3Com 5500-EI Series, Справочное руководство

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can be four (or more) times of the hello time. For a steady network, the timeout time can be five to seven
times of the hello time.
Examples
# Set the hello time factor to 7.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] stp timer-factor 7
stp transmit-limit
Syntax
z
Ethernet port view:
stp transmit-limit packetnum
undo stp transmit-limit
z
System view:
stp interface interface-list transmit-limit packetnum
undo stp interface interface-list transmit-limit
View
System view, Ethernet port view
Parameters
packetnum : Maximum number of configuration BPDUs a port can transmit in each hello time. This
argument ranges from 1 to 255.
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.
Description
z
Use the stp transmit-limit command to set the maximum number of configuration BPDUs the
current port can transmit in each hello time. Use the undo stp transmit-limit command to restore
the maximum number to the default value on the current port.
z
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 restore the maximum number to the default value for each specified
port.
By default, the maximum number of configuration BPDUs a port can transmit in each hello time is 10.
A larger number configured by the stp transmit-limit command allows more configuration BPDUs to be
transmitted in each hello time, which may occupy more switch resources. So you are recommended
configure it to a proper value to avoid network topology jitter and prevent MSTP from occupying too
many bandwidth resources.