From: Sage Vadi (sagevadi@yahoo.co.uk)
Date: Tue Dec 24 2002 - 23:40:45 GMT-3
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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This archive was generated by hypermail 2.1.4 : Fri Jan 17 2003 - 17:21:52 GMT-3