Command Manual – MSTP
H3C S7500E Series Ethernet Switches Chapter 1 MSTP Configuration Commands
1-16
Examples
# Enable the BPDU guard function for the device.
<Sysname> system-view
[Sysname] stp bpdu-protection
1.1.16 stp bridge-diameter
Syntax
stp bridge-diameter bridge-number
undo stp bridge-diameter
View
System view
Parameters
bridge-number: Specifies the switched network diameter, in the range of 2 to 7.
Description
Use the stp bridge-diameter command to specify the network diameter, namely the
maximum number of stations between any two terminal devices on the switched
network.
Use the undo stp bridge-diameter command to restore the default network diameter
setting.
By default, the network diameter of the switched network is 7.
An appropriate setting of hello time, forward delay and max age can speed up network
convergence. The values of these timers are related to the network size. You can set
these three timers indirectly by setting the network diameter. Based on the network
diameter you configured, MSTP automatically sets an optimal hello time, forward delay,
and max age for the device. With the network diameter set to 7 (the default), the three
timer are also set to their defaults.
Note that this configuration is effective for the CIST and root bridge only, and not for
MSTIs.
Related commands: stp timer forward-delay, stp timer hello, stp timer max-age.
Examples
# Set the network diameter of the switched network to 5.
<Sysname> system-view
[Sysname] stp bridge-diameter 5
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