3Com Switch 7750 Configuration Guide Guide

Root Bridge Configuration 237
Configuration procedure (in system view)
Configuration procedure (in Ethernet port view)
As the maximum transmitting speed parameter determines the number of the
configuration BPDUs transmitted in each Hello time, set it to a proper value to
avoid MSTP from occupying too many network resources. The default is
recommended.
Configuration example
# Set the maximum transmitting speed of Ethernet1/0/1 port to 5.
■ Configure the maximum transmitting speed in system view.
<SW7750> system-view
[SW7750] stp interface ethernet1/0/1 transmit-limit 5
■ Configure the maximum transmitting speed in Ethernet port view.
<SW7750> system-view
[SW7750] interface ethernet1/0/1
[SW7750-Ethernet1/0/1] stp transmit-limit 5
Edge Port Configuration Edge ports are ports that neither directly connects to other switches nor indirectly
connects to other switches through network segments. After a port is configured
as an edge port, rapid transition is applicable to the port. That is, when the port
changes from blocking state to forwarding state, it does not have to wait for a
delay.
You can configure a port as an edge port in the following two ways.
Configuration procedure (in system view)
Table 164 Configure the maximum transmitting speed for specified ports in system view
Operation Command Description
Enter system view system-view -
Configure the maximum
transmitting speed for
specified ports
stp interface interface-list
transmit-limit packetnum
Required
The maximum transmitting
speed of all Ethernet ports on
a switch defaults to 10.
Table 165 Configure the maximum transmitting speed in Ethernet port view
Operation Command Description
Enter system view system-view -
Enter Ethernet port view
interface interface-type
interface-number
-
Configure the maximum
transmitting speed
stp transmit-limit
packetnum
Required
The maximum transmitting
speed of all Ethernet ports on
a switch defaults to 10.
Table 166 Configure a port as an edge port (in system view)
Operation Command Description
Enter system view system-view -