3Com 4800G Series, Configuration Manual

Page: 144 / 1246

144 C
HAPTER
15: BPDU T
UNNELING
C
ONFIGURATION
n
■
BPDU tunneling must be enabled globally before the BPDU tunnel
configuration for a port can take effect.
■
The BPDU tunneling feature is incompatible with the GVRP feature, so these
two features cannot be enabled at the same time. For introduction to GVRP,
refer to “Introduction to GVRP” on page 109.
■
The BPDU tunneling feature is incompatible with the NTDP feature, so these
two features cannot be enabled at the same time. If you want to enable BPDU
tunneling on a port, use the
undo ntdp enable command to disable NTDP
first. For introduction to NTDP, refer to “Cluster Management Overview” on
page 905.
Configuring
Destination Multicast
MAC Address for
BPDU Tunnel Frames
By default, the destination multicast MAC address for BPDU Tunnel frames is
0x010F-E200-0003. You can modify 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 BPDU
tunnel frames:
BPDU Tunneling
Configuration
Example
Network requirements
■
Customer A, Customer B, Customer C, and Customer D are customer network
access devices.
■
Provider A, Provider B, and Provider C are service provider network access
devices, which are interconnected through configured trunk ports.
The configuration is required to satisfy the following requirements:
■
Geographically dispersed customer network devices Customer A, Customer C
and Customer D can implement consistent spanning tree calculation across the
service provider network.
■
BPDU packets from Customer B are isolated so it does not take part in the
spanning tree calculation.
To do… Use the command… Remarks
Enter system view system-view -
Configure the destination
multicast MAC address for
BPDU Tunnel frames bpdu-tunnel tunnel-dmac
mac-address
Optional
0x010F-E200-0003 by
default.