From: Godswill Oletu (oletu@inbox.lv)
Date: Thu Jul 14 2005 - 10:59:19 GMT-3
Tim,
The loopback interface will not accept 'broadcast' or 'point-to-multipoint'
network interface type. Point-to-point is the only network type that can be
used.
If you try to configure any other network type apart from 'Point-to-point'
on the loopback interface, the router will yell at you and complain that he
did not like your command.
R1(config)#int loopback0
R1(config-if)#
R1(config-if)#ip ospf network point-to-multipoint
OSPF: Invalid type for interface
R1(config-if)#
R1(config-if)#ip ospf network broadcast
OSPF: Invalid type for interface
R1(config-if)#
R1(config-if)#ip ospf network non-broadcast
OSPF: Invalid type for interface
R1(config-if)#
R1(config-if)#ip ospf network point-to-point
R1(config-if)#
Thanks.
Godswill Oletu
----- Original Message -----
From: "ccie2be" <ccie2be@nyc.rr.com>
To: "'Godswill Oletu'" <oletu@inbox.lv>; "'De Witt, Duane'"
<duane.dewitt@siemens.com>; "'Group Study'" <ccielab@groupstudy.com>
Sent: Thursday, July 14, 2005 7:50 AM
Subject: RE: OSPF Loopbacks
> Hey Godswill,
>
> You're right about those 3 methods. But, as I was reading your post, you
> made me wonder about the first method of changing the network type.
>
> I've always changed the network type to p2p. But, thinking about this, it
> occurs to me that some of the other network types would also work. I
> haven't tried it but would the nbma or broadcast net types also work?
>
> TIA, Tim
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Godswill Oletu
> Sent: Thursday, July 14, 2005 4:20 AM
> To: De Witt, Duane; Group Study
> Subject: Re: OSPF Loopbacks
>
> Duane,
>
> You must be referring to the methods of making the OSPF route not to
> appear
> as a host address (/32) in the routing table but to appear with the mask
> you
>
> configured it with.
>
> They are three methods as you said, but I have not labbed all three to
> verify them:
>
> 1. Change the ospf network type of the loopback interface.
> 2. Summarize the address.
> 3. redistributed connected.
>
> ---
> Godswill Oletu
>
>
>
> ----- Original Message -----
> From: "De Witt, Duane" <duane.dewitt@siemens.com>
> To: "Group Study " <ccielab@groupstudy.com>
> Sent: Wednesday, July 13, 2005 8:16 AM
> Subject: OSPF Loopbacks
>
>
>> Hi
>>
>>
>>
>> In IPExpert under OSPF they mention there are three ways to get the full
>> mask of a loopback interface into OSPF. What are they?
>>
>>
>>
>> Regards
>>
>> Duane
>>
>>
>>
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