H3C S10500X Series Configuration Manual page 21

When configuring the dampening command, follow these rules to set the values mentioned above:
•
The ceiling is equal to 2
•
The configured suppress limit is lower than or equal to the ceiling.
•
The ceiling is lower than or equal to the maximum suppress limit supported.
Figure 1 shows the change rule of the penalty value. The lines t
end time of the suppression, respectively. The period from t
to t indicates the max-suppress-time, and t
1
Figure 1 Change rule of the penalty value
Penalty
Not suppressed
Configuration restrictions and guidelines
When you configure dampening on an Ethernet interface, follow these restrictions and guidelines:
•
The dampening, link-delay, and port link-flap protect enable commands are mutually
exclusive on an interface.
•
The dampening command does not take effect on the administratively down events. When you
execute the shutdown command, the penalty restores to 0, and the interface reports the down
event to the upper-layer protocols.
•
Do not enable the dampening feature on an interface with RRPP, MSTP, or Smart Link enabled.
Configuration procedure
To configure dampening on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet
interface view.
3. Enable dampening on
the interface.
(Max-suppress-time/Decay)
t
0
Command
system-view
interface interface-type
interface-number
dampening [ half-life reuse
suppress max-suppress-time ]
× reuse-limit. It is not user configurable.
to t
0
to t indicates the complete decay period.
1 2
t
1
Suppressed
12
and t indicate the start time and
0 2
indicates the suppression period, t
2
t
2
Not suppressed
Remarks
N/A
N/A
By default, interface dampening is
disabled on Ethernet interfaces.
0
Ceiling
Suppress limit
Reuse limit
Time