From: Hansang Bae (hbae@xxxxxxxxxx)
Date: Sun Oct 07 2001 - 18:31:58 GMT-3
At 04:32 PM 10/7/01 -0400, Henry wrote:
>Just did a configuration exercise number 1 on page 739. Redistribution
>between RIP and IGRP.
>The solution provided implies to change a subnet mask on router B
>interface E1. Now,
>This will allow some redistribution to take place, but it will not
>reflect the actual subnets
>As IGRP redistributed subnets will show up on router C as /27 and RIP
>redistributed subnets
>Will show up on router A as /28 and neither is really correct. So, in
>light of that, even though
>Yes you'll see subnets redistributed on routers A and C they will not
>work correctly in real life.
>The question here, is it something really allowed ?
Remember that you don't necessarily need the correct mask as long as you
don't have overlapping address spaces. As long as you get the packet to
the router, the longest match will take affect. Some things to keep in
mind when working with RIP v1 and IGRP. RIP understands 0/0 network, but
IGRP does not.
You can use IGRP with "ip default-network" but the network referenced in
that statement must exist in your routing table. Also, use "ip
default-network" with a non-classful addres, (like 192.168.1.128, or
10.10.0.0, or 172.16.1.0), the IOS will auto-magically create a static
route. So if your lab says "no static route" well.... you just lost some
points.
hsb
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