From: Jason Madsen (madsen.jason@gmail.com)
Date: Sun Oct 26 2008 - 18:32:56 ARST
Fahad,
You can mix OSPF types, but NOT if one type requires a DR (broadcast,
non-broadcast) with a type that doesn't use a DR (p2p, p2m, and p2m
non-broadcast)...it won't work. If mixing compatible types just remember to
consider timers...they must match.
Jason
On Sun, Oct 26, 2008 at 2:24 PM, Fahad Khan <fahad.khan@gmail.com> wrote:
> Dear All,
>
> Have a look to the scenario,
>
>
> R1(s1/0-10.0.0.1/*16*)------------------(10.0.0.2/*8*-s1/0)R2<http://10.0.0.2/*8*-s1/0%29R2>
>
> *OSPF adj forms* in case if i set the network type "point-to-point" on both
> serial interfaces
>
> But if I set network type as "Broadcast", *adj is not formed*
>
> and the "debug ip ospf adj+events+packets" looks like (on R1);
>
> *Mar 1 00:08:58.783: OSPF: Send with youngest Key 0
> *Mar 1 00:08:58.783: OSPF: Send hello to 224.0.0.5 area 0 on Serial1/0
> from
> 10.
> 0.0.1
> *Mar 1 00:09:06.431: OSPF: rcv. v:2 t:1 l:44 rid:2.2.2.2
> aid:0.0.0.0 chk:0 aut:2 keyid:0 seq:0x3C7EC691 from Serial1/0
> *Mar 1 00:09:06.435: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial1/0
> 10.0.0.
> 2
> *Mar 1 00:09:06.439: OSPF: Mismatched hello parameters from 10.0.0.2
> *Mar 1 00:09:06.443: OSPF: Dead R 40 C 40, Hello R 10 C 10 Mask R
> 255.0.0.0 C
> 255.255.0.0
>
> Can any body shed light on the reason behind all this?
> Thanks in advance
>
> best regards,
> --
> Fahad Khan
>
>
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