SDPs are supported by all 7210 SAS platforms as described in this document, except those operating in access-uplink mode.
When an SDP is bound to a service, it is bound as either a spoke-SDP or a mesh SDP. The type of SDP indicates how flooded traffic is transmitted. The 7210 SAS network mode devices support both spoke and mesh SDPs.
A spoke-SDP is treated like the equivalent of a traditional bridge port where flooded traffic received on the spoke-SDP is replicated on all other ports and not transmitted on the port it was received.
All mesh SDPs bound to a service are logically treated like a single bridge port for flooded traffic where flooded traffic received on any mesh SDP on the service is replicated to other ports (spoke-SDPs and SAPs) and not transmitted on any mesh SDPs.