From: Jason Madsen (madsen.jason@gmail.com)
Date: Sun Jul 13 2008 - 19:26:55 ART
thanks for the feedback, although i too know many different ospf over frame
implementations that work just fine and i would never try one like the one i
mentioned earlier under normal circumstances, but i read a practice test
question somewhere that required such a configuration. the problem is,
after i read it I couldn't find it again :-( it might have been old. i
have seen Cisco documentation regarding ttl security commands that don't
seem to be available in newer IOSs.
thanks,
Jason
On Sun, Jul 13, 2008 at 4:21 PM, Rick Mur <rick.mur@gmail.com> wrote:
> First of all, why would you want to have a DR and BDR election in your hub
> & spoke frame-relay cloud?
> I would suggest using a point-to-multipoint network type, which is the
> right one for this.
>
> For you assignment of building an OSPF adjacency without using a
> virtual-link of tunnel I would suggest looking at 2 OSPF processes and
> redistributing in each other. I don't know if it's possible to change the
> TTL of OSPF, but seriously doubt it.
>
> Sample config:
>
> int fa0/0
> ip add1.1.1.1 255.255.255.0
>
> int fa0/1
> ip add 2.2.2.2 255.255.255.0
>
> router ospf 1
> redist ospf 2 subnets
> network 1.1.1.1 0.0.0.0 area 0
>
> router ospf 2
> redist ospf 1 subnets
> network 2.2.2.2 0.0.0.0 area 0
>
> Regards,
>
> Rick
>
>
> On 13 jul 2008, at 22:34, Jason Madsen wrote:
>
> more specifically i'm trying to see if i can force one of my spokes, in
>> a
>> frame-relay hub and spoke topology, to become the DR and still have the
>> other spoke form an adjacency while using ip ospf network broadcast as the
>> network type. the hub and both spokes in area 0. as we'd expect, by
>> default the hub and the one spoke set as the DR form an adjacency, but the
>> other spoke gets stuck in 2WAY. I believe I read there's a way to do this
>> by manipulating the TTL value native to OSPF, but I have no idea where I
>> saw
>> that reference.
>>
>> Jason
>>
>> On Sun, Jul 13, 2008 at 2:14 PM, Jason Madsen <madsen.jason@gmail.com>
>> wrote:
>>
>> trying to form a multi-hop adjacency without using a virtual link or
>>> tunnels etc.
>>>
>>>
>>> On Sun, Jul 13, 2008 at 2:10 PM, Jason Madsen <madsen.jason@gmail.com>
>>> wrote:
>>>
>>> isn't there an option somewhere to adjust OSPF's TTL value beyond the
>>>> default of 1? I didn't see much help in the Doc CD, RFC, or command
>>>> line
>>>> so far.
>>>>
>>>
>>
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