Spoke-SDP termination into a Layer 3 service is not supported on 7210 SAS platforms.
Distributed services use service distribution points (SDPs) to direct traffic to another SR-Series router via service tunnels. SDPs are created on each participating SR-Series and then bound to a specific service. SDP can be created as either GRE or MPLS. See SDPs for information about configuring SDPs.
This feature provides the ability to cross-connect traffic entering on a spoke-SDP, used for Layer 2 services (VLLs or VPLS), on to an IES or VPRN service. From a logical point of view, the spoke-SDP entering on a network port is cross-connected to the Layer 3 service as if it entered by a service SAP. The main exception to this is traffic entering the Layer 3 service by a spoke-SDP is handled with network QoS policies not access QoS policies.
The following figure shows traffic terminating on a specific IES or VPRN service that is identified by the sdp-id and VC label present in the service packet.
The following figure shows a spoke-SDP terminating directly into an IES. In this case, a spoke-SDP could be tied to an Epipe or H-VPLS service. There is no configuration required on the PE connected to the CE.
All the routing protocols, including multicast, that are supported by VPRN are supported for spoke-sdp termination.