3Com Switch 7750 Series
Command Reference Guide – MSTP Chapter 1 MSTP Configuration Commands
1-27
Example
# Enable the root protection function on Ethernet1/0/1 port.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] stp interface Ethernet 1/0/1 root-protection
1.1.25 stp interface transmit-limit Syntax
stp interface interface-list transmit-limit packetnum
undo stp interface interface-list transmit-limit
View
System view
Parameter
interface-list: Ethernet port list. You can specify multiple Ethernet ports by providing this
argument in the form of interface-list = { interface-type interface-number [ to
interface-type interface-number ] } &<1-10>, where &<1-10> means that you can
provide up to 10 port indexes/port index ranges for this argument.
packetnum: Also known as maximum transmitting speed, the maximum number of
configuration BPDUs a port can send in each Hello time. This argument ranges from 1
to 255 and defaults to 3.
Description
Use the stp interface transmit-limit command to set the maximum number of
configuration BPDUs each specified port can send in each Hello time.
Use the undo stp interface transmit-limit command to revert to the default maximum
number.
The larger the packetnum argument is, the more packets a port can transmit in each
Hello time. Configure the packetnum argument to a proper value to limit the number of
BPDUs a port can send in each Hello time to avoid MSTP from occupying too much
network resources when network topology jitter occur.
Related command: stp transmit-limit.
Example
# Set the maximum transmitting speed of Ethernet1/0/3 port to 5.
<3Com> system-view
System View: return to User View with Ctrl+Z.
[3Com] stp interface Ethernet 1/0/3 transmit-limit 5