Configure The Switching Network Diameter - Huawei Quidway S6500 Series Operation Manual

Operation Manual - STP
Quidway S6500 Series Ethernet Switches
You can use the following command to configure the max hops in an MST region.
Perform the following configuration in system view.
Table 1-7 Configure the max hops in an MST region
Configure the max hops in an MST region.
Restore the default max hops in an MST region
The more the hops in an MST region, the larger the scale of the region. Only the max
hops configured on the region root can limit the scale of MST region. Other switches in
the MST region also apply the configurations on the region root, even if they have been
configured with max hops.
By default, the max hops of an MST is 20.

1.2.6 Configure the Switching Network Diameter

Any two hosts on the switching network are connected with a specific path carried by a
series of switches. Among these paths, the one passing more switches than all others
is the network diameter, expressed as the number of passed switches.
You can use the following command to configure the diameter of the switching network.
Perform the following configuration in system view.
Table 1-8 Configure the switching network diameter
Configure the switching network diameter.
Restore the default switching network diameter.
The network diameter is the parameter specifying the network scale. The larger the
diameter, the lager the scale.
When a user configures the network diameter on a switch, MSTP automatically
calculates and sets the hello time, forward-delay time and maximum-age time of the
switch to the desirable values.
Setting the network diameter takes effect on CIST only, but has no effect on MSTI.
By default, the network diameter is 7 and the three corresponding timers take the
default values.
Operation
Operation
Huawei Technologies Proprietary
1-15
Chapter 1 MSTP Region-configuration
Command
stp max-hops hop
undo stp max-hops
Command
stp bridge-diameter bridgenum
undo stp bridge-diameter