From: Mannan Venkatesan (venkat_m@xxxxxxx)
Date: Mon Jun 04 2001 - 23:58:53 GMT-3
I got it working with 'summary-address 172.16.24.0 255.255.255.0 ' on R3 and
a policy route to forward any 172.16.24.0 packets to the r5-r3 PTP link.
HTHs,
Mannan
----- Original Message -----
From: "Roman Rodichev" <rodic000@hotmail.com>
To: <luke.mendoza@home.com>; <ccielab@groupstudy.com>
Sent: Saturday, June 02, 2001 9:17 PM
Subject: RE: EIGRP >>> OSPF >>> RIP
> How did you manage to create those? On which router? Definetely not on R5
or
> R3. And if you do it on R1, traffic coming from R4 towards those subnets
> will stop at R1. You probably want to use static routes
>
> :)
>
>
> >From: "Luke" <luke.mendoza@home.com>
> >Reply-To: <luke.mendoza@home.com>
> >To: "'Roman Rodichev'" <rodic000@hotmail.com>, <ccielab@groupstudy.com>
> >Subject: RE: EIGRP >>> OSPF >>> RIP
> >Date: Sat, 2 Jun 2001 18:10:52 -0700
> >
> >Roman,
> >
> >You are right.. I tried all the things that you said and it wouldn't
> >work...
> >so what I did was create loopbacks of 24,25,26,27 and redistributed to
> >OSPF... that seems to work out....
> >
> >
> >Luke
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >Roman Rodichev
> >Sent: Saturday, June 02, 2001 6:02 PM
> >To: luke.mendoza@home.com; ccielab@groupstudy.com
> >Subject: Re: EIGRP >>> OSPF >>> RIP
> >
> >
> >This is a great scenario! Luke, thanks a lot for this one!
> >
> >You can't achieve you goal using EIGRP and/or OSPF summarization. You are
> >trying to go from /22 to /24. If you try creating "ip summary-address
> >eigrp"
> >on R5, R3 will lose connectivity to R5's IP address. Actually, if you
think
> >about it, you won't be able to ping even the local interface! :) Hah! R3
> >should have two routes:
> >
> >C 172.16.24.0/22 directly connected
> >D 172.16.24.0/24 via 172.16.24.5
> >
> >If you try to ping local interface (172.16.24.3), you should not be able
> >to.
> >I'm pretty sure about it. It will loop through the routing table. It will
> >try to find 172.16.24.3 and will match a more specific EIGRP route
pointing
> >172.16.24.5. So it will try to find 172.16.24.5 and will match the same
> >route again and then fail, resulting in unsuccessful pings. Heh heh.
That's
> >why you never want to put summary-address statements on EIGRP interfaces
> >specifing a more specific subnet than then the network of the interface!
> >
> >Ok, you could also create OSPF summary-address on R3. But you will have
the
> >same problem. OSPF will create a route to NULL0, that will block all of
the
> >traffic destined for 172.16.24.0/22.
> >
> >The only way out is creating 4 static routes on R3 and redistributing
them
> >into OSPF.
> >
> >ip route 172.16.24.0 255.255.255.0 eth0
> >ip route 172.16.25.0 255.255.255.0 eth0
> >ip route 172.16.26.0 255.255.255.0 eth0
> >ip route 172.16.27.0 255.255.255.0 eth0
> >
> >Roman
> >
> > >From: "Luke Mendoza" <luke.mendoza@home.com>
> > >Reply-To: "Luke Mendoza" <luke.mendoza@home.com>
> > >To: "Ccie \(E-mail\)" <ccielab@groupstudy.com>
> > >Subject: EIGRP >>> OSPF >>> RIP
> > >Date: Sat, 2 Jun 2001 15:40:41 -0700
> > >
> > >Okay here is the quick run down of the topology:
> > >
> > >
> > >
> > >R5 >>>>> R3 >>>>>> R1 >>>>>> R4
> > >
> > >R5 and R3 are running EIGRP
> > >R3 and R1 are running OSPF
> > >R1 and R4 are running RIP
> > >
> > >Between R5 and R3 the network is 172.16.24.5 and 172.16.24.3 with a
mask
> >of
> > >255.255.252.0
> > >
> > >Between R3 and R1 I have 172.16.123.3 and 172.16.123.1 with a mask of
> > >255.255.255.0
> > >
> > >Between R1 and R4 I have 172.16.14.1 and 172.16.14.4 with a mask of
> > >255.255.255.0
> > >
> > >
> > >Ok.. so I redistribute EIGRP to OSPF and vice versa
> > >then I redistributed OSPF to RIP and vice versa..
> > >
> > >
> > >Network 172.16.24.0 doesn't show up on R4 because of the mask /22
> > >
> > >How and where should I summarize 172.16.24.0 /22? I can't do a summary
> >of
> > >172.16.0.0 because I have other networks floating around in the
classful
> > >172.16.0.0 network. How can I unsummarize 172.16.24.0 /22 to
172.16.24.0
> > >/24????
> > >**Please read:http://www.groupstudy.com/list/posting.html
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