1-5
To do…
Use the command…
Remarks
Enter system view
system-view
—
Enter Layer 2 aggregate
interface view
interface bridge-aggregation
interface-number
—
Enable BPDU tunneling for a
protocol on the Layer 2
aggregate interface
bpdu-tunnel dot1q
{
cdp
|
gvrp
|
hgmp
|
pvst
|
stp
|
vtp
}
Required
By default, BPDU tunneling for
a protocol is disabled.
Configuring Destination Multicast MAC Address for BPDUs
By default, the destination multicast MAC address for BPDUs is 0x010F-E200-0003. You can change it
to 0x0100-0CCD-CDD0, 0x0100-0CCD-CDD1 or 0x0100-0CCD-CDD2 through the following
configuration.
Follow these steps to configure destination multicast MAC address for BPDUs:
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the destination
multicast MAC address for
BPDUs
bpdu-tunnel tunnel-dmac
mac-address
Optional
0x010F-E200-0003 by default.
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
BPDU Tunneling for STP Configuration Example
Network requirements
As shown in
Figure 1-3
:
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.
z
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.
z
MSTP is enabled on User A’s network.
It is required that, after the configuration, 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.
