H3C Technologies H3C S12500 Series Switches - Manual (Page 181)

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Step Command Remarks
1. Enter system view. system-view N/A
2. Configure the destination
multicast MAC address for
BPDUs.
bpdu-tunnel tunnel-dmac
mac-address
Optional.
The default setting is
0x010F-E200-0003.
NOTE:
For BPDUs to be recognized, the destination multicast MAC addresses configured for BPDU tunneling must
be the same on the edge devices on the service provider network.
BPDU tunneling configuration examples
IMPORTANT:
By default, Ethernet, VLAN, and aggregate interfaces are in DOWN state. Before configuring these
interfaces, use the undo shutdown command to bring them up.
BPDU tunneling for STP configuration example
Network requirements
As shown in Figure 58 :
• 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.
• All ports that connect service provider devices and customer devices are access ports and belong
to VLAN 2; all ports that interconnect service provider devices are trunk ports and allow packets of
any VLAN to pass through.
• MSTP is enabled on User A’s network.
Configure BPDU tunneling, so that CE 1 and CE 2 implement consistent spanning tree calculation across
the service provider network and that the destination multicast MAC address carried in BPDUs be
0x0100-0CCD-CDD0.
Figure 58 Network diagram
ISP network
BPDU tunnel
User A network 1
MSTP region
User A network 2
MSTP region
CE 1 CE 2
PE 1 PE 2
GE4/0/1
VLAN 2 GE4/0/2
VLAN 2