From: Gary Duncanson (gary.duncanson@googlemail.com)
Date: Wed Jul 11 2007 - 07:41:51 ART
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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