From: Sandro Ciffali (sandyccie@xxxxxxxxx)
Date: Mon May 21 2001 - 23:45:15 GMT-3
Can someone tell me the right way of redistributing the /28 network which is
in backbone area however the frame backbone uses a different /28 subnet, And
the /28 network i need to redistribute in igrp is not direclty connected to
asbr, If redistribute connected is wrong then i am real scared
Thanks in advance
Sandro
----- Original Message -----
From: "cao lingwei" <caolw@fosco.com.cn>
To: <sandyccie@yahoo.com>
Sent: Monday, May 21, 2001 10:42 PM
Subject: Re: another redistribution question
> In real lab I redistribute connected,the procotor tell me
> the answer is wrong,because i changed the ospf database,
> I have no answer,I know only that reditribute connected
> is wrong...
> ----- Original Message -----
> From: "Sandro Ciffali" <sandyccie@yahoo.com>
> To: <caolw@fosco.com.cn>
> Sent: Tuesday, May 22, 2001 10:19 AM
> Subject: Re: another redistribution question
>
>
> > could you pls. be more specific???
> >
> > Sandro
> > ----- Original Message -----
> > From: "cao lingwei" <caolw@fosco.com.cn>
> > To: "Sandro Ciffali" <sandyccie@yahoo.com>;
> > <ccielab@groupstudy.com>
> > Sent: Monday, May 21, 2001 9:47 PM
> > Subject: Re: another redistribution question
> >
> >
> > > redistribute connected is wrong,because it will
> > change the ospf
> > database.....
> > > ----- Original Message -----
> > > From: "Sandro Ciffali" <sandyccie@yahoo.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Tuesday, May 22, 2001 9:05 AM
> > > Subject: Re: another redistribution question
> > >
> > >
> > > > Here are my two cents on the topic classless to
> > > > classful redistribution.
> > > > I am assuming the ASBR running ospf and igrp has
> > same
> > > > major network and subnets /24 for igrp and /28 for
> > > > ospf, Ospf backbone is area 0 with a multipoint
> > > > network to the other two and point to point to
> > router
> > > > running igrp
> > > > So when you configure IGRP on this ASBR, the OSPF
> > > > interface (/28) is also running igrp in passive
> > mode.
> > > > Now on this router when you say summary address
> > > > x.x.x.x mask It assumes you are summarizing IGRP
> > > > routes being redistributed into OSPF, The summary
> > > > addresses works fine this way, If you check
> > routing
> > > > tables of the other ospf spokes you would see this
> > > > summary route as E2 route (they would have /28 as
> > > > attached and /24 as E2 summary). Then OSPF
> > > > redistributes this route back in IGRP fine. This
> > is
> > > > kind of confusing, Since summary address is
> > generated
> > > > from redistributed route from igrp and then this
> > > > summary address is redistributed back in igrp, but
> > it
> > > > works fine. This works only for ASBR for no other
> > ospf
> > > > router. Atleast i don't know any simpler way than
> > > > this. For router other than asbr the best way is
> > to
> > > > redistribute connected or someway of brining these
> > > > routes external and summarize them.
> > > >
> > > > Thanks
> > > > Sandro
> > > > ----- Original Message -----
> > > > From: "garry baker" <fallow46@yahoo.com>
> > > > To: "David Anderson" <dma@cisco.com>; "Roman
> > Rodichev"
> > > > <rodic000@hotmail.com>
> > > > Cc: <ccielab@groupstudy.com>
> > > > Sent: Sunday, May 20, 2001 11:31 PM
> > > > Subject: RE: another redistribution question
> > > >
> > > >
> > > > > David,
> > > > >
> > > > > you could try a second ospf process and
> > redistribute
> > > > > your main process into your second and then use
> > the
> > > > > summary-address command and redistribute the
> > second
> > > > > process into igrp. i did something like this
> > > > recently
> > > > > but i had to redistribute both ospf processes to
> > get
> > > > > all my /24 routes into igrp, not too sure why i
> > had
> > > > to
> > > > > do that, does anyone have any ideas?
> > > > >
> > > > > Garry
> > > > > --- David Anderson <dma@cisco.com> wrote:
> > > > > > Roman,
> > > > > > I tried the area 0 range on one of the routers
> > > > that
> > > > > > was one hop away from
> > > > > > the ASBR. However the ASBR is also part of
> > area 0
> > > > > > and I cant seem to get
> > > > > > the summary route to show up in the ASBR or
> > any of
> > > > > > the routers. Any
> > > > > > ideas? I am going to try again and just see
> > if I
> > > > > > missed something.
> > > > > > Thanks,
> > > > > > David
> > > > > > At 09:45 PM 5/20/2001 -0500, Roman Rodichev
> > wrote:
> > > > > >
> > > > > > >Where did you see that command?! I don't
> > think it
> > > > > > exists. :) Summarization
> > > > > > >doesn't make any sense under IGRP. It is
> > > > classful.
> > > > > > >
> > > > > > >ip summary-address can only be done for EIGRP
> > and
> > > > > > RIPv2
> > > > > > >
> > > > > > >roman
> > > > > > >
> > > > > > >
> > > > > > >>From: "Gregory W. Posey Jr."
> > > > <gposey@conects.com>
> > > > > > >>Reply-To: "Gregory W. Posey Jr."
> > > > > > <gposey@conects.com>
> > > > > > >>To: "David Anderson" <dma@cisco.com>,
> > > > > > <ccielab@groupstudy.com>
> > > > > > >>Subject: RE: another redistribution question
> > > > > > >>Date: Sun, 20 May 2001 22:17:39 -0400
> > > > > > >>
> > > > > > >>I believe you use the "summary-address"
> > command
> > > > > > when summarizing between
> > > > > > >>OSPF and another routing protocol.
> > > > > > >>
> > > > > > >>The "area range" command is for when you
> > > > summarize
> > > > > > from one area to the next
> > > > > > >>(on an ABR) within OSPF.
> > > > > > >>
> > > > > > >>To summarize from one protocol (e.g. EIGRP)
> > into
> > > > > > OSPF, use the
> > > > > > >>"summary-address" command under the OSPF
> > > > > > "config-router" mode.
> > > > > > >>
> > > > > > >>For your situation (summarizing from OSPF
> > into
> > > > > > another routing protocol), if
> > > > > > >>IGRP acts the same as EIGRP, then you
> > configure
> > > > it
> > > > > > under the interface
> > > > > > >>"config-if" mode, and the command is...
> > > > > > >>
> > > > > > >>"ip summary-address igrp 101 X.X.X.X
> > Y.Y.Y.Y"
> > > > > > >>
> > > > > > >>Of course either/both command(s) is/are
> > > > configured
> > > > > > on the router that runs
> > > > > > >>both OSPF and IGRP.
> > > > > > >>
> > > > > > >>
> > > > > > >>Thank you,
> > > > > > >>Greg Posey Jr.
> > > > > > >>CONECTS Network Analyst
> > > > > > >>CCNP - Security Specialist
> > > > > > >>Cisco Voice Access Specialist
> > > > > > >>
> > > > > > >>-----Original Message-----
> > > > > > >>From: nobody@groupstudy.com
> > > > > > [mailto:nobody@groupstudy.com]On Behalf Of
> > > > > > >>David Anderson
> > > > > > >>Sent: Sunday, May 20, 2001 9:24 PM
> > > > > > >>To: ccielab@groupstudy.com
> > > > > > >>Subject: another redistribution question
> > > > > > >>
> > > > > > >>
> > > > > > >>Ok, here is my redistribution question:
> > > > > > >>
> > > > > > >>Suppose I have an OSPF area (say area 0)
> > with a
> > > > > > /28 mask and I am
> > > > > > >>redistributing with IGRP which has a /24
> > mask.
> > > > > > Can one summarize the area
> > > > > > >>0 using the area range command on the ASBR?
> > I
> > > > > > tried and could not get it
> > > > > > >>to work. However, what I did get to work
> > was to
> > > > > > create a loopback on
> > > > > > >>another router in my ospf domain using the
> > same
> > > > > > subnet I have in my area 0,
> > > > > > >>but with a /24 mask and then advertised that
> > > > into
> > > > > > ospf and all was well on
> > > > > > >>the IGRP router. I could ping all of my /28
> > > > ospf
> > > > > > interfaces. Does anyone
> > > > > > >>have any suggestions other than this? Did I
> > > > miss
> > > > > > anything?
> > > > > > >>
> > > > > > >>Thanks everyone,
> > > > > > >>David
> > > > > > >>David Anderson
> > > > > > >>Network Design Engineer
> > > > > > >>Enterprise Solutions Architecture & Design
> > > > > > >>(408) 853-5515
> > > > > > >>dma@cisco.com
> > > > > > >> | |
> > > > > > >> ..:|||||||:...:|||||||:..
> > > > > > >>C I S C O S Y S T E M S
> > > > > > >>**Please
> > > > > >
> > read:http://www.groupstudy.com/list/posting.html
> > > > > > >>**Please
> > > > > >
> > read:http://www.groupstudy.com/list/posting.html
> > > > > >
> > > > >
> > > >
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