From: Salau, Yemi (yemi.salau@siemens.com)
Date: Wed Jul 11 2007 - 07:43:41 ART
Remember default-information command is not only meant for dafault
routes, and there is nothing like no default-originate under eigrp
process, on Cisco Routers anyway as of 12.4; maybe you're trying to say,
no default-information out, that way, R2 will not redistribute EIGRP
10's D EX and default routes to EIGRP 20 neighbors.
To control which of the D EX and default routes not to redistribute to
EIGRP 20, use ACL to match those. Like I said before, Cisco brought in
the acl option since 11.2 (generally released for public viewing :-))
Many Thanks
Yemi Salau
________________________________
From: Ben [mailto:bmunyao@gmail.com]
Sent: Wednesday, July 11, 2007 11:32 AM
To: Salau, Yemi
Cc: dayo@ademuyiwa.com; Cisco certification
Subject: Re: How is default-information command under router eigrp used?
Yemi,
Thanks for responding. Here's an attempt at putting your explanation
into a scenario
10.1.1.1 10.1.2.1 10.1.2.2
10.1.3.1
----eigrp10------(f0/0)R1(s0/0)-----------eigrp10-------------(s0/0)R2(f
0/0)---eigrp20--
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 10
net 10.1.2.1 0.0.0.0
net 10.1.1.1 0.0.0.0
R2
int f0/0
ip add 10.1.3.1 255.255.255.0
int s0/0
ip add 10.1.2.2 255.255.255.0
router eigrp 10
net 10.1.2.2 0.0.0.0
redistr eigrp 20
router eigrp 20
net 10.1.3.1 0.0.0.0
redistr eigrp 10
no default-originate out
R2 is receiving a default from R1 on process eigrp10, and redistributing
to process eigrp20. Would the use of this command as indicated then
prevent R2 from sending the default into eigrp20? If yes, how do ACLs
fit in?
Ben
On 7/11/07, Salau, Yemi <yemi.salau@siemens.com> wrote:
> Normally and by default, exterior routes are always accepted and
default
> information is passed between EIGRP processes when redistribution
> occurs. i.e you have the command turned on: "default-information in"
but
> hidden in the IOS I believe.
>
> Let's say redistributing RIP or another EIGRP Process A into another
> EIGRP Process B, by default all the external routes and default
> information goes into the EIGRP Process B, but you can use this
command
> {"no default-information in/out"} to suppress or not accept exterior
or
> default routing information in incoming or outbound updates. In other
> words, you can stop your EIGRP Process from receiving or sending out
> exterior updates and default routes.
>
> Hope this helps ... :-)
>
> Many Thanks
>
> Yemi Salau
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto: nobody@groupstudy.com
<mailto:nobody@groupstudy.com> ] On Behalf Of
> Ben
> Sent: Wednesday, July 11, 2007 10:28 AM
> To: dayo@ademuyiwa.com; Cisco certification
> 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
> > >
> > >
>
This archive was generated by hypermail 2.1.4 : Sat Aug 18 2007 - 08:17:40 ART