Netgear Switch M4100-12G-POE+ User Manual Page 451

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Quality of Service (QoS) Commands
451
ProSafe M4100 and M7100 Managed Switches
show interfaces random-detect
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.
Format show interfaces random-detect [slot/port]
Mode
Queue ID
WRED Minimum
Threshold
WRED
Maximum
Threshold
WRED Drop
Probability
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:
1. Class
a. Creating and deleting classes.
b. Defining match criteria for a class.
2. Policy
a. Creating and deleting policies
b. Associating classes with a policy
c. Defining policy statements for a policy/class combination
3. 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
Term Definition
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 traf
fic.
The configured maximum threshold is the queue depth (as a percentage) above which
WRED marks / drops all traf
fic.
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).
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