Re: Waiting State Question

[Erblichs <[e-mail]>]

Anthony, et al,

	I am not sure what you are stating is correct.

	When an interface becomes active, the router checks
	the hellos on that interface for a period of
	time, known as the Waiting period in environments
	that supports DR and BDRs.

	If the interface is a passive interface, then ...
	Else {

	If one DR is seen and we are not declaring ourselves
	as the DR, we accept it and synch our LSDB, etc...

	}

	Else...

	Mitchell Erblich
	-----------------------

Anthony Baire wrote:
> 
> On Jeu 19 mai 2005 14:20, John Smith a écrit :
> > Hi,
> >
> > When a router comes up it starts the Wait Timer before it elects the
> > DR/BDR. It either
> > waits for the Wait Timer to expire or it waits for a router declaring
> > itself as the BDR
> > before it decides that it needs to get out of the 'Waiting' state (it does
> > this by
> > generating the Backupseen event).
> >
> > My question is why does it wait only for the BDR? Why not the DR? It can
> > when it recieves
> > a HELLO from the DR know that their exists a DR and a BDR. Why not then
> > get out of the
> > 'Waiting' state?
> 
> Hi John,
> 
> this is not the exact definition of event BackupSeen. The event is
> generated when the router detects the existence or non-existence of a
> backup designated router. This can be done by receiving a Hello packet
> from a DR claiming that there is no BDR on the network.
> 
> Anthony