From: Alan Basinger (abasinge@xxxxxxxxxx)
Date: Sun Jan 21 2001 - 22:00:57 GMT-3
To remove the statement and route from your router after using the ip
default-network command you have to tell it "no ip route x.x.x.x" then clear
the ip route table. It will disappear and you can try again.
If you look at your config after using the command it places a static route
in your config if done incorrectly. Kind of weird but I fought this battle a
few weeks ago.
Alan Basinger
Systems Engineer
SBC DataComm
Houston Texas
abasinge@swbell.net
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Kevin Baumgartner
Sent: Sunday, January 21, 2001 5:36 PM
To: nigel_taylor@hotmail.com
Cc: ccielab@groupstudy.com
Subject: Re: IGRP/EIGRP/OSPF redistribution cont'd....
So this is a common problem most people make when using ip default network.
The address you use has to be different major network than is being
used by IGRP. So in your case 172.17.0.0 (subnet 172.17.59.0) is already
part of IGRP. Don't use this as the default network. Otherwise you will
get this wierd route.
Use something like 172.18.0.0 as the ip default network. And make sure this
route is in the IGRP routing table.
A few ways to do this
1. Static route to null0 and redistribute static into to IGRP.
Not likely a good way to do it for the lab.
2. Create a loopback interface and redistribute connected into IGRP.
3. Redistribute from another routing protocol (OSPF).
Now getting rid of this route isn't easy. I think you can do "no
default-network 172.17.0.0", or "no ip route". I found that I then had
to save and reload the router.
Kevin
>
> All,
> In using the "ip default-network" command to try and have a
default
> route passed into my IGRP routing domain to my OSPF domain. I don't
> see the command in the config for it, what I do get is this..a static
route
> to an interface that doesn't exist.
>
> The command I issued was: ip default-network 172.17.59.0 and added
> this network under the IGRP process in question, what I get this in the
> config is......
>
> ip route 172.17.0.0 255.255.0.0 172.17.59.0
>
> The weird thing is I can't get it out even after using the "no ip
> default-network"
> command. The only way I've been able to get it out is by doing a "wr
erase"
> and reloading the router.
>
> Has anyone experienced this before....Please tell me what I'm doing wrong.
>
> Nigel.
>
>
>
> ----- Original Message -----
> From: David FAHED <dfahed@outremer.com>
> To: Nigel Taylor <nigel_taylor@hotmail.com>
> Cc: <ccielab@groupstudy.com>; Chuck Larrieu <chuck@cl.cncdsl.com>
> Sent: Sunday, January 21, 2001 2:51 PM
> Subject: Re: IGRP/EIGRP/OSPF redistribution cont'd....
>
>
> > So you can summarize the 172.17.59.0/29 with a /26 when redistribute
EIGRP
> in
> > ospf (R3). On R1 you can create another ospf process make a mutual
> > redistribution between the 2 ospf process with a double summarization
> > 172.17.59.0/26 and 172.17.59.64/26 when come back to the original ospf
> process.
> >
> >
> >
> >
> > Nigel Taylor wrote:
> >
> > > David,
> > > Another part of the lab requirements also said "NO"
> static
> > > routes could be configured.. So I'm read through like every book I've
> > > got... and checking like every IGRP doc on CCO for and answer...
> > >
> > > Thoughts anyone.....?
> > >
> > > Thanks
> > >
> > > Nigel..
> > >
> > > ----- Original Message -----
> > > From: David FAHED <dfahed@outremer.com>
> > > To: Nigel Taylor <nigel_taylor@hotmail.com>; <ccielab@groupstudy.com>
> > > Sent: Sunday, January 21, 2001 2:24 PM
> > > Subject: Re: IGRP/EIGRP/OSPF redistribution cont'd....
> > >
> > > > Your IGRP is configured with a /26 so you can not see any with a
mask
> > > different
> > > > /26. So you will not see 172.17.59.48/28, 172.17.59.68/30 and
> > > 172.17.59.0/29.
> > > > The solution is two summarize all this route with a /26 mask. The
> problem
> > > is
> > > > that igrp does not have a summarization command, so the way to
> accomplish
> > > > summarization is to configure two static route and then redistribute
> that
> > > route
> > > > int igrp:
> > > >
> > > > ip route 172.17.59.0 255.255.255.192 null0
> > > > ip route 172.17.59.64 255.255.255.192 null0
> > > >
> > > > router igrp x
> > > > redistribute static metric ....
> > > >
> > > > Hope this help;
> > > >
> > > >
> > > > Nigel Taylor wrote:
> > > >
> > > > > Hey All,
> > > > > I'm also working on a OSPF - EIGRP - IGRP
redistribution
> > > lab. In
> > > > > my case the lab
> > > > > required you to only use 172.17.59.x for the EIGRP and OSPF
> domains.
> > > The
> > > > > requirement
> > > > > called for the IGRP domain that is connected to use 171.68.62.93
w/
> a 26
> > > bit
> > > > > mask.
> > > > > Let's try some ASCII art.....
> > > > >
> > > > > EIGRP(E1)------R3 -------(S1)---(FR, P-t-P, Area
> > > > > 0)---R2 ---------R1----(Area 1)
> > > > > / \
> > > > > / \
> > > > > IGRP OSPF(Area 2)
> > > > > (E0) (E2)
> > > > > / \
> > > > > R4 R5
> > > > > \
> > > > > (Area 3)
> > > > >
> > > > > Ok, I've got the EIGRP(E1) using 172.17.59.0/29. The OSPF domain
is
> > > > > using 172.17.59.48/28(S1) and (E2) using 172.17.59.68/30. As I
said
> the
> > > > > IGRP(E0)
> > > > > is assigned 171.68.62.93 w a /26 on R3's E0 interface. I've read
> > > through
> > > > > the list thread
> > > > > on this but I'm still unable to see a route to the OSPF from the
> IGRP
> > > > > domain.
> > > > > I'm so tired at this point can anyone shed some light on this for
> me...
> > > > >
> > > > > TIA
> > > > >
> > > > > Nigel...
> > > > >
> > > > > ----- Original Message -----
> > > > > From: David FAHED <dfahed@outremer.com>
> > > > > To: Mike McSpedon <mike@mentortech.com>
> > > > > Cc: fwells12 <fwells12@hotmail.com>; <ccielab@groupstudy.com>
> > > > > Sent: Sunday, January 21, 2001 1:05 PM
> > > > > Subject: Re: IGRP/OSPF redistribution question.
> > > > >
> > > > > > I forgot something:
> > > > > > If OSPF have a /20 network you can use15 /24 network to
advertise
> this
> > > > > network.
> > > > > >
> > > > > > Mike McSpedon wrote:
> > > > > >
> > > > > > > Regarding the first approach - I'd be careful to do that only
if
> the
> > > > > routes
> > > > > > > in the OSPF domain aren't summarizable into a /24 (e.g., OSPF
> has a
> > > /20
> > > > > > > that needs to be reachable from the IGRP domain). Regarding
the
> > > second
> > > > > > > approach, since Paige is an ASBR, you'll need to use the
> > > > > "summary-address"
> > > > > > > not the "area-range" command to summarize the /26 and /28 into
> /24s
> > > for
> > > > > IGRP.
> > > > > > >
> > > > > > > HTH,
> > > > > > > -Mike
> > > > > > >
> > > > > > > At 08:05 AM 1/21/01 -0400, David FAHED wrote:
> > > > > > > >There is two way to do that :
> > > > > > > >1) Create a loopback on Paige for example 10.0.0.1 - Use the
> > > default
> > > > > > > >network 10.0.0.0 to announce a default route into igrp
process
> > > > > > > >2) All the network with a mask differente to /24 use in the
> ospf
> > > domain
> > > > > > > >have to be announce with /24. You can use an area range with
> the
> > > two
> > > > > > > >route in gibson - for the route 172.20.113.192/26 area x
range
> > > > > > > >172.20.113.0 255.255.255.0 -for the route 172.20.114.48/28
area
> x
> > > range
> > > > > > > >172.20.113.0 255.255.255.0 - After doing that you will have
> only
> > > /24
> > > > > > > >network on paige and you can redistribute into IGRP without
> problem
> > > > > > > >
> > > > > > > >Hope this help!
> > > > > > > >
> > > > > > > >
> > > > > > > >fwells12 wrote:
> > > > > > > >
> > > > > > > > > In Jeff Doyle's example of OSPF/IGRP redistribution on
page
> 710,
> > > is
> > > > > =
> > > > > > > > > there any way of letting the IGRP domain be able to ping
the
> > > VLSM =
> > > > > > > > > networks?
> > > > > > > > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:27:38 GMT-3