Bpdu Tunneling Configuration; Introduction To Bpdu Tunneling - H3C LS-3100-52P-OVS-H3 Operation Manual

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BPDU Tunneling Configuration

When configuring BPDU tunneling, go to these sections for information you are interested in:

Introduction to BPDU Tunneling

Configuring BPDU Transparent Transmission
Configuring Destination Multicast MAC Address for BPDU Tunnel Frames
BPDU Tunneling Configuration Example
Introduction to BPDU Tunneling
To avoid loops in your network, you can enable the Spanning Tree Protocol (STP) on your device. Here,
the term STP is in a broad sense. It includes STP, RSTP, and MSTP. STP calculates the topology of a
network by multicasting bridge protocol data units (BPDUs) at Layer 2. As these BPDUs can be
received and processed by all STP-enabled devices, this prevents each network from correctly
calculating its independent spanning tree.
To allow each network to calculate an independent spanning tree with STP, BPDU tunneling was
introduced.
BPDU tunneling delivers the following benefits:
BPDUs can be transmitted transparently. BPDUs of the same customer network can be broadcast
in a specific VLAN across the service provider network, so that the geographically dispersed
networks of the same customer can implement consistent spanning tree calculation across the
service provider network.
BPDUs of different customer networks can be confined within different VLANs for transmission on
the service provider network. Thus, each customer network can perform independent spanning
tree calculation.
As shown in Figure
customer networks. The customer networks include network A and network B. Enabling the BPDU
tunneling function on the edge devices across the service provider network allows BPDUs of the
customer networks to be transparently transmitted in the service provider network, and allows each
customer network to implement independent spanning tree calculation, without affecting each other.
1-1, the upper part is the service provider network, and the lower part represents the
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