Queue Sharing and Redirection
Quality of Service Guide 411
Ingress Packet Classification
When a PW is redirected to use a policer queue-group, the classification of the packet for the
purpose of FC and profile determination is performed according to default classification rule
or the QoS filters defined in the ingress context of the network QoS policy applied to the PW.
This is true regardless if an instance of the named policer queue-group exists on the ingress
FP the PW packet is received on. The user can apply a QoS filter matching the dot1.p in the
VLAN tag corresponding to the Ethernet port encapsulation, the EXP in the outer label when
the tunnel is an LSP, the DSCP in the IP header if the tunnel encapsulation is GRE, and the
DSCP in the payload’s IP header if the user enabled the ler-use-dscp option and the PW
terminates in IES or VPRN service (spoke-interface).
When the policer queue-group name the PW is redirected does not exist, the redirection
command is failed. In this case, the packet classification is performed according to default
classification rule or the QoS filters defined in the ingress context of the network QoS policy
applied to the network IP interface the PW packet is received on.
Egress PW Shaping using Spoke-SDP Forwarding Class-
Based Redirection
Feature Configuration
The user applies a network QoS policy to the egress context of a spoke-sdp to redirect the
mapping of a Forwarding Class (FC) to a policer and/or a queue part of a queue-group
instance created in the egress of a network port.
config>service>vprn>interface>spoke-sdp>egress>qos network-policy-id port-redirect-
group queue-group-name instance instance-id
The queue-group queues or policers are instantiated at egress port, one instance per network
port and per link of LAG network port and are used to service packets of this spoke-SDP,
which are forwarded over any network IP interface on this port.
config>port>ethernet>network>egress>queue-group queue-group-name instance
instance-id
In the egress context of the network QoS policy, the user defines the mapping of a FC to a
policer-id or a queue-id and instructs the code to redirect the mapping to the queue or policer
of the same ID in some queue-group. However, the queue-group is explicitly named only at
the time the network QoS policy is applied to the spoke-SDP as shown above with the
example of the VPRN service. The command is as follows:
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