From: Nathaly Landry (lnathaly@cisco.com)
Date: Sat Nov 15 2003 - 16:09:43 GMT-3
OSPF does not form Adj on secondary address.
nat
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Matthew Poole
Sent: Friday, February 07, 2003 6:48 AM
To: Evgeny Tantsura; Joe Chang
Cc: Jeongwoo Park; ccielab@groupstudy.com
Subject: Re: OSPF - Can a router have two DR's?
I tried adding secondary IP address's and found that I only had 1 DR/BDR
- that of the primary interface.
----- Original Message -----
From: "Evgeny Tantsura" <ivgen@castel.nl>
To: "Joe Chang" <changjoe@earthlink.net>
Cc: "Jeongwoo Park" <jpark@wams.com>; <ccielab@groupstudy.com>
Sent: Friday, February 07, 2003 10:18 AM
Subject: Re: OSPF - Can a router have two DR's?
> Hi,
>
> DR is chosen per IP subnet.
> > Hi Jeongwoo,
> >
> > Your diagram is somewhat hard to understand, but from looking at
> > the adjacency table on R3 nothing seems to be wrong. You have two
> > neighbors
in
> > two different areas, so it is possible to have two DRs.
> >
> > ----- Original Message -----
> > From: "Jeongwoo Park" <jpark@wams.com>
> > To: <ccielab@groupstudy.com>
> > Sent: Friday, February 07, 2003 1:02 AM
> > Subject: OSPF - Can a router have two DR's?
> >
> >
> > > Hi all
> > > Can a router have two DR's?
> > > I have a layout as following.
> >
> -----------------------r6-------------------------r3------------------
> ----
> > --
> > > ---r5
> > > area 2 area1 area0
> > >
> > > area 1 is a transit area where the virtual link are going through.
> > > r3 has a config "ip ospf priority 0" not to be DR. In this layout,
> > > r3 seems to have two DR's( r6 and r5) as following.
> > >
> > > r3#sh ip ospf nei
> > > Neighbor ID Pri State Dead Time Address
> > Interface
> > > 170.100.51.5 1 FULL/DR 00:01:38 170.100.1.5
> > Serial0/0
> > > 170.100.66.6 1 FULL/DR 00:00:38 170.100.55.6
> > > Ethernet0/1
> > >
> > > And both r6 and r5 get priority 1 each.
> > >
> > > Is this normal behavior for r3.
> > >
> > > One more thing is that from r5's point of view, r3 is DROTHER, and
from
> > r6's
> > > point of view r3 is BDR.
> > >
> > > Are these normal behavior?
> > >
> > > Thanks a lot.
> > >
> > > JP
> > > .
> > .
> With kind regards/ met vriendelijke groeten,
> ------------------------------------------------
> E. Tantsura
> Network Developer
> Essent Kabelcom N.V.
> Dr.van Deenweg 84
> 8025BN Zwolle, The Netherlands
> Tel: +31-(0)38-850-7642
> Fax: +31-(0)38-850-7410
> Mob: +31-(0)6-290-80458
> ------------------------------------------------
> .
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