From: zhencai (zhencai@xxxxxxxx)
Date: Sun Jan 30 2000 - 19:56:22 GMT-3
Hi,
I tried both Mike's suggestion "redistribute connected" and Bob's suggestion
"network 137.20.20.0 0.0.0.255 area 0". Both work. I'm using IOS 11.2(12)
enterprise. I'll try 11.3 and 12 later. The problem is: I never heard of
this problem before, it's not in Doyle's book, it's not in Caslow's book and
it's not in Slattery's book. Where did you guys get the information from? I
couldn't find on CCO talking about this weird EIGRP thing...
Thanks a lot.
Zhen Cai
-----Original Message-----
From: Mike McSpedon [mailto:Mike@ccci.com]
Sent: Sunday, January 30, 2000 7:36 PM
To: Kang, Bob (CAP, ITS, CA); 'zhencai'; ccielab@groupstudy.com
Subject: RE: redistribution help
Bob,
I respectfully differ. Redistributing /32 (hosts) routes into EIGRP is
no problem on late 11.3 and 12.0 IOS (if there are any doubts, create a
host route on R1 on a loopback interface and redistribute it via
'redistribute connected'. Then check the routing tables on R2 and
R3--they'll see the host route as a /32 subnet off the major network).
Also, including the R1's E0 interface in OSPF with 0.0.0.0, as I understand
it, has nothing to do with it. The 0.0.0.0 just narrows the inclusion down
to an exact match. The lack of a neighbor makes the 137.20.20.0 network a
stub network, not the 0.0.0.0.
Again, with respect to the redistribution problem, the 137.20.20.0 /24 is a
connected network on R1, not one dynamically learned via OSPF (no neighbors
= no adjacencies = no spf calculation = no dynamic OSPF routing information
at all). Therefore, the solution is to redistribute 137.20.20.0 /24 into
EIGRP via 'redistribute connected.'
If anyone sees a flaw in my thinking, please correct me.
Thanks!
-Mike
At 03:16 PM 1/30/00 -0500, Kang, Bob (CAP, ITS, CA) wrote:
>Hi there,
>
>
>Eigrp has no idea of /32 network, it will not distribute any address with
>/32 mask.
>Your config shows the 137 network is incorporated into ospf with /32. That
>is the reason!
>Use any other mask (except /0, that is also not recognized by eigrp), you
>will find the pretty route you loved to see!
>
>Bob
>
>-----Original Message-----
>From: zhencai [mailto:zhencai@home.com]
>Sent: January 29, 2000 8:56 PM
>To: ccielab@groupstudy.com
>Subject: redistribution help
>Importance: High
>
>
>Hi,
>
>I thought I knew redistribution and this is a fairly simply senario, but I
>couldn't make this work, any help will be greatly appreciated!!!
>
>------R1=======R2=======R3
> e0 s0 s0 s1 s0
>|-ospf-|-------eigrp-----|
>
>R1:
>interface e0
> ip addr 137.20.20.1 255.255.255.0
>interface s0
> ip addr 192.168.21.1 255.255.255.0
>router ospf 10
> redistribute eigrp 200 metric 64 subnet
> network 137.20.20.1 0.0.0.0 area 0
>router eigrp 200
> redistribute ospf 10 metric 10000 100 255 1 1500
> network 192.168.21.0
> no auto-summary
>
>R2:
>interface s0
> ip addr 192.168.21.2 255.255.255.0
>interface s1
> ip addr 192.168.17.1 255.255.255.0
>router eigrp 200
> network 192.168.17.0
> network 192.168.21.0
>
>R3:
>interface s0
> ip addr 192.168.17.2 255.255.255.0
>router eigrp 200
> network 192.168.17.0
>
>Clock rate is properly configured. From R3, I can't see R1's e0 subnet
>unless I chance R1's e0 to /16 subnet. But EIGRP is VLSM, 137.20.20.0/24
>should be able to get advertised into EIGRP. right? What did I do wrong?
>Thanks a lot.
>
>Zhen Cai
>
>p.s. IOS is 11.2(12) enterprise
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:22:46 GMT-3