From: Dave Cooper (aka2102@yahoo.com)
Date: Fri Oct 11 2002 - 09:26:46 GMT-3
Hi
r1-----r2
|
|-----r3
- Version 12.1(11.6). All interfaces are frame relay
sub interfaces.
- OSPF Area=1 for all interfaces
- r1 interface is p-2-m. Has frame-r map to r2 & r3
(have added broadcast too in the map command)
- r2 is p-2-p. Has frame-r interface-dlci going to r1
(On 12.1 frame-r map is not allowed on p-2-p)
- r3 is p-2-p. Has frame-r interface-dlci going to r1
(frame-r map is not allowed)
- I can ping from every router to every other router.
Problem 1
=========
On r1 - sh ip ospf inter shows interface as NBMA. Also
I've added nei as r1 and r3. OSPF pri = 100
On r2 - sh ip ospf inter shows interface as p-2-p.I
didn't add neibhor.
On r3 - sh ip ospf inter shows interface as p-2-p.I
didn't add neibhor.
I can't form adjacency between r1--r2 & r1--r3.
However if I make r2 & r3 interface as NBMA and add r1
as neighbor (on both r2 & r3), adj. is formed.
I think, few days back I saw email (if hub is nbma,
spoke need not be NBMA) which was contrary to what I'm
seeing.
Should we have hub=NBMA && spoke(s)=NBMA ??
Problem 2
=========
further,
On r2 - I add r3 as neighbor
On r3 - I add r2 as neighbor
Adj is not formed, even though r2 & r3 can ping each
other. I keep getting TTL exceed drop messages on R1
(source=r2, dest=r3 and vice versa)
Why are pings going through but adj is not formed ??
Am I missing something really basic here ?
thanks
Dave
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