H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – MSTP
H3C S7500 Series Ethernet Switches Chapter 1
MSTP Configuration
1-16
period ensures that the newly generated configuration BPDUs can be propagated
across the entire network.
z The Hello time parameter is for link failure detecting.
A switch regularly sends hello packets to other switches at the interval specified by the
Hello time parameter to detect the link failures.
z The Max age parameter is used to judge whether or not a configuration BPDU is
obsolete. Obsolete configuration BPDUs will be discarded.
I. Configuration procedure
Follow these steps to configure MSTP time-related parameters:
To do ... Use the command ... Remarks
Enter system view
system-view
—
Configure the
Forward delay
parameter
stp timer forward-delay
centiseconds
Required
The Forward delay parameter
defaults to 1,500 centiseconds
(15 seconds).
Configure the Hello
time parameter
stp timer hello
centiseconds
Required
The Hello time parameter
defaults to 200 centiseconds (2
seconds).
Configure the Max
age parameter
stp timer max-age
centiseconds
Required
The Max age parameter defaults
to 2,000 centiseconds (20
seconds).
All switches in a switched network adopt the three time-related parameters configured
on the CIST root bridge.