Operation Manual – MSTP
Quidway S3900 Series Ethernet Switches-Release 1510 Chapter 1 MSTP Configuration
Huawei Technologies Proprietary
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II. Configuration example
# Configure the maximum hops of the MST region to be 30 (assuming that the current
switch operates as the region root).
<Quidway> system-view
[Quidway] stp max-hops 30
1.2.8 Network Diameter Configuration
In a switched network, any two switches can communicate with each other through a
path, on which there may be some other switches. The network diameter of a network
is measured by the number of switches; it equals the number of the switches on the
longest path (that is, the path contains the maximum number of switches).
I. Configuration procedure
Table 1-10 Configure the network diameter for a network
Operation Command Description
Enter system view
system-view
—
Configure the network
diameter for a network
stp bridge-diameter
bridgenumber
Required
The default network
diameter of a network is 7.
The network diameter parameter indicates the size of a network. The larger the network
diameter is, the larger the network size is.
After you configure the network diameter of a switched network, A MSTP-enabled
switch adjusts its Hello time, Forward delay, and Max age settings accordingly.
The network diameter setting only applies to CIST; it is invalid for MSTIs.
II. Configuration example
# Configure the network diameter of the switched network to 6.
<Quidway> system-view
[Quidway] stp bridge-diameter 6
1.2.9 MSTP Time-related Configuration
You can configure three MSTP time-related parameters for a switch: Forward delay,
Hello time, and Max age.
z The Forward delay parameter sets the delay of state transition.
Link problems occurred in a network results in the spanning trees being regenerated
and original spanning tree structures being changed. As the newly generated
configuration BPDUs cannot be propagated across the entire network immediately
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