From: Dezso Csonka (dcsonka@xxxxxxxxx)
Date: Mon Aug 28 2000 - 03:23:52 GMT-3
Hi,
Yes, you are right. I have just tested this problem and if you change the
network type ("ip ospf network point-to-point" under loopback) of the
loopbk, then it is advertised as a normal intf with the proper mask. You
need 12.0 or higher.
r1#sh ip os int loo1
Loopback1 is up, line protocol is up
Internet Address 130.3.0.17/28, Area 5
Process ID 3, Router ID 137.3.1.1, Network Type POINT_TO_POINT, Cost: 1
Transmit Delay is 1 sec, State POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:00
Neighbor Count is 0, Adjacent neighbor count is 0
Suppress hello for 0 neighbor(s)
r1#sh ip os int loo0
Loopback0 is up, line protocol is up
Internet Address 130.3.1.1/32, Area 5
Process ID 3, Router ID 137.3.1.1, Network Type LOOPBACK, Cost: 1
Loopback interface is treated as a stub Host
Dezs
----- Original Message -----
From: Padhu@steinroe.com
To: chad@wa.net ; ccielab@groupstudy.com ; geatti@home.com
Sent: Friday, August 25, 2000 7:19 PM
Subject: Advertising loopbacks not as a /32
Earl's appraoch pretty much nails it.
but if ur allowed to use the loopbacks under an area ,then one thing i wanna
add is that ( although i need to confirm reading Don Slice's book) if you
change the loopback type to point to point,it will not be a candidate for
router id...just treated like a regular
interface....
I was considering this my option (for not having 12.0 router id cmd) to
manipulate which loopback gets selected as router id
rather than the highest loopback ip...Like i said ,my routers are powered
off for another month, so i can't confirm..Just my plan...
Cheers,Padhu
-----Original Message-----
From: Chad Marsh [mailto:chad@wa.net]
Sent: Friday, August 25, 2000 9:37 AM
To: ccielab@groupstudy.com; Geatti
Subject: Re: 2nd attempt at a question!!
This rings a bell, I'm pretty sure 'ip ospf network point-to-point' does it,
but like Paul just stated, I don't think that was available until 11.3
When I had my home lab, I was running everything at 11.2(17), and I'm pretty
sure I got it to work by changing the ospf network type to broadcast. (Or
maybe it was non-broadcast with peer statements...)
Chad Marsh
CCIE # 5185
----- Original Message -----
From: Geatti
To: Simon Baxter ; CCIE Group Study (E-mail)
Sent: Friday, August 25, 2000 8:20 AM
Subject: RE: 2nd attempt at a question!!
someone mentioned you could change the network type with certain ios
versions 'ip ospf network....' Haven't tried it myself yet but look back a
few days and you'll find the post.
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of Simon Baxter
> Sent: Friday, August 25, 2000 9:51 AM
> To: CCIE Group Study (E-mail)
> Subject: 2nd attempt at a question!!
>
> I'm doing a test lab which has asked me if there's any way to advertise
> routes to loopback interfaces as anything but /32 routes.
>
> I can't see any way around this :
>
> Link connected to: a Stub Network
> (Link ID) Network/subnet number: 130.130.33.1
> (Link Data) Network Mask: 255.255.255.255
> Number of TOS metrics: 0
> TOS 0 Metrics: 1
>
> R4#sh ip os int lo0
> Loopback0 is up, line protocol is up
> Internet Address 130.130.33.1/24, Area 0.0.0.0
> Process ID 10, Router ID 130.130.33.1, Network Type LOOPBACK, Cost: 1
> Loopback interface is treated as a stub Host
> R4#
>
>
> No matter what I do, it always stays as "Loopback interface is treated as
> a stub Host"
>
>
> Is this a trick question???
>
> I'm losing WAY too much sleep over it..
>
>
> Simon
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