From: Jaeheon Yoo (kghost@xxxxxxxxxxxx)
Date: Mon Apr 30 2001 - 21:49:20 GMT-3
Hi, Niall
You have to specify a neighbor on at least one of two concerned routers.
It's like eggs and chickens argument.
If you don't, there is no way of learning a neighbor in the beginning.
But after a first "valid" hello packet is received from a neighbor, that
neighbor is dynamically put in the neighbor data structure of the received
interface. Since then, no problem!
If you can get a hello from the other party in the beginning, there's no
need to specify it as a neighbor under router ospf statement.
What I mean by "valid" is that the Area ID, Authentication, Network Mask,
HelloInterval, RouterDeadInterval, and Options values match the values
configured on the receiving interface.
One more thing: only if it's valid, it doesn't matter that it is received
via unicast or multicast.
That means you can put together a broadcast network type and nonbroadcast
network type.
But once again, it has to be valid.
Hope this helps.
Regards
Jaeheon
----- Original Message -----
From: "Niall El-Assaad" <nelassaa@cisco.com>
To: <ccielab@groupstudy.com>
Sent: Tuesday, May 01, 2001 8:39 AM
Subject: OSPF: Do frame relay main interfaces need neighbor statements
(default)
>
> Hi,
>
> If I configure frame-relay interfaces like
>
> int s0
> encapsulation frame-relay
> frame-relay map ip 192.168.1.1 100 broadcast
> ip address 192.168.1.2 255.255.255.0
>
> router ospf 1
> network 192.168.1.1 0.0.0.0 area 0
>
> Then adjacencies do not form. I can see the hello packets going accross
the
> link (deb ip pack).
>
> If I add neighbor statements it works fine.
>
> Are neighbor statements needed? From Doyle it says they are only needed
pre
> 10.0. (page 558).
>
> I know about using point-to-multipoint. But just want to know if neighbors
> are essential on all versions of software.
>
> cheers,
>
> niall
>
>
> =======================================================
> Niall El-Assaad, Systems Engineer
> EMEA-UK Retail Finance North
>
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