Network Diameter Configuration; Mstp Time-Related Configuration - Huawei Quidway S3900 Series Operation Manual

Operation Manual – MSTP
Quidway S3900 Series Ethernet Switches-Release 1510
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
Enter system view
Configure the network
diameter for a network
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.
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
Command
system-view
stp bridge-diameter
bridgenumber
Huawei Technologies Proprietary
1-16
Chapter 1 MSTP Configuration
Description
—
Required
The default network
diameter of a network is 7.