Configuring Hierarchical Modular QoS on Cisco ASR 9000 Series Routers
Information About Hierarchical QoS
QC-130
Cisco ASR 9000 Series Aggregation Services Router Modular Quality of Service Configuration Guide
OL-23108-02
• Top level—Two parameters only: excess bandwidth and maximum bandwidth
• Middle level—Minimum bandwidth, excess bandwidth, and maximum bandwidth
• Bottom level—Two parameters only: minimum bandwidth or excess bandwidth; and maximum
bandwidth with 128 Mbps upper limit
SIP 700 for the ASR 9000
Queueing is supported at the top and middle levels of hierarchical policies:
• Top level—Two parameters only: excess bandwidth and maximum bandwidth
• Middle level—Minimum bandwidth, excess bandwidth, and maximum bandwidth
• Bottom level—Queueing is not supported
Hierarchical Policing
Hierarchical policing is supported on ingress and egress interfaces. Example 1 shows traffic policing in
a two-level policy. Hierarchical policing allows enforcement of service level agreements (SLAs) while
applying the classification submodel for different QoS classes on the interface. This allows you to police
the interface while applying different classification modes on the interfaces.
Hierarchical Policing on ASR 9000 Ethernet Line Cards
Hierarchical policing is supported with these considerations:
• Ingress and egress interfaces
• Main interfaces and subinterfaces on all encapsulation types
• Two-level hierarchical policies and three-level hierarchical policies
• Police actions
–
In middle and bottom policies
–
Processed from the bottom level of the hierarchy to the top level of the hierarchy
• Policers
–
For bottom-level policers, the top-level policer rate is used as the reference bandwidth
• Policies applied on a bundle interface are replicated to all of the bundle members
• Statistics for all levels in the hierarchy
Hierarchical Policing on the SIP 700 for the ASR 9000
Hierarchical policing is supported with these considerations:
• Ingress and egress interfaces
• Main interfaces and subinterfaces on all encapsulation types
• Two-level hierarchical policies; in three-level policies at middle and bottom levels.
• Police actions
–
In top and bottom policies
–
Processed from the bottom level of the hierarchy to the top level of the hierarchy
To Next Page
Loading...
Need help?
General
