From: Wen Jia Yang (tonyblair@xxxxxxxxx)
Date: Sun Feb 03 2002 - 05:28:01 GMT-3
thank you all people,you are all good and kind-hearted guys,I solved my problem
,thanks again.
----- Original Message -----
From: "Brian Dennis" <brian@5g.net>
To: "Wen Jia Yang" <tonyblair@etang.com>; <ccielab@groupstudy.com>
Sent: Sunday, February 03, 2002 3:28 PM
Subject: Re: how to control OSPF DR&BDR selection in NBMA networks?
> > Now I would like hub to be the DR,which one is BDR doesn't matter.
>
> It does matter who the BDR is. You shouldn't have a BDR is this design. If
> the hub is the DR and say spoke1 is the BDR when using physical interfaces
> with frame-relay, what is going to happen when the hub gets rebooted?
>
> Answer: Spoke1 will become the DR and when the hub comes back up it will see
> that there already is a DR and no DR election will take place. Since spoke2
> and spoke3 do not have direct communication with the DR (spoke1) your network
> will be hosed.
>
> Brian Dennis, CCIE #2210 (R&S)(ISP/Dial)
>
> On Saturday 02 February 2002 10:47 pm, Wen Jia Yang wrote:
> > For instance,in typical hub and spoke frame-relay topology,what shall we do
> > to accomplish this?
> >
> > hub -------fr sw-----spoke1
> > / \
> > / \
> > / \
> > spoke2 spoke3
> >
> > Now I would like hub to be the DR,which one is BDR doesn't matter.
> >
> > what shall we do to do this?
> > how many methods do we have?
> >
> > thanks for your help!
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