From: Cassidy D. Smith (csmith@plannetconsulting.com)
Date: Sat Feb 08 2003 - 08:46:19 GMT-3
I just re-read that last sentence of what I previously sent you. There is no
such thing as a point-to-multipoint subinterface. The only real point I am
trying to make to you is you need to have at minimum, two interfaces that
require DR, or two that don't. So let's make a OSPF Network type table here
and you re-read your lab scenario requirements to see which of the six
possibilities are allowed.
R1 R2 WORKS?
-------------------------------------------------------
P-T-P P-T-P YES
p-t-p p-t-m YES, if timers (hello) are allow
to be modified
p-t-p non-broad NO
p-t-p broadcast NO
p-t-m p-t-m YES
p-t-m non-broad NO
p-t-m broadcast NO
NON-BROAD NON-BROAD YES, if neighbor statements are allowed. May need
to influence DR selection (Priority)
non-broad broadcast YES, if timers (hello) are allowed to be
modified. May need to influence DR selection (Priority)
broadcast broadcast YES, may need to influence DR selection
(Priority)
The ALL CAPS combinations are the only two YES possibilities that can exist
on frame-relay interfaces without using the "ip ospf network" command.
Hope this helps..
Cassidy
-----Original Message-----
From: Sage Vadi [mailto:sagevadi@yahoo.co.uk]
Sent: Saturday, February 08, 2003 2:58 AM
To: Cassidy D. Smith
Subject: RE: OSPF: point-to-point issue (NOT hello mismatch)
Cassidy,
That's an interesting thought. I will have to double
check this again - do you have any URL explaining
this?
--- "Cassidy D. Smith" <csmith@plannetconsulting.com>
wrote: >
> What you have is one side wanting a DR and the
> other side not requiring
> one. And even though you might get an adjacency to
> come up by tweaking the
> timers (hello's...etc) You must have matching
> network types otherwise LSA
> will not be sent so the database will not synch up
> properly, so you will
> have partial info in your "show ip ospf database"
> but it will not make it to
> your route table. If you are allowed to change your
> R2 to a sub interface
> point-to-multipoint it should work.
>
> Cassidy
>
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> Sage Vadi
> Sent: Friday, February 07, 2003 11:41 PM
> To: ccielab@groupstudy.com
> Subject: OSPF: point-to-point issue (NOT hello
> mismatch)
>
>
> All,
>
> In my labs I was testing (OSPF):
>
> R1--point-to-point-------physicalSerial--R2
>
> NB: I cannot use ospf network types which is fine,
> so
> I just did map ip with dlci and neighbor statements.
> Adj comes up after hello adjustment.
>
> Problem is I can't see any OSPF routes on R2. This
> can
> work if I change R2 to point-to-point or R1 to
> multipoint.
>
> I can't find any obvious doco which states we
> would/could have hassles with this?
>
> rgds,
> Sage
>
>
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