Configuring Bpdu Tunneling; Configuration Prerequisites; Enabling Bpdu Tunneling - HP 5820X series Configuration Manual

in the service provider network, ensuring consistent spanning tree calculation throughout User A network,
without affecting the spanning tree calculation of the service provider network.
Assume a BPDU is sent from User A network 1 to User A network 2. The BPDU is sent using the following
workflow:
At the ingress of the service provider network, PE 1 changes the destination MAC address of the
1.
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 MAC
2.
address 0x010F-E200-0003, restores its original destination MAC address 0x0180-C200-0000,
and then sends the BPDU to User A network 2.
Make sure, through configuration, 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.

Configuring BPDU tunneling

Configuration prerequisites

Before you configure BPDU tunneling for a protocol, complete 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 connecting network devices in the service provider network as trunk ports allowing
•
packets of any VLAN to pass through.

Enabling BPDU tunneling

You can enable BPDU tunneling for different protocols in different views.
Settings made in 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 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 enabling BPDU tunneling for
PVST on a port, you must also disable STP and then enable BPDU tunneling for STP on the port first.
Before enabling BPDU tunneling for LACP on a member port of a link aggregation group, remove the
port from the link aggregation group first.
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