From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Wed Jul 11 2007 - 18:12:35 ART
And that's it? It only works with default routes generated by ip default
network on the router, or on another router and redistributed into that
router..i.e D EX
----- Original Message -----
From: "Antonio Soares" <amsoares@netcabo.pt>
To: "'Ivan'" <ivan@iip.net>; <ccielab@groupstudy.com>; "'Gary Duncanson'"
<gary.duncanson@googlemail.com>
Cc: "'Ben'" <bmunyao@gmail.com>; <dayo@ademuyiwa.com>; <mmma@gawab.com>
Sent: Wednesday, July 11, 2007 9:57 PM
Subject: RE: How is default-information command under router eigrp used?
> Yes, i've confirmed that these commands only work for the *D or *D EX
> candidates default routes generated by the "ip default-network x.x.x.x"
> command.
>
> Thanks.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Ivan
> Sent: quarta-feira, 11 de Julho de 2007 16:25
> To: ccielab@groupstudy.com; Gary Duncanson
> Cc: Ben; dayo@ademuyiwa.com; mmma@gawab.com
> Subject: Re: How is default-information command under router eigrp used?
>
> "no default-information originate" doesn't affect on the 0.0.0.0 any way.
> This
> command used to permit or deny "default route" wich marked "*". Such route
> can be created
> ip default-network x.x.x.x
>
> So try this on a lab:
> R1:
> R1(config)#int lo 0
> R1(config-if)#ip address 1.1.1.1 255.255.255.0
> R1(config)#ip default-network 192.192.192.0
> R1(config)#ip route 192.192.192.0 255.255.255.0 1.1.1.100
> R1#sh ip route | i Gate|S\*
> Gateway of last resort is 1.1.1.100 to network 192.192.192.0
> S* 192.192.192.0/24 [1/0] via 1.1.1.100
>
>
> R1 --- (eigrp) --- R2
> R1 redistribute static
>
> R2:
> R2#sh ip route | i Gate|\*
> ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> Gateway of last resort is 192.168.12.1 to network 192.192.192.0
> D*EX 192.192.192.0/24 [170/156160] via 192.168.12.1, 00:02:34,
> FastEthernet0/0
> ^^^
> "*" means - use this route as default.
>
> R2#conf t
> R2(config)#router eigrp 100
> R2(config-router)#no default-information in
> R2#clear ip eigrp neighbors
> *Jul 11 19:23:45.427: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> 192.168.12.1 (FastEthernet0/0) is down: manually cleared
> *Jul 11 19:23:45.823: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> 192.168.12.1 (FastEthernet0/0) is up: new adjacency
> R2#sh ip route | i Gate|\*
> ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> Gateway of last resort is not set
> ^^^
> Here we see that default route is disappear.
>
>
>
> On Wednesday 11 July 2007 14:41, Gary Duncanson wrote:
>> Ben,
>>
>> I haven't played with this myself.
>>
>> Perhaps it's used when you want to control the default you will learn
>> from
>> a peer in the same AS. From the terminology in the command reference it
>> seems to allude to uses when you have two diifferent EIGRP AS's and want
>> some measure of control.
>>
>> default-information
>> To control the candidate default routing information between IGRP or
>> EIGRP
>> processes, use the default-information command in router configuration
>> mode. To suppress IGRP or EIGRP candidate information in incoming or
>> outbound updates, use the no default-information in command.
>>
>> default-information {in | out} {access-list-number | name}
>>
>> no default-information {in | out}
>>
>> ----- Original Message -----
>> From: "Ben" <bmunyao@gmail.com>
>> To: "Mohamed M Moustafa" <mmma@gawab.com>
>> Cc: <dayo@ademuyiwa.com>; "Cisco certification" <ccielab@groupstudy.com>
>> Sent: Wednesday, July 11, 2007 11:16 AM
>> Subject: Re: How is default-information command under router eigrp used?
>>
>> > Thank you Mohamed.
>> >
>> > You are quite right that eigrp does not use "default-information
>> > originate"
>> > command. Instead you redistribute a static default, or use the
>> > interface
>> > "ip
>> > summary-add eigrp 100 0.0.0.0 0.0.0.0" command.
>> >
>> > The command I'm struggling with is "default-information in|out acl".
>> >
>> > Here is a scenario:
>> >
>> >
>> > 10.1.1.1 10.1.2.1 10.1.2.2
>> >
> ----eigrp--------(f0/0)R1(s0/0)-----------eigrp----------------(s0/0)R2--
>> >--------rip----------
>> >
>> > R1
>> > int f0/0
>> > ip add 10.1.1.1 255.255.255.0
>> > int s0/0
>> > ip add 10.1.2.1 255.255.255.0
>> > ip summary-add eigrp 100 0.0.0.0 0.0.0.0
>> > router eigrp 100
>> > net 10.1.2.1 0.0.0.0
>> > net 10.1.1.1 0.0.0.0
>> >
>> > R2
>> > int s0/0
>> > ip add 10.1.2.2 255.255.255.0
>> > router eigrp 100
>> > net 10.1.2.2 0.0.0.0
>> >
>> > In the above scenario R2 will accept the default route from R1. What
>> > circumstance would require us to use the "default-information in acl"
>> > command then?
>> >
>> > Ben
>> >
>> > On 7/11/07, Mohamed M Moustafa <mmma@gawab.com> wrote:
>> >> Hi,
>> >>
>> >> EIGRP don't utilize the default-information originate command, to
>> >> advertise
>> >> default information --> add the default route statically and the do
>> >> redistribution.
>> >>
>> >> Normally, exterior/default routes are always accepted and default
>> >> information is passed between EIGRP processes when redistribution
>> >> occurs. when doing so, we still need to confirm the following command
> to
>> >> either allow the sending or receiving of a default route (allowed by
>> >> default):
>> >>
>> >> Router(config-router)#default-information ?
>> >> allowed Allow default information
>> >> in Accept default routing information
>> >> out Output default routing information
>> >>
>> >>
>> >> HTH,
>> >> Mohammed Mahmoud.
>> >>
>> >> Ben <bmunyao@gmail.com> wrote on 11 Jul 2007, 12:27 PM:
>> >> Subject: Re: How is default-information command under router eigrp
> used?
>> >>
>> >> >Dayo,
>> >> >
>> >> >Thanks for responding.
>> >> >
>> >> >In eigrp, the syntax for this command is:
>> >> >
>> >> >router eigrp 100
>> >> > default-information {allowed[in|out]|in|out [acl]}
>> >> >
>> >> >I'm having trouble figuring out how to use it, and scenarios that
>> >> > apply.
>> >> >
>> >> >Ben
>> >> >
>> >> >On 7/11/07, dayo@ademuyiwa.com <dayo@ademuyiwa.com> wrote:
>> >> >> Do you mean default information originate?
>> >> >>
>> >> >> On 7/11/07, Ben <bmunyao@gmail.com> wrote:
>> >> >> > Hi
>> >> >> >
>> >> >> > I cann't seem to make sense of how to use the
> "default-information"
>> >> >>
>> >> >> command
>> >> >>
>> >> >> > under EIGRP. Does anyone here have examples of its usage that
> might
>> >> >
>> >> >help
>> >> >
>> >> >> me
>> >> >>
>> >> >> > digest this command.
>> >> >> >
>> >> >> > TIA
>> >> >> >
>> >> >> > Ben
>> >>
>> >> _______________________________________________________________________
>> >>
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