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Configuring Modular Quality of Service Congestion Management on Cisco IOS XR Software
Contents
QC-30
Cisco IOS XR Modular Quality of Service Configuration Guide
Feature History for Configuring Modular QoS Congestion Management on Cisco IOS XR Software Contents
Contents
• Prerequisites for Configuring QoS Congestion Management on Cisco IOS XR Software,
page QC-30
• Information About Configuring QoS Congestion Management on Cisco IOS XR Software,
page QC-30
• How to Configure QoS Congestion Management on Cisco IOS XR Software, page QC-37
• Configuration Examples for Configuring QoS Congestion Management on Cisco IOS XR Software,
page QC-47
• Where to Go Next, page QC-49
• Additional References, page QC-50
Prerequisites for Configuring QoS Congestion Management on
Cisco IOS XR Software
The following prerequisites are required for configuring QoS congestion management on your network:
• You must be in a user group associated with a task group that includes the proper task IDs for QoS
commands. Task IDs for commands are listed in the Cisco IOS XR Task ID Reference Guide.
For detailed information about user groups and task IDs, see the Configuring AAA Services on
Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.
• You must be familiar with Cisco IOS QoS configuration tasks and concepts.
Information About Configuring QoS Congestion Management on
Cisco IOS XR Software
To implement QoS congestion management features in this document, you must understand the
following concepts:
• Congestion Management Overview, page QC-31
• Modified Deficit Round Robin, page QC-31
Release Modification
Release 2.0 This feature was introduced on the Cisco CRS-1.
Release 3.0 No modification.
Release 3.2 This feature was first supported on the Cisco XR 12000 Series Router with
the exception of the following:
Two-rate policer and two-token bucket algorithm.
The pir and violate-action keywords for the police command.
Packet-by-packet MDRR scheduling mechanism.
Added configuration examples.