Network Qos Policy In Access Uplink Mode - Alcatel-Lucent 7210 SAS M OS Quality Of Service Manual

Overview

Network QoS Policy in Access Uplink Mode

The network QoS policy consists of an ingress and egress component. For 7210 SAS-M devices
operating in access-uplink mode, network policy of 'port' is available for use. The ingress
component of the policy defines how Dot1p bits are mapped to internal forwarding class and
profile state (DSCP is not available for use). The forwarding class and profile state define the Per
Hop Behavior (PHB) or the QoS treatment through the system. The mapping on each access
uplink port defaults to the mappings defined in the default network QoS policy until an explicit
policy is defined for the access uplink ports. It also defines the rate-limiting parameters for the
traffic mapped to each forwarding classes. Traffic mapped to each forwarding class can be rate
limited using separate meters for each unicast and multipoint traffic.
The egress component of the network QoS policy defines the Dot1p bits marking values
associated with each forwarding class. By default, network qos policy remarking is always
disabled. If the egressing packet originated on an ingress SAP, the egress QoS policy also defines
the Dot1p bit marking based on the forwarding class and the profile state. The default map of FC-
Dot1p marking is as shown in default network qos policy of type 'port', policy-id 1. All non-
default network qos policies inherits the FC-Dot1p map.
Network policy-id 1 exists as the default policy and is applied to access uplink ports.The network
policy-id 1 cannot be modified or deleted. It defines the default Dot1p-to-FC mapping and
Dot1pto-FC mapping and default meters for unicast and multipoint meters for the ingress. For the
egress, it defines eight forwarding classes and the packet marking criteria.
New (non-default) network policy parameters can be modified. The no form of the command
reverts the object to the default values.
Changes made to a policy are applied immediately to all IP interface where the policy is applied.
For this reason, when a policy requires several changes, it is recommended that you copy the
policy to a work area policy-id. The work-in-progress copy can be modified until all the changes
are made and then the original policy-id can be overwritten with the config qos copy command.
For information about the tasks and commands necessary to access the command line interface
and to configure and maintain your devices, refer to CLI Usage chapter in the OS Basic System
Configuration Guide.
Page 110 7210 SAS M OS Quality of Service Guide