From: Rajeev Siddappa (raj_lab@xxxxxxxxx)
Date: Fri Jan 11 2002 - 03:31:05 GMT-3
I think it has got some thing to do with the mask you
have specified along with the Network command. I am
trying to reseach on this but no results.
Is there some thing like RFP for IGRP and EIGRP, we
can refer to. whcih an really solve our problem.
Any one know the answer, pls comment.
Rajeev.
--- CCIE Lab <labccie@yahoo.com> wrote:
> good, but why didn't it also create a summary route
> to
> null for 168.71.0.0 subnets?
>
> --- j killion <jkillion1977@yahoo.com> wrote:
> > Once you added the "auto-summary" cmd, EIGRP will
> > now
> > summarize at network boundaries - in this case at
> > 20.0.0.0/8. It creates the summary pointing to
> > Null0
> > to stop routing loops from forming.
> >
> >
> > --- Steven <adream@163.com> wrote:
> > > On one router which runs eigrp only ,the config
> > and
> > > route table is as follows,
> > >
> > > sh run
> > > ...
> > > router eigrp 1
> > > network 20.0.0.0
> > > network 168.71.7.0 0.0.0.255
> > > network 168.71.9.0 0.0.0.255
> > > no auto-summary
> > > no eigrp log-neighbor-changes
> > >
> > > ...
> > >
> > > 168.71.0.0/24 is subnetted, 4 subnets
> > > C 168.71.9.0 is directly connected,
> Serial1
> > > C 168.71.7.0 is directly connected,
> Serial0
> > > D 168.71.6.0 [90/20768000] via 168.71.9.1,
> > > 00:00:17, Serial1
> > > D 168.71.5.0 [90/20384000] via 168.71.9.1,
> > > 00:00:17, Serial1
> > > 20.0.0.0/24 is subnetted, 1 subnets
> > > C 20.1.1.0 is directly connected,
> Loopback0
> > >
> > >
> > > after i add "auto-summary "command under router
> > > eigrp 1
> > >
> > > the route table change to the following one ,
> > >
> > > 168.71.0.0/24 is subnetted, 4 subnets
> > > C 168.71.9.0 is directly connected,
> Serial1
> > > C 168.71.7.0 is directly connected,
> Serial0
> > > D 168.71.6.0 [90/20768000] via 168.71.9.1,
> > > 00:00:03, Serial1
> > > D 168.71.5.0 [90/20384000] via 168.71.9.1,
> > > 00:00:03, Serial1
> > > 20.0.0.0/8 is variably subnetted, 2
> subnets,
> > 2
> > > masks
> > > D 20.0.0.0/8 is a summary, 00:00:01, Null0
> > > C 20.1.1.0/24 is directly connected,
> > Loopback0
> > >
> > >
> > > i just want to know what "D 20.0.0.0/8 is
> a
> > > summary, 00:00:01, Null0"
> > > mean.Why is it added?
> > >
> > >
> > >
> > > Thanks.
> > >
> >
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:56:24 GMT-3