Quality of Service Guide QoS and QoS Policies
Edition: 01 3HE 11014 AAAC TQZZA 135
The user configures the required number of MLPPP classes to use on a bundle. The
forwarding class of the packet, as determined by the ingress QoS classification, is
used to determine the MLPPP class for the packet. The mapping of forwarding class
to MLPPP class is a function of the user-configurable number of MLPPP classes.
The default mapping for a 4-class, 3-class, and 2-class MLPPP bundle is shown in
Table 23.
If one or more forwarding classes are mapped to a queue, the scheduling priority of
the queue is based on the lowest forwarding class mapped to it. For example, if
forwarding classes 0 and 7 are mapped to a queue, the queue is serviced by
MC-MLPPP class 3 in a 4-class bundle model.
3.7.5 Network and Network Queue QoS Policies
The QoS mechanisms within the 7705 SAR are specialized for the type of traffic on
the interface. For customer interfaces, there is service ingress and service egress
traffic, and for network interfaces, there is network ingress and network egress traffic.
The 7705 SAR uses QoS policies applied to a SAP for a service or to a network port
to define the queuing, queue attributes, and QoS marking/interpretation.
The 7705 SAR supports the following types of network and service QoS policies:
• Network QoS Policies
• Network Queue QoS Policies
Table 23 Packet Forwarding Class to MLPPP Class Mapping
FC ID FC Name MLPPP Class
4-class bundle
MLPPP Class
3-class bundle
MLPPP Class
2-class bundle
7NC0 0 0
6H10 0 0
5EF1 1 1
4H21 1 1
3L12 2 1
2AF2 2 1
1L23 2 1
0BE3 2 1
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