Chapter 2 Bpdu Tunnel Configuration; Bpdu Tunnel Overview; Bpdu Tunnel Configuration - Huawei Quidway S3500 Series Operation Manual

Operation Manual - STP
Quidway S3500 Series Ethernet Switches

Chapter 2 BPDU Tunnel Configuration

2.1 BPDU Tunnel Overview

Bridge protocol data unit (BPDU) Tunnel enables geographically distributed user
network to transmit BPDU packets transparently over the specified VLAN VPN on the
operator's network. This allows the user networks to participate in a uniform spanning
tree calculation while maintaining a separate spanning tree from the operator network.
As shown in Figure 2-1, the upper part is the operator's network, and the lower part is
the user network. The operator's network comprises packet ingress/egress devices,
and the user network has networks A and B. On the operator's network, configure the
arriving BPDU packets at the ingress to have MAC addresses in a special format, and
reconvert them back to their original formats at the egress. This is how transparent
transmission is implemented on the operator's network.
Packet ingress/egress Packet ingress/egress Packet ingress/egress Packet ingress/egress
device device device device
Network A Network A Network A Network A Network A Network A Network A Network A
Figure 2-1 BPDU Tunnel network hierarchy

2.2 BPDU Tunnel Configuration

BPDU Tunnel configuration tasks are described in the following table:
Table 2-1 BPDU Tunnel configuration
Configuration item
Enable BPDU Tunnel
of the system.
Enable VLAN VPN
on the Ethernet port.
Operator' s Operator' s
Network Network Network Network Network Network Network Network
User User
Command
vlan-vpn
tunnel
vlan-vpn
enable
Huawei Technologies Proprietary
2-1
Chapter 2 BPDU Tunnel Configuration
Network Network
Packet ingress/egress Packet ingress/egress Packet ingress/egress Packet ingress/egress
device device device device
Network Network
Network B Network B Network B Network B Network B Network B Network B Network B
View Description
System Required in BPDU Tunnel
view configuration
Ethernet Required
port view configuration
in VLAN VPN