On all 7210 SAS platforms, except for 7210 SAS-R6 and 7210 SAS-R12 IMM-b, mesh SDPs cannot be configured in a service which uses split horizon group. Conversely, if a service has a mesh-SDP configured, split horizon group cannot be used in the same service. On 7210 SAS-R6 and 7210 SAS-R12 IMM-b, SHG can be configured along with spoke-SDP and mesh-SDP.