Re: OSPF neighbor on non-broadcast OSPF network type

Googled and found this :
http://blog.internetworkexpert.com/2008/06/29/understanding-frame-relay-mappings-to-0000/

Chris

On Sun, May 24, 2009 at 10:50 PM, Chris Breece <cbreece1_at_gmail.com> wrote:

> This is alittle off-topic. But I've seen what you mentioned below and it's
> caused some wierd problems for me PIM. I had PIM neighbors forming between
> routers with "no frame-relay inverse-arp" and "no arp frame". Routers in
> totally different subnets and no frame maps between each other forming PIM
> nighbor relationships lol!
>
> Took me half an hour to figure out I had these 0.0.0.0 frame maps all over
> the place and I couldnt get rid of them. I had to reboot everything to make
> them go away. What causes this?
> Chris
>
>
>
> "Also take a look at the frame relay mappings show frame-relay map
> If you have en entry "0.0.0.0" this could be the problem.
>
> Santiago E"
>
>
>
>
> On Sun, May 24, 2009 at 7:27 PM, Anantha Subramanian Natarajan <
> anantha.natarajan_at_gravitant.com> wrote:
>
>> Hi Joe and All,
>>
>> Tried recreating the same config and the neighbor didn't come up as
>> expected........Thanks for all ur help ..Next time will keep the topology
>> intact :) ,whenever I see the different characteristics then expected
>> ......
>>
>> Regards
>> Anantha Subramanian Natarajan
>>
>> On Sun, May 24, 2009 at 6:17 PM, Joe Astorino <jastorino_at_ipexpert.com
>> >wrote:
>>
>> > I have not tested this scenario, but perhaps you had it non-broadcast
>> on
>> > one side and broadcast on another at first, then through the course of
>> your
>> > experimentation changed them both to non-broadcast and one side still
>> had
>> > knowledge of the other neighbor from the previous contact or something
>> > weird...who knows. The important thing here is that you truly
>> understand
>> > every possible network type matchup and all the possible timers as well
>> as
>> > how to get them up and running.
>> >
>> >
>> > Regards,
>> >
>> > Joe Astorino
>> > CCIE #24347 (R&S)
>> > Sr. Support Engineer IPexpert, Inc.
>> > URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
>> http://www.ipexpert.com/>
>> >
>> >
>> >
>> > ------------------------------
>> > *From:* Anantha Subramanian Natarajan [mailto:
>> > anantha.natarajan_at_gravitant.com]
>> > *Sent:* Sunday, May 24, 2009 7:14 PM
>> >
>> > *To:* Joe Astorino; Cisco certification
>> > *Subject:* Re: OSPF neighbor on non-broadcast OSPF network type
>> >
>> > No problem joe ...I may be fat fingered but I was sure when I saw it
>> and
>> > just moved on to different topology as it was not the concern during
>> that
>> > time and meantime posted the question to u all .
>> >
>> > Thanks
>> >
>> > Regards
>> > Anantha Subramanian Natarajan
>> >
>> > On Sun, May 24, 2009 at 6:11 PM, Joe Astorino
>> <jastorino_at_ipexpert.com>wrote:
>> >
>> >> I'd really have to see the configurations to believe that one : ) No
>> >> offense, but non-broadcast on both sides with no neighbor statement
>> just
>> >> simply won't work as far as I know.
>> >>
>> >>
>> >> Regards,
>> >>
>> >> Joe Astorino
>> >> CCIE #24347 (R&S)
>> >> Sr. Support Engineer IPexpert, Inc.
>> >> URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
>> http://www.ipexpert.com/>
>> >>
>> >>
>> >>
>> >> ------------------------------
>> >> *From:* Anantha Subramanian Natarajan [mailto:
>> >> anantha.natarajan_at_gravitant.com]
>> >> *Sent:* Sunday, May 24, 2009 7:08 PM
>> >> *To:* Joe Astorino; Cisco certification
>> >> *Subject:* Re: OSPF neighbor on non-broadcast OSPF network type
>> >>
>> >> Hi Joe,
>> >>
>> >> Both sides were non-broadcast and later me changed the topology to
>> >> broadcast on both sides to do some other scenario..I am trying to erase
>> the
>> >> config and try to recreate the same topology to see whether it comes
>> back
>> .
>> >>
>> >> Thanks
>> >>
>> >> Regards
>> >> Anantha Subramanian Natarajan
>> >>
>> >> On Sun, May 24, 2009 at 6:05 PM, Joe Astorino
>> <jastorino_at_ipexpert.com>wrote:
>> >>
>> >>> Generally you do need it, but without further information it is really
>> >>> difficult for us to tell you exactly. We need to know the network
>> type
>> >>> on
>> >>> the other side as well.
>> >>>
>> >>>
>> >>> Regards,
>> >>>
>> >>> Joe Astorino
>> >>> CCIE #24347 (R&S)
>> >>> Sr. Support Engineer - IPexpert, Inc.
>> >>> URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
>> http://www.ipexpert.com/>
>> >>>
>> >>> -----Original Message-----
>> >>> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
>> Of
>> >>> Anantha Subramanian Natarajan
>> >>> Sent: Sunday, May 24, 2009 2:25 PM
>> >>> To: Cisco certification
>> >>> Subject: OSPF neighbor on non-broadcast OSPF network type
>> >>>
>> >>> Hi All,
>> >>>
>> >>> I ran OSPF on an non-broadcast OSPF network type between R1 and R2
>> and
>> >>> saw the neighbor came up without configuring explicitly "neighbor "
>> >>> command
>> >>> under the OSPF process.I was assuming the neighbor command is
>> >>> required.Kindly let me know on this and also if missed some basic on
>> it.
>> >>>
>> >>> Thanks
>> >>>
>> >>> Regards
>> >>> Anantha Subramanian Natarajan
>> >>>
>> >>>
>> >>> Blogs and organic groups at http://www.ccie.net
>> >>>
>> >>>
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>> >>>
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Received on Sun May 24 2009 - 23:07:18 ART