Stp Bridge-Diameter - Huawei Quidway S3900 series Command Manual

Command Manual – MSTP
Quidway S3900 Series Ethernet Switches-Release 1510
Caution:
As Gigabit ports of an S3900 series switch cannot be shut down, the BPDU protection
function is not applicable to these ports even if you enable the BPDU protection
function and specify these ports to be MSTP edge ports.

1.1.12 stp bridge-diameter

Syntax
stp bridge-diameter bridgenum
undo stp bridge-diameter
View
System view
Parameter
bridgenum: Network diameter to be set for a switched network. This argument ranges
from 2 to 7 and defaults to 7.
Description
Use the stp bridge-diameter command to set the network diameter of a switched
network. The network diameter of a switched network is represented by the maximum
possible number of switches between any two terminals in a switched network.
Use the undo stp bridge-diameter command to revert to the default network diameter.
After you configure the network diameter of a switched network, MSTP adjusts its Hello
time, Forward delay, and Max age settings accordingly. With the network diameter set
to 7 (the default), the three time-relate settings, Hello time, Forward delay, and Max age,
are set to their defaults as well.
The stp bridge-diameter command only applies to CIST; it is invalid for MSTIs.
Related command: stp timer forward-delay, stp timer hello, and stp timer max-age.
Example
# Set the network diameter to 5.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] stp bridge-diameter 5
Huawei Technologies Proprietary
1-12
Chapter 1 MSTP Configuration Commands