Configuring Qos On The Satellite System; Qos On The Satellite System; Limitations - Cisco ASR 9000 Series System Configuration Manual

Configuring QoS on the Satellite System

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QoS on the Satellite System

AutoQoS which automates consistent deployment of QoS features is enabled on the satellite system. All the
user-configured Layer2 and Layer3 QoS features are applied on the ASR9000 and no separate Qos configuration
required for the satellite system. Auto-Qos handles the over-subscription of the ICL links. All other QoS
features, including broadband QoS, on regular ports are supported on satellite ports as well. System congestion
handling between the ASR9000 Series Router and satellite ports is setup to maintain priority and protection.
AutoQoS Provide sufficient differentiation between different classes of traffic that flow on the satellite ICLs
between the ASR9000 Series Router and the Satellite .
The system can support up to 14 unique shape rates for 1G port shapers. 1G ports are represented using a L0
entity in the Traffic Manager (TM) hierarchy. Port shapers are applied at this level. When speed changes on
satellite ports, QOS EA would automatically reconfigure any policy-maps based on underlying satellite ports
speed. However if there are no policies, then the Policy Manager (PM) needs to setup the speed of the port
by calling the port-shaper API (Application Programming Interface). The system shall modify any policies
which are percentage-based when the underlying ports speed changes due to AN. There would be a timelag
for the Autonegotiated speed to be propagated to the policies on the ASR9000 series router and during that
time, packet drops are expected in the satellite device.
For more information about QoS for the satellite system, refer the Cisco ASR 9000 Series Aggregation Services
Router Modular Quality of Service Configuration Guide.

Limitations

• Queueing on an ingress service-policy is not supported on satellite interfaces.
• Only flat and 2-level HQoS policies are supported on satellite interfaces in L2 Fabric and simple ring
QoS on the Satellite System, page 75
QoS Offload Configuration Overview, page 77
How to Configure HQoS on a Satellite, page 95
Configuration Examples for QoS Offload, page 99
topologies.
Cisco ASR 9000 Series Aggregation Services Router nV System Configuration Guide, Release 5.3.x
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