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From: Swati Rastogi (swatirstogiYAHOO.COM)
Date: Wed Dec 12 2001 - 23:36:47 CST
As Section 9.2 when BDR goes down event NeighborChange is generated. Refer
to Section 9.3 which states that in any of the states DR Other, DR or BDR
if the event is the one mentioned then recalculate attached network's DR
and BDR as per the rules given in 9.4
Does it imply that the whole re-election takes place.
Also BDR is supposed to take over when the DR fails. But according to this
if the DR fails then the entire re-calculation will take place.
Please help, I am getting a lot confused.
----- Original Message -----
From: "Sina Mirtorabi" <sinaCISCO.COM>
Sent: Wednesday, December 12, 2001 11:39 PM
Subject: Re: BDR failing!
| Swati Rastogi wrote:
| > Hi,
| > When the DR fails the BDR takes over.
| > When both fail the re-election takes place.
| actually the re-election takes place when ever there is a neighbor event
| change see NeighborChange section 9.2
| > What happens when the BDR only fails ?
| after the RouterDeadInterval a given Router run the election and elect a
| also note that the election can be run many time due to NeighborChange
| > Does the re-election for the BDR only take place in which all the
| > who declare themselves as BDR contest ?
| > Or nothing happens and that the DR continues as before. I think it is
| > former.
| once the election takes place a router will look among all the routers (
| including itself ) eligible to become DR/BDR ( priority =/= 0 ) and not
| declaring themselves as DR the router with the highest priority ( if
| highest Router ID will be elected BDR
| please see section 9.4 for DR election algorithm
| > Thanks and Regards,
| > Swati
| > _________________________________________________________
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