The user applies a network QoS policy to the ingress context of a spoke-SDP to redirect the mapping of a Forwarding Class (FC) to a policer defined in a queue-group template that is instantiated on the ingress Forwarding Plane (FP) where the PW packets are received (this feature applies to both spoke-SDP and mesh-SDP. Spoke-SDP is used throughout for ease of reading).
config>service>vprn>if>spoke-sdp>ingress>qos network-policy-id fp-redirect-group queue-group-name instance instance-id
Here, refer to a queue-group containing policers as a policer queue-group. The user must instantiate this queue-group by applying the following command:
config>card>fp>ingress>network>queue-group queue-group-name instance instance-id
The policers are instantiated at ingress FP, one instance per destination tap, and are used to service packets of this spoke-SDP that are received on any port on the FP to support a network IP interface on LAG and on any network IP interface to support ECMP on the network IP interface and LSP reroutes to a different network IP interface on the same FP.
In the ingress context of the network QoS policy, the user defines the mapping of an FC to a policer-id and instructs the code to redirect the mapping to the policer of the same ID in some queue-group:
config>qos>network>ingress>fc>fp-redirect-group policer policer-id config>qos>network>ingress>fc>fp-redirect-group broadcast-policer policer-id config>qos>network>ingress>fc>fp-redirect-group unknown-policer policer-id config>qos>network>ingress>fc>fp-redirect-group mcast-policer policer-id
The user can redirect the unicast, broadcast, unknown, and multicast packets of an FC to different policers to allow for different policing rates for these packet types (broadcast and unknown are only applicable to VPLS services). However, the queue-group is explicitly named only at the time the network QoS policy is applied to the spoke-SDP, as shown in the preceding example of the VPRN service.
When the FC of a PW is redirected to use a policer in the named queue-group, the policer feeds the existing per-FP ingress shared queues referred to as policer-output-queues. These queues are shared by both access and network policers configured on the same ingress FP. The shared queue parameters are configurable using the following command:
config>qos>shared-queue policer-output-queues
The CLI configuration in this section uses a spoke-SDP defined in the context of a VPRN interface. However, the PW shaping feature is supported with all PW-based services including the PW template.