144 CHAPTER 15: BPDU TUNNELING CONFIGURATIONn ■ BPDU tunneling must be enabled globally before the BPDU tunnelconfiguration for a port can take effect.■ The BPDU tunneling feature is incompatible with the GVRP feature, so thesetwo features cannot be enabled at the same time. For introduction to GVRP,refer to “Introduction to GVRP” on page 109.■ The BPDU tunneling feature is incompatible with the NTDP feature, so thesetwo features cannot be enabled at the same time. If you want to enable BPDUtunneling on a port, use the undo ntdp enable command to disable NTDPfirst. For introduction to NTDP, refer to “Cluster Management Overview” onpage 905.ConfiguringDestination MulticastMAC Address forBPDU Tunnel FramesBy default, the destination multicast MAC address for BPDU Tunnel frames is0x010F-E200-0003. You can modify it to 0x0100-0CCD-CDD0,0x0100-0CCD-CDD1 or 0x0100-0CCD-CDD2 through the followingconfiguration.Follow these steps to configure destination multicast MAC address for BPDUtunnel frames:BPDU TunnelingConfigurationExampleNetwork requirements■ Customer A, Customer B, Customer C, and Customer D are customer networkaccess devices.■ Provider A, Provider B, and Provider C are service provider network accessdevices, which are interconnected through configured trunk ports.The configuration is required to satisfy the following requirements:■ Geographically dispersed customer network devices Customer A, Customer Cand Customer D can implement consistent spanning tree calculation across theservice provider network.■ BPDU packets from Customer B are isolated so it does not take part in thespanning tree calculation.To do… Use the command… RemarksEnter system view system-view -Configure the destinationmulticast MAC address forBPDU Tunnel framesbpdu-tunnel tunnel-dmacmac-addressOptional0x010F-E200-0003 bydefault.
