Re: simple question regarding the Routing Table.

From: Narbik Kocharians (narbikk@gmail.com)
Date: Mon Mar 30 2009 - 13:24:12 ART

You must be missing something, please show all the configs

On Mon, Mar 30, 2009 at 9:15 AM, Cisco Fanatic <ebay_products@hotmail.com>wrote:

> !
> int loop0
> ip add 5.5.5.5 255.255.255.252
> !
> router ospf 1
> redistribute connected subnets route-map LOOP0
> !
> route-map LOOP0 permit 10
> match interface Loopback0
> !
>
> still seeing 5.5.5.5/32 instead of 5.5.5.5/30?
>
>
>
> > Date: Mon, 30 Mar 2009 17:12:38 +0530
> > Subject: Re: simple question regarding the Routing Table.
> > From: gauravmadan1177@gmail.com
> > To: raghavbhargava12@gmail.com
> > CC: ccielab@groupstudy.com
> >
> > Most questions asked by Raghav are already answered , Just adding my
> > specific opinon on this
> >
> > There are a few ways that u need to keep in mind regarding /24 , /32
> funda
> > and conversion :
> >
> > [A] LOOPBACK network type is always adv with /32 .
> >
> > For converting this to right mask :
> >
> > [A] Adv it as point to point network type
> >
> > if this is denied
> >
> > [B] Adv this as external route .
> >
> > if this is denied
> >
> > [C] Adv this in a given area and then summarize this area as /24 ( area
> <>
> > range )
> >
> > if this is denied
> >
> > [D] Adv this loopback in alltogether diff ospf process and do
> redistribution
> > in 2 ospf processes created ,
> >
> > These are things that were there my study notes :)))) Ifsomeone has more
> > ideas ; please pour in :)
> >
> > HTH
> > Gaurav Madan
> > CCIE # 23863
> >
> >
> > On Mon, Mar 30, 2009 at 3:16 AM, Raghav Bhargava
> <raghavbhargava12@gmail.com
> > > wrote:
> >
> > > Hi Experts,
> > >
> > > For example we have a loopback interface 0 with the Ip address
> 4.4.4.4/24
> > >
> > > Now when we have to advertise the network in the routing table, which
> of
> > > the
> > > following way is correct:-
> > >
> > > router ospf 1
> > > network 4.4.4.4 0.0.0.0 area 4
> > >
> > > OR
> > >
> > > router ospf 1
> > > network 4.4.4.0 0.0.0.255 area 4
> > >
> > > coz if we use any of the way we will see this entry in the routing
> table:-
> > >
> > > *4.0.0.0/32* is subnetted, 1 subnets
> > > O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
> > >
> > > Now another question that I have is if i change the network type of the
> > > loopback from LOOPBACK ( which is default ) to point-to-point then the
> > > routing table entry changes like this
> > >
> > > *4.0.0.0/24 *is subnetted, 1 subnets
> > > O 4.4.4.4 [110/2] via 1.1.1.1, 00:00:44, FastEthernet0/0
> > >
> > > Please can some one explain this change in the subnet mask????
> > >
> > > As far as i know PPP converts the /24 or any other subnet into /32
> host
> > > routes. Maybe i could be wrong here......:)
> > >
> > >
> > > --
> > > Warm Regards
> > > Raghav
> > >
> > >
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> >
> >
> >
> >
>
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-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
www.Net-Workbooks.com
Sr. Technical Instructor

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