From: Hans (yyao@xxxxxxxxxxxx)
Date: Fri Aug 03 2001 - 02:28:52 GMT-3
Thanks,
Hans
----- Original Message -----
From: "Sandro Ciffali" <sandyccie@yahoo.com>
To: "Hans" <yyao@sympatico.ca>; "Frank B" <buffingf@hawaii.rr.com>
Cc: <ccielab@groupstudy.com>
Sent: Wednesday, August 01, 2001 10:47 PM
Subject: Re: RE: ospf rip redistribution
> Try this out
>
> R3------neta----R1----netb----R2
> neta 172.16.13.0/24, netb 172.16.4.0/22
>
> On R3 creat a loop back with ip address
> 172.16.12.1/24, Keep this loopback on a seperate area
> let us sayy 20, On R3 configure area 20 range
> 172.16.12.0 255.255.252.0
> Now R1 will have two routes, 172.16.13.0/24 as
> directly connected and 172.16.12.0/22 as O IA, This
> route should get redistributed into rip.
>
> Sandro
> --- Hans <yyao@sympatico.ca> wrote:
> > Hi Frank and all,
> >
> > Following is my scenario:
> >
> > --neta---R1---netb--R2
> >
> > Where neta is in ospf and netb is in rip.
> >
> > neta=172.16.13.0/24, netb=172.16.4.0/22
> >
> > I did "summary-address 172.16.12.0 255.255.252.0" on
> > R1. After doing that I checked the routing table on
> > R1 and see:
> >
> > O 172.16.12.0/22 is a summary, 01:05:11, Null0
> >
> > On R1, I redistribute ospf routes into rip, but on
> > R2, I can not see 172.16.12.0/22.
> >
> > But if I put a static routes on R1:
> >
> > ip route 172.16.12.0 255.255.252.0 null0 and
> > redistribute this static route into rip, I can see
> > 172.16.12.0/22.
> >
> > I agree with you on the point that an ospf route:
> > 172.16.12.0/22 should be able to beredistributed in
> > to rip and on R2 I should be able to see
> > 172.16.12.0/22, but I can not.
> >
> > Any clues?
> >
> > Hans
> >
> >
> > > From: "Frank B" <buffingf@hawaii.rr.com>
> > > Date: 2001/07/31 Tue AM 04:57:55 EDT
> > > To: "Hans" <yyao@sympatico.ca>
> > > CC: <ccielab@groupstudy.com>
> > > Subject: RE: ospf rip redistribution
> > >
> > > Hans,
> > > If the router you configured with "summary
> > address 172.16.12.0
> > > 255.255.252.0" is an ASBR and you redistribute
> > ospf into the rip process on
> > > that same router, then this route will pass into
> > rip as long as the
> > > interface has the same mask (assuming it also is
> > within the 172.16.0.0 major
> > > network) Also note that "redistribute connected"
> > isn't required.
> > >
> > > The reason...this is the normal behavior when
> > redistributing
> > > classless<-->classfull routing protocols. Your
> > email below shows it's an
> > > ospf route in the routing table, so if it's within
> > the same major network
> > > and has the same mask as the interface in the rip
> > domain it will
> > > redistribute.
> > >
> > > O 172.16.12.0/22 is a summary, 01:05:11,
> > Null0
> > >
> > >
> > > I believe your statement "I think the only way of
> > summarizing ospf route on
> > > an ASBR is to use static route pointing to null0."
> > is not true. I hope you
> > > understand why...Frank
> > >
> > > Please read this:
> > http://www.cisco.com/warp/public/105/54.html
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com
> > [mailto:nobody@groupstudy.com]On Behalf Of
> > > Hans
> > > Sent: Monday, July 30, 2001 7:08 PM
> > > To: Jay Chandradas; ccielab@groupstudy.com
> > > Subject: Re: ospf rip redistribution
> > >
> > >
> > > Hi All,
> > >
> > > I can use "summary address 172.16.12.0
> > 255.255.252.0" to generate a route,
> > > though it point to null0, but it is not direct
> > connected. Here it is:
> > >
> > > O 172.16.12.0/22 is a summary, 01:05:11,
> > Null0
> > >
> > > Though it was generated on the local router, it
> > was an intra area ospf
> > > route, not a direct connected route.
> > >
> > > So it can not be redistributed into ospf by using
> > "redistribute connected
> > > subnet".
> > >
> > >
> > > I think the only way of summarizing ospf route on
> > an ASBR is to use static
> > > route pointing to null0.
> > >
> > > Hans
> > >
> > >
> > > ----- Original Message -----
> > > From: "Jay Chandradas" <jachandr@cisco.com>
> > > To: <yyao@sympatico.ca>; <ccielab@groupstudy.com>
> > > Sent: Monday, July 30, 2001 2:35 PM
> > > Subject: Re: ospf rip redistribution
> > >
> > >
> > > > On R1 try a
> > > > router ospf 100
> > > > redistribute connected subnet
> > > > Then try the same summary address that ypu used
> > on the router. You should
> > > > see the corresponding route pointing to Null 0
> > and it should work.
> > > >
> > > > Hope this helps.
> > > > Jay.
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: <yyao@sympatico.ca>
> > > > To: <ccielab@groupstudy.com>
> > > > Sent: Monday, July 30, 2001 9:03 AM
> > > > Subject: ospf rip redistribution
> > > >
> > > >
> > > > > All,
> > > > >
> > > > > I got a question on ospf and rip
> > redistribution.
> > > > >
> > > > > ----RIP-----R1------OSPF---------
> > > > > where rip=128.103.36.0/24
> > > > > where ospf=128.103.35.0/25
> > > > >
> > > > > How can I redistribute ospf routes into rip
> > without using static route?
> > > > >
> > > > > I know ospf route need to be summarized into
> > slash 24 before it can be
> > > > redistributed into rip.
> > > > >
> > > > > My question is: Can I use "summary address
> > 128.103.35.0 255.255.255.0"
> > > > command in ospf to geneteate 128.103.35.0/24
> > routes and redistribute ospf
> > > > into rip? I have tried, but it did not work. I
> > can make it work by using
> > > > static route:ip route 128.103.35.0 255.255.255.0
> > null0 and redistribute
> > > the
> > > > static route into rip.
> > > > >
> > > > > Why "summary address..." is not working in
> > this case?
> > > > > **Please
> > read:http://www.groupstudy.com/list/posting.html
> > > > **Please
> > read:http://www.groupstudy.com/list/posting.html
> > > **Please
> > read:http://www.groupstudy.com/list/posting.html
> > **Please
> > read:http://www.groupstudy.com/list/posting.html
> >
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