3Com Switch 8800 Configuration Guide Chapter 38 MSTP Region-configuration
38-21
38.2.8 Setting the Timeout Factor of a Specific Bridge A switch transmits hello packet regularly to the adjacent bridges to check if there is link
failure. Generally, if the switch does not receive the STP packets from the upstream
switch for 3 times of hello time, the switch will decide the upstream switch is dead and
will recalculate the topology of the network. Then, in a steady network, the recalculation
may be caused when the upstream is busy. In this case, user can redefine the timeout
interval to a longer time to avoid this kind of meaningless recalculation.
You can use the following command to set the multiple value of hello time of a specified
bridge.
Perform the following configurations in system view.
Table 38-10 Setting the timeout factor of a specific switch
Operation Command
Set the timeout factor of a specified switch stp timer-factor number
Restore the default timeout factor undo stp timer-factor
It is recommended to set 5, 6 or 7 as the timeout factor in the steady network.
By default, the timeout factor of the switch is 3.
38.2.9 Configuring the Max Transmission Speed on a Port The max transmission speed on a port specifies how many MSTP packets will be
transmitted via the port every Hello Time.
The max transmission speed on a port is limited by the physical state of the port and the
network structure. You can configure it according to the network conditions.
You can configure the max transmission speed on a port in the following ways.
I. Configuration in system view
Perform the following configuration in system view.
Table 38-11 Configure the max transmission speed on a port
Operation Command
Configure the max transmission speed on a port stp interface interface-list
transmit-limit packetnum
Restore the default max transmission speed on a
port
undo stp interface
interface-list transmit-limit