From: Jason Madsen (madsen.jason@gmail.com)
Date: Sun Oct 26 2008 - 18:39:19 ARST
sorry, I didn't catch the part that you had different subnet masks...yes,
they must match UNLESS you are using P2P or virtual link.
Jason
On Sun, Oct 26, 2008 at 2:37 PM, Fahad Khan <fahad.khan@gmail.com> wrote:
> hmmm.....well network type is same on both ends that is "broadcast", i set
> it under interface mode. the only different thing is subnet mask. but i
> wonder to see why its prompting as "Mismatched hello parameters"...
>
>
> On 10/27/08, Jason Madsen <madsen.jason@gmail.com> wrote:
>>
>> 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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>>
>
>
> --
> Fahad Khan
Blogs and organic groups at http://www.ccie.net
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