H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – QinQ-BPDU Tunneling
H3C S7500E Series Ethernet Switches Chapter 2 BPDU Tunneling Configuration
2-6
2) Configuration on Provider B
# Configure BPDU isolation on Ethernet 2/0/2.
<ProviderB> system-view
[ProviderB] interface ethernet 2/0/2
[ProviderB-Ethernet2/0/2] port access vlan 4
[ProviderB-Ethernet2/0/2] bpdu-tunnel dot1q enable
3) Configuration on Provider C
# Configure BPDU transparent transmission on Ethernet 2/0/3.
<ProviderC> system-view
[ProviderC] interface ethernet 2/0/3
[ProviderC-Ethernet2/0/3] port access vlan 2
[ProviderC-Ethernet2/0/3] stp disable
[ProviderC-Ethernet2/0/3] bpdu-tunnel dot1q enable
[ProviderC-Ethernet2/0/3] bpdu-tunnel dot1q stp
# Configure BPDU transparent transmission on Ethernet 2/0/4.
[ProviderC-Ethernet2/0/3] quit
[ProviderC] interface ethernet 2/0/4
[ProviderC-Ethernet2/0/4] port access vlan 2
[ProviderC-Ethernet2/0/4] stp disable
[ProviderC-Ethernet2/0/4] bpdu-tunnel dot1q enable
[ProviderC-Ethernet2/0/4] bpdu-tunnel dot1q stp
 Note:
When STP works stably on the customer network, if Customer A acts as the root bridge,
the ports of Customer C and Customer D connected with Provider C can receive
BPDUs from Customer A. Since BPDU isolation is enabled on Customer B, the port
that connects Customer B to Provider B cannot receive BPDUs from Customer A.