DELL N3000 User Manual

Configuring Class-of-Service

Beginning in Privileged Exec mode, use the following commands in to 

configure the traffic shaping and WRED exponent values for an interface.

Beginning in Privileged Exec mode, use the following commands in to 

configure and view CoS interface queue settings.

Enter Global Configuration mode.

interface

Enter Interface Configuration mode, where 

interface

 

is replaced by gigabitethernet 

unit/slot/port

, 

tengigabitethernet 

unit/slot/port

, or port-channel 

port-channel number

.

 bw 

Sets the upper limit on how much traffic can leave a 

port. The 

bw

 variable represents the shaping 

bandwidth value from 64 to 4294967295 kbps.

exponent

Configure the WRED decay exponent (range: 0–15) 

for the interface. The weighting constant exponent 

determines how much of the previous average queue 

length sample is added to the current average queue 

length. A value of 0 indicates that no weight is given 

to the previous sample and only the instantaneous 

rate is used. A value of 1 indicates that 1/2 of the 

difference between the instantaneous value and the 

previous value is added to the current value; a value of 

2 implies that 1/4 of the difference is added, 3 implies 

1/8 of the difference is added, etc.

Enter Global Configuration mode.

interface

Enter Interface Configuration mode, where 

interface

 is 

replaced by gigabitethernet 

unit/slot/port

, 

tengigabitethernet 

unit/slot/port

., or port-channel 

port-

channel number

.