H3C S5560S-EI Series Configuration Manual page 16

• Reuse-limit—When the accumulated penalty decreases to this reuse threshold, the interface is
not dampened. Interface state changes are reported to the upper layers. For each state change,
the system also generates an SNMP trap and log message.
• Decay—The amount of time (in seconds) after which a penalty is decreased.
• Max-suppress-time—The maximum amount of time the interface can be dampened. If the
penalty is still higher than the reuse threshold when this timer expires, the penalty stops
increasing for down events. The penalty starts to decrease until it drops below the reuse
threshold.
The ceiling is equal to 2
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
Configuration restrictions and guidelines
When you configure dampening on an Ethernet interface, follow these restrictions and guidelines:
The dampening command and the link-delay command cannot be configured together 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.
(Max-suppress-time/Decay)
× reuse-limit. It is not user configurable.
to t
1
Command
system-view
5
and t
0
to t indicates the suppression period, t
0 2
indicates the complete decay period.
2
Remarks
N/A
indicate the start time and
2
0