Re: simple question regarding the Routing Table.

From: Raghav Bhargava (raghavbhargava12@gmail.com)
Date: Mon Mar 30 2009 - 13:54:17 ART

yeah agree with narbik... please show the config on your box....

raghav

On Mon, Mar 30, 2009 at 9:24 AM, Narbik Kocharians <narbikk@gmail.com>wrote:

> 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
>> > >
>> > >
>> > > Blogs and organic groups at http://www.ccie.net
>> > >
>> > >
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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
> 

-- 
Warm Regards
Raghav

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