Enabling Bpdu Tunneling; Configuration Prerequisites; Configuration Restrictions And Guidelines; Configuration Procedure - HP 3100 Series Configuration Manual

At the ingress of the service provider network, PE 1 changes the destination MAC address of
1.
the BPDU from 0x0180-C200-0000 to a special multicast MAC address, 0x010F-E200-0003
(the default multicast MAC address), for example. In the service provider network, the modified
BPDU is forwarded as a data packet in the VLAN assigned to User A.
At the egress of the service provider network, PE 2 recognizes the BPDU with the destination
2.
MAC address 0x010F-E200-0003, restores its original destination MAC address
0x0180-C200-0000, and then sends the BPDU to CE 2.
NOTE:
Through configuration, make sure that the VLAN tags carried in BPDUs are neither changed nor
removed during the transparent transmission in the service provider network. Otherwise, the
devices in the service provider network will fail to transparently transmit the customer network
BPDUs correctly.

Enabling BPDU tunneling

Configuration prerequisites

Before configuring BPDU tunneling for a protocol, perform the following tasks:
•
Enable the protocol in the customer network.
•
Assign the port on which you want to enable BPDU tunneling on the PE device and the
connected port on the CE device to the same VLAN.
•
Configure ports that connect network devices in the service provider network as trunk ports that
allow packets of any VLAN to pass through.

Configuration restrictions and guidelines

•
Settings made in Layer 2 Ethernet interface view or Layer 2 aggregate interface view take effect
only on the current port. Settings made in port group view take effect on all ports in the port
group.
•
Before you enable BPDU tunneling for HGMP, LLDP, or STP on a port, disable the protocol on
the port first.
•
Because PVST is a special STP protocol, you must do two things before you enable BPDU
tunneling for PVST on a port: first, disable STP; second, enable BPDU tunneling for STP on the
port.
•
Do not enable BPDU tunneling for LACP, LLDP, or UDLD on the member port of a Layer 2
aggregation group.

Configuration procedure

You can enable BPDU tunneling for different protocols in different views.
Enabling BPDU tunneling for a protocol in Layer 2 Ethernet interface view or port group view
Step
Enter system view.
1.
Command
system-view
99
Remarks
N/A