-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
Daniel Ma
Sent: Tuesday, June 06, 2000 8:51 PM
To: [EMAIL PROTECTED]
Subject: Re: OSPF configuration - Please help
In router A, I think you could not put the mask as 0.0.0.0, because if so
the area only include one ip address.
CL: gentle correction. In OSPF, the network statement places interfaces, not
addresses, into the OSPF process. This is not well explained in many of the
study materials, and many examples appear to place subnets into OSPF.
Thus, if one were to use the network statement 10.1.1.1 0.0.0.0 area 0,
this would place only the interface with that number into OSPF. Functionally
speaking, one could say network 10.1.1.1 0.255.255.255 and have the same
result.
I have done a number of experiments along this line, and verified that so
long as the network statement matches an interface address in one way or
another, it makes no difference how you state it. OSPF functions correctly,
and packets get router correctly. I don't know, but I believe that the Cisco
IOS OSPF process gathers subnet and mask information directly from the
interface configuration.
This can lead to some interesting and fun ways of doing things. For example,
suppose you had a super routers with 200 interfaces and subinterfaces, and
ever one of those interfaces was numbered in such a way that the third octet
was 42. .e. 192.168.42.67, 10.99.42.240, 172.23.42.1, you get the idea. You
can put each and every one of those interfaces into the OSPF process with a
single command. - network 0.0.42.0 255.255.0.255 area 0 ( assuming you want
them all in area 0 )
Not earth shaking information. Just something to help understand how things
work.
Another thing is, have u try show interface and make sure the Serial port is
up?
Daniel
"Billy Monroe" <[EMAIL PROTECTED]> wrote in message
8hj7i6$tdo$[EMAIL PROTECTED]">news:8hj7i6$tdo$[EMAIL PROTECTED]...
> Hello:
>
> I have two 2503 and I am following Hutnik's to configure OSPF.
> I connected RouterA, s0 (DCE) to RouterB, s0(DTE).
>
> When I enter #show ip ospf int I see the following:
> ...
> Transmit Delay is 1 sec, State DOWN
> Hello due in...
> ...
>
>
> The State should be "POINT_TO_POINT".
> The routers don't see each other. (#show ip route doesn't display OSPF
> entry).
> I entered "no shut" and "shut" in both routers s0 interfaces but it didn't
> work. Any idea of what is wrong ?
>
>
> Configurarion is below.
>
>
> THanks,
>
>
>
>
>
>
>
>
>
> RouterA
>
>
> !
> hostname RouterA
> !
> int Loopback0
> ip add 10.1.1.1 255.255.255.0
>
>
> int Loopback1
> ip add 11.1.1.1 255.255.255.0
> !
> int S0
> ip add 192.1.1.1 255.255.255.0
> no fair-queue
> router ospf 64
> network 192.1.1.1 0.0.0.0 area 0
> network 10.1.1.1 0.0.0.0 area 0
> !
> no ip classless
> !
> ...
>
>
> RouterB
>
>
> !
> hostname RouterB
> !
> int loopack0
> ip add 152.1.1.1 255.255.255.0
> int Loopback1
> ip add 153.1.1.1 255.255.255.0
> !
> int serial0
> ip add 192.1.1.2 255.255.255.0
> no fair-queue
> clockrate 500000
> !
> int s1
> no ip add
> shutdown
> !
> router ospf 64
> network 0.0.0.0 255.255.255.255
> !
> no ip classless
> !
> ...
>
>
>
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