H3C Technologies H3C S3100 Series Switches - Manual (Page 854)

3-4
To do... Use the command... Remarks
Enter Ethernet port view
interface interface-type
interface-number
—
Enable BPDU tunnel for
packets of a specific protocol
bpdu-tunnel protocol-type
Required
By default, BPDU tunnel is
disabled for packets of any
protocol.
z If BPDU tunnel transparent transmission is enabled for packets of a protocol, the protocol cannot
be enabled on the port. For example, if you execute the bpdu-tunnel lacp command, the lacp
enable command cannot be executed on the port.
z The bpdu-tunnel stp command is mutually exclusive with the vlan-vpn tunnel command. Refer to
MSTP part of this manual for details.
z To enable BPDU tunnel transmission for PAGP packets, LACP packets and UDLD packets, make
sure that the links the service provider provides are point-to-point links. Otherwise, these protocols
cannot operate properly.
z Because the NDP configuration and NTDP configuration cannot be synchronized to ports in an
aggregation group, make sure that NDP and NTDP are not enabled on any port in an aggregation
group before enabling the service provider network to use aggregation group to transmit HGMP
packets through BPDU tunnels.
z The bpdu-tunnel cdp command is mutually exclusive with the voice vlan legacy command.
Refer to Voice VLAN part of this manual for details.
z If a BPDU-tunnel-enabled port receives a tunnel packet from the customer’s network, errors occur
in the network and the tunnel packet will be dropped directly.
Displaying and Maintaining BPDU Tunnel Configuration
To do... Use the command... Remarks
Display the private multicast
MAC address used by the
tunnel packets
display bpdu-tunnel Available in any view
BPDU Tunnel Configuration Example
Transmitting STP Packets Through a Tunnel
Network requirements
z Customer1 and Customer2 are devices operating in a customer network; Provider1 and Provider2
are edge devices operating in the service provider network. The two devices receive data from the
customer network by using Ethernet1/0/1 and Ethernet1/0/2 respectively.
z Provider1 and Provider2 are connected through trunk links, which permit packets of all VLANs.