Re: DR election

Michael J Barnes <mjbarnes@CISCO.COM> Tue, 13 May 2003 16:14 UTC

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Date: Tue, 13 May 2003 08:35:36 -0700
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From: Michael J Barnes <mjbarnes@CISCO.COM>
Subject: Re: DR election
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"Zebaida, Dror (Dror)" wrote:
>
> I understand that if there is already a DR/BDR then R4 will not become the DR.
> However, when an interface transitions out of the WAIT state, if it thinks it is
> alone on the network, it declares itself the DR.  If after that, it connects to the
> network, there are 2 routers declaring themselves DR. In our case R3 and R4.
> At this stage, is a new DR elected, or does R3 remain the DR.
>
> The scenario I am describing is R4 is conneced to the network after it transitioned
> out of the WAIT state (after 40 seconds)

In this case there is a "collision" which will force a DR election, so R4
will become the DR and R3 will become DROTHER.

Regards,
Michael

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