Quality of Service Guide QoS and QoS Policies
Edition: 01 3HE 11014 AAAC TQZZA 129
3.7.2 Service Ingress QoS Policies
Service ingress QoS policies define ingress service forwarding class queues and
map flows to those queues. When a service ingress QoS policy is created, it always
has a default ingress traffic queue defined that cannot be deleted. These queues
exist within the definition of the policy. The queues only get created when the policy
is applied to a SAP.
MC-MLPPP SAP egress Defines up to eight forwarding class queues and queue
parameters for traffic classification
Maps one or more forwarding classes to the queues
MC-MLPPP
SAP Egress
QoS Policies
Network Network
interface
Packets are marked using QoS policies on edge devices,
such as the 7705 SAR at access ingress. Invoking a QoS
policy on a network port allows for the packets that match the
policy criteria to be re-marked at network egress for
appropriate CoS handling across the network
Network QoS
Policies
Network
Queue
Adapter card
network
ingress and
egress
Defines forwarding class mappings to network queues Network
Queue QoS
Policies
Slope Adapter card
ports
Enables or disables the high-slope and low-slope
parameters within the egress or ingress queue
Slope Policies
(WRED and
RED)
ATM Traffic
Descriptor
Profile
SAP ingress Defines the expected rates and characteristics of traffic.
Specified traffic parameters are used for policing ATM cells
and for selecting the service category for the per-VC queue.
ATM Traffic
Descriptor
Profiles
SAP egress Defines the expected rates and characteristics of traffic.
Specified traffic parameters are used for scheduling and
shaping ATM cells and for selecting the service category for
the per-VC queue.
ATM Traffic
Descriptor
Profiles
Fabric Profile Adapter card
access and
network
ingress
Defines access and network ingress to-fabric shapers at
user-configurable rates
Fabric Profiles
Shaper Adapter card
ports
Defines dual-rate shaping parameters for a shaper group in
a shaper policy
Shaper
Policies
Table 18 QoS Policy Types and Descriptions (Continued)
Policy Type Applied at… Description Section
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