Netgear M4300-24X24F (XSM4348S) - Stackable Managed Switch with 48x10G including 24x10GBASE-T and 24xSFP+ Layer 3 Guia Do Programa

Router# show interface dampening

Interface 0/2

Flaps   Penalty   Supp   ReuseTm   HalfL   ReuseV   SuppV   MaxSTm   MaxP   Restart

   0        0     FALSE     0         5    1000     2000      20     16000      0

Interface 0/3

Flaps   Penalty   Supp   ReuseTm   HalfL   ReuseV   SuppV   MaxSTm   MaxP   Restart

   6     1865      TRUE     18        20    1000     2001      30     2828   1500

OSPF graceful restart is supported on the M4300 series switches only.

The OSPF protocol can be configured to participate in the checkpointing service, so that 
these protocols can execute a graceful restart” when the management unit fails. In a graceful 
restart, the hardware to continues forwarding IPv4 packets using OSPF routes while a 
backup switch takes over management unit responsibility 

Graceful restart uses the concept of helpful neighbors. A fully adjacent router enters helper 
mode when it receives a link state announcement (LSA) from the restarting management unit 
indicating its intention of performing a graceful restart. In helper mode, a switch continues to 
advertise to the rest of the network that they have full adjacencies with the restarting router, 

Flaps

The number times the link state of an interface changed from UP to DOWN.

Penalty

Accumulated Penalty.

Supp

Indicates if the interface is suppressed or not.

ReuseTm

Number of seconds until the interface is allowed to come up again.

HalfL

Configured half-life period.

ReuseV

Configured reuse-threshold.

SuppV

Configured suppress threshold.

MaxSTm

Configured maximum suppress time in seconds.

MaxP

Maximum possible penalty.

Restart

Configured restart penalty.

The command 

Any change in the dampening configuration resets the current penalty, reuse time and suppressed state to their 

default values, meaning 

0, 0, and False respectively.