1-4Configuring BPDU TunnelingConfiguration Prerequisitesz Before configuring BPDU tunneling for a protocol, enable the protocol in the customer networkfirst.z Assign the port on which you want to enable BPDU tunneling on the PE device and the connectedport on the CE device to the same VLAN.z Configure ports connecting network devices in the service provider network as trunk ports allowingpackets of any VLAN to pass through.Enabling BPDU TunnelingYou can enable BPDU tunneling for different protocols in different views.z Settings made in Ethernet interface view or Layer 2 aggregate interface view take effect only onthe current port; settings made in port group view take effect on all ports in the port group.z Before enabling BPDU tunneling for DLDP, EOAM, GVRP, HGMP, LLDP, or STP on a port,disable the protocol on the port first. Because PVST is a special STP protocol, before enablingBPDU tunneling for PVST on a port, you must also disable STP and then enable BPDU tunnelingfor STP on the port first.z Before enabling BPDU tunneling for LACP on a member port of a link aggregation group, removethe port from the link aggregation group first.Enabling BPDU tunneling for a protocol in Ethernet interface view or port group viewFollow these steps to enable BPDU tunneling for a protocol in Ethernet interface view or port groupview:To do... Use the command... RemarksEnter system view system-view —Enter Ethernetinterface viewinterface interface-typeinterface-numberEnterEthernetinterfaceview or portgroup viewEnter port groupviewport-group manualport-group-nameRequiredUse either commandEnable BPDU tunneling for aprotocolbpdu-tunnel dot1q { cdp |dldp | eoam | gvrp | hgmp |lacp | lldp | pagp | pvst | stp |udld | vtp }RequiredBy default, BPDU tunneling for aprotocol is disabled.
