3Com 4510G - BPDU Tunneling for PVST Configuration Example

11-6
Figure 11-3 Network diagram for configuring BPDU tunneling for STP
Configuration procedure
1) Configuration on PE 1
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
<PE1> system-view
[PE1] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Create VLAN 2 and assign GigabitEthernet 1/0/1 to VLAN 2.
[PE1] vlan 2
[PE1-vlan2] quit
[PE1] interface gigabitethernet 1/0/1
[PE1-GigabitEthernet1/0/1] port access vlan 2
# Disable STP on GigabitEthernet 1/0/1, and then enable BPDU tunneling for STP on it.
[PE1-GigabitEthernet1/0/1] undo stp enable
[PE1-GigabitEthernet1/0/1] bpdu-tunnel dot1q stp
2) Configuration on PE 2
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
<PE2> system-view
[PE2] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Create VLAN 2 and assign GigabitEthernet 1/0/2 to VLAN 2.
[PE2] vlan 2
[PE2-vlan2] quit
[PE2] interface gigabitethernet 1/0/2
[PE2-GigabitEthernet1/0/2] port access vlan 2
# Disable STP on GigabitEthernet 1/0/2, and then enable BPDU tunneling for STP on it.
[PE2-GigabitEthernet1/0/2] undo stp enable
[PE2-GigabitEthernet1/0/2] bpdu-tunnel dot1q stp
BPDU Tunneling for PVST Configuration Example
Network requirements
As shown in Figure 11-4:
z CE 1 and CE 2 are edges devices on the geographically dispersed network of User A; PE 1 and
PE 2 are edge devices on the service provider network.