Alcatel-Lucent 7950 Quality Of Service Manual page 112

Network QoS Policy Commands
Network QoS Policy Commands
network
Syntax network network-policy-id [create]
no network network-policy-id
Context config>qos
Description
This command creates or edits a QoS network policy. The network policy defines the treatment IP
or MPLS packets receive as they ingress and egress the network port.
The QoS network policy consists of an ingress and egress component. The ingress component of
the policy defines how DiffServ code points and MPLS EXP bits are mapped to internal
forwarding class and profile state. The forwarding class and profile state define the Per Hop
Behavior (PHB) or the QoS treatment through the router. 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.
The egress component of the network QoS policy defines the queuing parameters associated with
each forwarding class. Each of the forwarding classes defined within the system automatically
creates a queue on each network interface. 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, or the remarking parameter is
defined for the egress interface, the egress QoS policy also defines the IP DSCP or MPLS EXP bit
marking based on the forwarding class and the profile state.
Network policy-id 1 exists as the default policy that is applied to all network interfaces by default.
The network policy-id 1 cannot be modified or deleted. It defines the default DSCP-to-FC
mapping and MPLS EXP-to-FC mapping and for the ingress. For the egress, it defines six
forwarding classes which represent individual queues and the packet marking criteria.
Network policy-id 1 exists as the default policy that is applied to all network ports by default. This
default policy cannot be modified or deleted. It defined the default DSCP-to-FC mapping and
default unicast meters for ingress IP traffic. For the egress, if defines the forwarding class to Dot1p
and DSCP values and the packet marking criteria.
If a new network policy is created (for instance, policy-id 3), only the default action and egress
forwarding class parameters are identical to the default policy. A new network policy does not
contain the default DSCP-to-FC and MPLS-EXP-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 DSCP-to-FC and MPLS EXP-to-FC mapping (as appropriate). You
can modify parameters or use the no modifier to remove an object from the configuration.
Page 112 7950 XRS Quality of Service Guide