Priority Commands (Layer 2)
This section describes commands used to configure Layer 2 traffic priority on the
switch.
Table 31-1 Priority Commands
Command Groups Function Page
Priority (Layer 2) Configures default priority for untagged frames, sets queue weights,
and maps class of service tags to hardware queues
31-1
Priority (Layer 3 and 4) Maps TCP ports, IP precedence tags, or IP DSCP tags to class of
service values
31-8
Table 31-2 Priority Commands (Layer 2)
Command Function Mode Page
Global Priority Settings
queue mode
Sets the queue mode to strict priority or Weighted
Round-Robin (WRR)
GC 31-2
show queue mode Shows the current queue mode PE 31-2
Port-based Priority Settings
switchport priority default Sets a port priority for incoming untagged frames
IC 31-3
queue bandwidth Assigns round-robin weights to the priority queues IC 31-4
queue cos-map Assigns class-of-service values to the priority queues IC 31-4
show queue bandwidth Shows round-robin weights assigned to the priority queues PE 31-5
show queue cos-map Shows the class-of-service map PE 31-6
show interfaces switchport Displays the administrative and operational status of an
interface
PE 24-11
VLAN-based Priority Settings
vlan priority
Modifies the priority for frames entering a VLAN through a
selected interface
IC 31-6
show vlan based priority Displays the modified priority for frames entering a VLAN PE 31-7