[PE1] interface ethernet 1/0/1
[PE1-Ethernet1/0/1] port access vlan 2
# Disable STP on Ethernet 1/0/1, and then enable BPDU tunneling for STP on it.
[PE1-Ethernet1/0/1] undo stp enable
[PE1-Ethernet1/0/1] bpdu-tunnel dot1q stp
Configure PE 2.
# Configure the destination multicast MAC address for BPDUs as 0x0100-0CCD-CDD0.
[PE2] bpdu-tunnel tunnel-dmac 0100-0ccd-cdd0
# Create VLAN 2 and assign Ethernet 1/0/2 to VLAN 2.
[PE2] vlan 2
[PE2] interface ethernet 1/0/2
[PE2-Ethernet1/0/2] port access vlan 2
# Disable STP on Ethernet 1/0/2, and then enable BPDU tunneling for STP on it.
[PE2-Ethernet1/0/2] undo stp enable
[PE2-Ethernet1/0/2] bpdu-tunnel dot1q stp
BPDU tunneling for PVST configuration example
As shown in
CE 1 and CE 2 are edge devices on the geographically dispersed network of User A. PE 1 and PE
2 are edge devices on the service provider network.
All ports that connect service provider devices and customer devices and those that interconnect
service provider devices are trunk ports and allow packets of any VLAN to pass through.
PVST is enabled for VLANs 1 through 4094 on User A's network.
After the configuration, CE 1 and CE 2 implement consistent PVST calculation across the service provider
network, and that the destination multicast MAC address carried in BPDUs must be
Figure 27 Network diagram for configuring BPDU tunneling for PVST
Configure PE 1.