From: Brian McGahan (brian@cyscoexpert.com)
Date: Thu Jan 09 2003 - 18:58:59 GMT-3
Instead of changing the distance of the external EIGRP route,
just change the distance of the competing route. For example, if you
have a prefix in OSPF with a distance of 110, and a matching external
EIGRP prefix, just change the OSPF distance to 171.
When changing distances to influence routing, I usually
recommend lowering the distance of the protocol that is higher. The
reason for this is so that when you look at the routing table, you can
see that this prefix has a lower distance for a reason. For example, if
you have a RIP prefix competing with an OSPF prefix, and you want to
route through RIP, change the distance of this prefix to 109. When you
look in the routing table, you will remember that you lowered the RIP
prefix to win over the OSPF route. Since OSPF is 110, the 109 would be
the indicator that OSPF is the competing protocol. With external EIGRP,
you do not have this option. Therefore you should raise the prefix in
protocol with the lower distance to 171 or above.
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Aidan Marks
> Sent: Thursday, January 09, 2003 2:33 PM
> To: Desmond
> Cc: Joe Chang; ccielab@groupstudy.com
> Subject: Re: changing AD for EIGRP External Route (D EX)
>
> This is correct, there is no way right now to change the AD of
selected
> eigrp external routes, it's all or nothing with the distance eigrp x x
> command.
>
> Therefore doing something like "distance 170 10.20.30.40 0.0.0.0 100"
> won't
> work for externals as it applies only to internal routes.
>
> Aidan
>
> At 06:14 AM 10/01/2003, Desmond wrote:
>
> >The distance command only work for routes "D", not "D EX".
> >
> >----- Original Message -----
> >From: "Joe Chang" <changjoe@earthlink.net>
> >To: <ccielab@groupstudy.com>
> >Sent: Thursday, January 09, 2003 11:59 AM
> >Subject: Re: changing AD for EIGRP External Route (D EX)
> >
> >
> > > Hmm, route tagging wouldn't work, the "distance" command doesn't
allow
> for
> > > matching tags, and policy routing doesn't allow for setting AD.
> > >
> > > Your'e best bet is to set the distance command for the specific
> routes.
> > >
> > > ----- Original Message -----
> > > From: "Desmond" <cciestudy@sympatico.ca>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Thursday, January 09, 2003 12:45 PM
> > > Subject: Re: changing AD for EIGRP External Route (D EX)
> > >
> > >
> > > > Sorry, I missed something.
> > > >
> > > > I meant from particular source.
> > > >
> > > > ----- Original Message -----
> > > > From: "Desmond" <cciestudy@sympatico.ca>
> > > > To: <ccielab@groupstudy.com>
> > > > Sent: Thursday, January 09, 2003 11:37 AM
> > > > Subject: changing AD for EIGRP External Route (D EX)
> > > >
> > > >
> > > > > Is there any way to change the admin distance for EIGRP D EX
> routes ?
> > > > >
> > > > >
> > > > > Thanks
> > > > >
> > > > > Desmond
> > > > > .
> > > > .
> > > .
> >.
> .
.
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