Alcatel-Lucent 7210 SAS E OS Quality Of Service Manual page 95

Network QoS Policy Commands
network
Syntax [no] network network-policy-id
Context config>qos
Description
This command creates or edits a QoS network policy. The network policy defines the treatment pack-
ets receive as they ingress and egress the access uplink port.
The QoS network policy consists of an ingress and egress component. The ingress component of the
policy defines how Dot1p bits are mapped to internal forwarding class and profile state. The forward-
ing class and profile state define the Per Hop Behavior (PHB) or the QoS treatment through the 7210
SAS. The mapping on each network interface defaults to the mappings defined in the default network
QoS policy until an explicit policy is defined for the network interface. It also defines the rate-limit-
ing parameters for the traffic mapped to each forwarding classes. Traffic mapped to each forwarding
class can be rate limited using separate meters for each uni-cast and multipoint traffic.
The egress component of the network QoS policy defines the queuing parameters associated with
each forwarding class. There are eight queues per port on the egress. Each of the forwarding classes is
associated with a queue on each access uplink port. This queue gets all the parameters defined within
the default network QoS policy 1 until an explicit policy is defined for the network interfaceaccess
uplink port. If the egressing packet originated on an ingress SAP, the parameter is always enabled for
the access uplink port, the egress QoS policy also defines the Dot1p bit marking based on the for-
warding class and the profile state.
The network policy-id 2 cannot be modified or deleted. It defines the default Dot1p-to-FC mapping
and Dot1p-to-FC mapping and default meters for unicast and multipoint meters for the ingress. For
the egress, it defines eight forwarding classes which represent individual queues and the packet
marking criteria.
If a new network policy is created (for instance, policy-id 2), only the default action, default meters
for unicast and multipoint traffic and egress forwarding class parameters are identical to the default
policy. A new network policy does not contain the default Dot1p-to-FC mapping for network QoS
policy of type ip-interface or the DSCP-to-FC mapping (for network QoSpolicy of type port). The
default network policy can be copied (use the copy command) to create a new network policy that
includes the default ingress Dot1p or DSCP to FC mapping (as appropriate). You can modify
parameters or use the no modifier to remove an object from the configuration.
Any changes made to an existing policy, using any of the sub-commands, will be applied immediately
to all access uplink ports where this policy is applied. For this reason, when many changes are
required on a policy, it is highly recommended that the policy be copied to a work area policy-id. That
work-in-progress policy can be modified until complete and then written over the original policy-id.
Use the config qos copy command to maintain policies in this manner.
The no form of this command deletes the network policy. A policy cannot be deleted until it is
removed from all entities where it is applied. The default network policy policy-id 1 cannot be
deleted.
Default
System Default Network Policy 1
7210 SAS-E OS Quality of Service Guide
QoS Commands
Page 95