Cisco Discovery Protocol (CDP), Digital Trunking Protocol (DTP), Port Aggregation Protocol (PAgP), Uni-directional Link Detection (UDLD), Virtual Trunk Protocol (VTP), STP (Spanning Tree Protocol) and PVST (per-VLAN Spanning Tree protocol) are supported on the 7210 SAS-D, 7210 SAS-Dxp, 7210 SAS-K 2F1C2T, 7210 SAS-K 2F6C4T, and 7210 SAS-K 3SFP+ 8C.
The existing L2PT limitations apply:
The protocols apply only to VPLS.
The protocols are mutually exclusive with running STP on the same VPLS as soon as one SAP has L2PT/BPDU translation enabled.
Forwarding occurs on the CPM and uses CPU processing cycles.