Configuring Bpdu Tunneling; Performing Configuration Prerequisites; Enabling Bpdu Tunneling - HP A5830 Configuration Manual

The upper section of
including User A network 1 and User A network 2, represents the customer networks. Enabling BPDU
tunneling on edge devices (PE 1 and PE 2) in the service provider network allows BPDUs of User A
network 1 and User A network 2 to be transparently transmitted through the service provider network.
This ensures consistent spanning tree calculation throughout User A network, without affecting the
spanning tree calculation of the service provider network.
Assume that a BPDU is sent from User A network 1 to User A network 2. The BPDU is sent by 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 CE 2.
Be 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

Performing 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.

Enabling BPDU tunneling

Enable BPDU tunneling for different protocols in different views.
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 DLDP, EOAM, GVRP, 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 DLDP, EOAM, LACP, LLDP, PAGP, or UDLD on the member port of a
Layer 2 aggregation group.
Enabling BPDU tunneling for a protocol in Layer 2 Ethernet interface view or port group view
To enable BPDU tunneling for a protocol in Ethernet interface view or port group view:
Figure 28 represents the service provider network (ISP network). The lower section,
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