Configuring Modular Qos Congestion Management - Cisco ASR 9000 Series Configuration Manual

Configuring Modular QoS Congestion
Management
Congestion management controls congestion after it has occurred on a network. Congestion is managed on
Cisco IOS XR software by using packet queuing methods and by shaping the packet flow through use of
traffic regulation mechanisms.
The types of traffic regulation mechanisms supported are:
• Traffic shaping:
◦ Modified Deficit Round Robin (MDRR)
◦ Low-latency queuing (LLQ) with strict priority queuing (PQ)
• Traffic policing:
◦ Color blind
◦ Color-aware (ingress direction)
Line Card, SIP, and SPA Support
This table lists the features that are supported on the ASR 9000 Ethernet Line Cards and SIP 700 for the
ASR 9000.
Feature
Congestion Management Using DEI
Guaranteed and Remaining
Bandwidth
Low-Latency Queueing with Strict
Priority Queueing
Traffic Policing
Traffic Shaping
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide, Release 6.1.x
C H A P T E R
ASR 9000 Ethernet Line Cards
yes
yes
yes
yes
yes
5
SIP 700 for the ASR 9000
yes
yes
yes
yes
yes
51