Netgear M4100-50G Manuel D’Utilisation

This command displays the global WRED settings for each CoS queue. If you specify the 
slot/port, the command displays the WRED settings for each CoS queue on the specified 
interface. 

show interfaces random-detect [slot/port]

Differentiated Services (DiffServ) Commands

This section describes the commands you use to configure QOS Differentiated Services 
(DiffServ).

You configure DiffServ in several stages by specifying three DiffServ components:

Class

a. Creating and deleting classes.

b.  Defining match criteria for a class. 

Policy

a. Creating and deleting policies

b.  Associating classes with a policy

c.  Defining policy statements for a policy/class combination

Service

a. Adding and removing a policy to/from an inbound or outbound interface

The DiffServ class defines the packet filtering criteria. The attributes of a DiffServ policy 
define the way the switch processes packets. You can define policy attributes on a per-class 
instance basis. The switch applies these attributes when a match occurs.

Packet processing begins when the switch tests the match criteria for a packet. The switch 
applies a policy to a packet when it finds a class match within that policy.

Privileged EXEC

An interface supports n queues numbered 0 to (n-1). The specific n value is 
platform-dependent

.

The configured minimum threshold the queue depth (as a percentage) where WRED 
starts marking and dropping traffic.

The configured maximum threshold is the queue depth (as a percentage) above which 
WRED marks / drops all traffic.

The configured percentage probability that WRED will mark/drop a packet, when the 
queue depth is at the maximum threshold. (The drop probability increases linearly from 0 
just before the minimum threshold, to this value at the maximum threshold, then goes to 
100% for larger queue depths).