Cisco ASR 9000 Series Service Configuration Guide

Configuring Modular QoS Congestion Avoidance on Cisco ASR 9000 Series Routers
How to Configure Modular QoS Congestion Avoidance on Cisco ASR 9000 Series Routers
QC-83
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
Note The default queue-limit is set to bytes of 100 ms of queue bandwidth. The following formula is used to
calculate the default queue limit (in bytes):
bytes = (100 ms / 1000 ms) * queue_bandwidth kbps)) / 8
Restrictions
• When configuring the queue-limit command in a class, you must configure one of the following
commands: priority, shape average, bandwidth, or bandwidth remaining, except for the default
class.
SUMMARY STEPS
1. configure
2. policy-map policy-name
3. class class-name
4. queue-limit value [units]
5. class class-name
6. bandwidth {bandwidth [units] | percent value}
or
bandwidth remaining [percent value | ratio ratio-value]
7. exit
8. exit
9. interface type interface-path-id
10. service-policy {input | output} policy-map
11. end
or
commit
DETAILED STEPS
Command or Action Purpose
Step 1
configure
Example:
RP/0/RSP0/CPU0:router# configure
Enters global configuration mode.
Step 2
policy-map policy-name
Example:
RP/0/RSP0/CPU0:router(config)# policy-map
policy1
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.

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model