Configuring Ecn - Cisco ASR 9000 Series Configuration Manual

Configuring Modular QoS Congestion Management

Configuring ECN

ECN helps routers and end hosts to understand that the network is congested and slow down the rate at which
packets are transmitted.
SUMMARY STEPS
1. configure
2. policy-map policy-name
3. class class-name
4. bandwidth [percent |value]
5. random-detect { default | discard-class | dscp | precedence }
6. random-detect ecn
7. exit
8. exit
9. end or commit
10. show policy-map interface type interface-path-id [input | output]
DETAILED STEPS
Command or Action
Step 1 configure
Example:
RP/0/RSP0/CPU0:router# configure
Step 2
policy-map policy-name
Example:
RP/0/RSP0/CPU0:router(config)# policy-map
policy1
Step 3
class class-name
Example:
RP/0/RSP0/CPU0:router(config-pmap)# class
class1
Step 4 bandwidth [percent |value]
Example:
RP/0/RSP0/CPU0:router(config-pmap-c)#
bandwidth 100
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide, Release 6.1.x
Purpose
Enters global configuration mode.
Enters policy map configuration mode.
• Creates or modifies a policy map that can be attached to one
or more interfaces to specify a service policy.
Enters policy map class configuration mode.
• Specifies the name of the class whose policy you want to create
or change.
Specifies or modifies the bandwidth allocated for a class in a specific
policy-map.
Note ECN can be configured with any queuing action, such as ,
bandwidth, shaping, etc.
Configuring ECN
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