Re: filtering in eigrp

Here is additional information from what has been provided in the eariler
threads specific to EIGRP support for route-map filtering:

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t8/feature/guide/gteigrpr.html

Also keep in mind unlike OSPF networks where you really should only filter
on ABR or ASBR boundary routers, in EIGRP you can filter on any router in
the network. The reason I say "you really should filter only on ABR or ASBR
boundary routers in OSPF" is due to the OSPF capability or knob that allows
filtering out routes sourced from the OSPF database and destined for the
routing table or RIB. The RFC: http://www.faqs.org/rfcs/rfc2328.html states
"Each OSPF router maintains an identical database describing the Autonomous
System's topology". This is not the case in EIGRP.

Steve Lyons

On Fri, Aug 21, 2009 at 4:25 PM, Tony Varriale
<tvarriale_at_flamboyaninc.com>wrote:

> With the distance command? I'm not familiar with that.
>
>
>
> From: Narbik Kocharians [mailto:narbikk_at_gmail.com]
> Sent: Friday, August 21, 2009 1:59 PM
> To: Tony Varriale
> Cc: Cisco certification
> Subject: Re: filtering in eigrp
>
>
>
> Don't forget the metric with deviation
>
> On Fri, Aug 21, 2009 at 10:56 AM, Tony Varriale <
> tvarriale_at_flamboyaninc.com>
> wrote:
>
> The distance eigrp command only works for internal eigrp routes.
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> Mark
> Matters
> Sent: Friday, August 21, 2009 12:45 PM
> To: Narbik Kocharians
> Cc: Iwan Hoogendoorn; Cisco certification
> Subject: Re: filtering in eigrp
>
> Narbik,
>
> I have tried this and it did not change the distance. I tried changing the
> distance on a router where I was redistributing eigrp and ospf mutually on
> an EIGRP stub router. I tried changing it in EIGRP and I did not see a
> change. Then I tried it in OSPF and nothing. I'm not sure where I went
> wrong.
>
> I know there are rules as to where you put the distance command but my
> brain
> is like swiss cheese. I pour info in and it all leaks out.
>
>
> On Fri, Aug 21, 2009 at 12:46 PM, Narbik Kocharians
> <narbikk_at_gmail.com>wrote:
>
> > Don't forget the distance command.
> >
> >
> > On Fri, Aug 21, 2009 at 9:39 AM, Mark Matters <markccie_at_gmail.com>
> wrote:
> >
> >> Thanks!!!
> >>
> >> You guys at IPEXPERT are awesome!
> >>
> >>
> >>
> >>
> >> On Fri, Aug 21, 2009 at 12:15 PM, Iwan Hoogendoorn <iwan_at_ipexpert.com
> >> >wrote:
> >>
> >> > Dear Mark,
> >> >
> >> > You can filter EIGRP in the ways you provided
> >> >
> >> > - distribute-list
> >> > - redistribution with a route-map that looks at al prefix-list and/or
> >> > an access-list or you can even tag the route
> >> > - do a summery route
> >> >
> >> > But you can also go for the passive-interface command.
> >> > This way you only can only receive routes from your EIGRP neighbour
> >> > but not send anytin at all ... which is a kind of filtering in the end
> >> > ;-)
> >> >
> >> >
> >> > --
> >> > Regards,
> >> >
> >> > Iwan Hoogendoorn
> >> > CCIE #13084 (R&S / Security / SP)
> >> > Sr. Support Engineer IPexpert, Inc.
>
> >> > URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
> http://www.ipexpert.com/>
> <http://www.ipexpert.com/>
>
> >> >
> >> >
> >> >
> >> > On Fri, Aug 21, 2009 at 5:57 PM, Mark Matters<markccie_at_gmail.com>
> >> wrote:
> >> > > How many ways can I filter routes in EIGRP?
> >> > >
> >> > > distribute-list
> >> > > redistribute / route-map / acl / ip prefix
> >> > > summary
> >> > >
> >> > >
> >> > > Are there any other ways?
> >> > >
> >> > >
> >> > > Blogs and organic groups at http://www.ccie.net
> <http://www.ccie.net/>
> >> > >
> >> > >
> >> _______________________________________________________________________
> >> > > Subscription information may be found at:
> >> > > http://www.groupstudy.com/list/CCIELab.html
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> > >
> >> >
> >> >
> >> >
> >> > --
> >> > Regards,
> >> >
> >> > Iwan Hoogendoorn
> >> > CCIE #13084 (R&S / Security / SP)
> >> > Sr. Support Engineer IPexpert, Inc.
>
> >> > URL: http://www.IPexpert.com <http://www.ipexpert.com/> <
> http://www.ipexpert.com/>
> <http://www.ipexpert.com/>
>
> >>
> >>
> >> Blogs and organic groups at http://www.ccie.net <http://www.ccie.net/>
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> > --
> > Narbik Kocharians
> > CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> > www.MicronicsTraining.com <http://www.micronicstraining.com/> <
> http://www.micronicstraining.com/>
> > Sr. Technical Instructor
>
>
>
> Blogs and organic groups at http://www.ccie.net <http://www.ccie.net/>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
> Blogs and organic groups at http://www.ccie.net <http://www.ccie.net/>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
> Narbik Kocharians
> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
> www.MicronicsTraining.com <http://www.micronicstraining.com/>
> Sr. Technical Instructor
>
>
> Blogs and organic groups at http://www.ccie.net
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html

Blogs and organic groups at http://www.ccie.net
Received on Fri Aug 21 2009 - 16:58:11 ART