From: Sage Vadi (sagevadi@yahoo.co.uk)
Date: Wed Dec 25 2002 - 02:04:40 GMT-3
Mike,
As per -
http://www.cisco.com/warp/public/104/3.html
"In IOS 12.1(6) and higher, the discard route is
automatically generated by default. If for any reason
you don't want to use this discard route, you can
configure.."
Then it goes on to state no discard-route x
Warm regards,
Sage
--- miken <miken@sisna.com> wrote: > What version of
code are you guys running? 12.1(3)T
> and 12.1(15) enterprise
> do not accept that command and I am not able to find
> anything on the doc cd
> or web site referring to it either.
>
> Thanks,
> Mike
> ----- Original Message -----
> From: "Sage Vadi" <sagevadi@yahoo.co.uk>
> To: "OhioHondo" <ohiohondo@columbus.rr.com>; "Tran
> Tien Phong"
> <PhongTT2@FPT.COM.VN>; <ccielab@groupstudy.com>
> Sent: Tuesday, December 24, 2002 7:40 PM
> Subject: RE: OSPF: remove NULL from summary
>
>
> > Ohio,
> >
> > On R3 summarised route entry from R4
> >
> > 140.140.0.0/22 is subnetted, 1 subnets
> > O IA 140.140.0.0 [110/65] via 116.16.34.4
> >
> > 116.16.34.4 = R4's directly connected int/IPadd
> >
> > On R4 -
> >
> > !
> > router ospf 1
> > no discard-route internal <-- removes null
> > ~ cut ~
> > network 140.140.1.0 0.0.0.255 area 30 Summarised
> > network 140.140.2.0 0.0.0.255 area 30 "
> > network 140.140.3.0 0.0.0.255 area 30 "
> > !
> >
> > Networks 140.140.1-3 summarised into /22 (exact
> > summary). As per snippet from R3.
> >
> > Q) Are all you routes EXACT summaries?
> >
> > rgds,
> > Sage
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > --- OhioHondo <ohiohondo@columbus.rr.com> wrote:
> >
> > Sage
> > >
> > > When I get that lab back up, maybe this week,
> I'll
> > > show you the config and
> > > the IP routing table.
> > >
> > > When your summaries remain, what is their next
> hop
> > > address???
> > >
> > > Thanks for your help/response.
> > >
> > > Happy Holidays
> > >
> > > -----Original Message-----
> > > From: Sage Vadi [mailto:sagevadi@yahoo.co.uk]
> > > Sent: Tuesday, December 24, 2002 9:25 PM
> > > To: OhioHondo; Tran Tien Phong;
> > > ccielab@groupstudy.com
> > > Subject: RE: OSPF: remove NULL from summary
> > >
> > >
> > > Ohio,
> > >
> > > I have tried this on externally distributed
> routes
> > > (via redistribution) and via internal (another
> > > area).
> > > For the externally redistributed routes I used
> "no
> > > discard external" and for the internal used "no
> > > discard internal".
> > >
> > > They both got rid of null entries in their
> routing
> > > tables, and their summaries were still
> propagated.
> > >
> > > So it all worked well.
> > >
> > > Your experience is strange and goes against the
> > > grain.
> > > Maybe do a bit more checking with your config
> etc.
> > > or
> > > if you can post it. Or do a console log so we
> can
> > > see
> > > what happens when you insert the command.
> > >
> > >
> > > --- OhioHondo <ohiohondo@columbus.rr.com>
> wrote: >
> > > I
> > > tried this in my lab and the "no discard-route
> > > > internal" command deleted
> > > > all of my "area xx range" summaries. In other
> > > words
> > > > it acted like a switch
> > > > that did not allow summarization. Is this your
> > > > experience also?
> > > >
> > > > (Not defining area ranges at all has the same
> > > effect
> > > > as using this command.)
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com
> > > > [mailto:nobody@groupstudy.com]On Behalf Of
> > > > Tran Tien Phong
> > > > Sent: Tuesday, December 24, 2002 3:52 AM
> > > > To: Sage Vadi; ccielab@groupstudy.com
> > > > Subject: RE: OSPF: remove NULL from summary
> > > >
> > > >
> > > > Use the "no discard-route [internal|external]"
> > > > command
> > > >
> > > > -----Original Message-----
> > > > From: Sage Vadi [mailto:sagevadi@yahoo.co.uk]
> > > > Sent: Tuesday, December 24, 2002 2:18 PM
> > > > To: ccielab@groupstudy.com
> > > > Subject: OSPF: remove NULL from summary
> > > >
> > > > Merry Christmas and Happy New Year!!! I can't
> find
> > > > anything else better to do than to play with
> my
> > > > routers. Such an ejoyable experience! =)
> > > >
> > > > My question -
> > > >
> > > > When using "area range" OR "summary address"
> we
> > > get
> > > > destinations to NULL in our routing table.
> > > >
> > > > Q) Is there a way we can eliminate the
> creation of
> > > a
> > > > summary route pointing to null0?
> > > >
> > > > Warm regards,
> > > > Sage
> > > >
> > > >
> > > >
> > > >
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> > > >
> > >
> >
>
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