At 12:44 PM 8/27/98 -0700, you wrote:
>
>nmanisca@vt.edu (nm) writes:
>> At 01:18 PM 8/26/98 -0400, you wrote:
>> >
>> >>>>>> "nm" == nm  <nmanisca@vt.edu> writes:
>> >    nm> o one can never have two seperate networks that each use some
>> >    nm> random part of a class c?
>> >  
>> >  They can use disjoint subnets, but not random "networks" --- if this
>> >doesn't make sense to you, then you need to learn a lot more about IP.
>> 
>> well would you or anyone else like to explain what a disjoint subnet is?
>
>I think what he means is that you can't cut a hole in your network and
>route a sub-peice of it somewhere else.  This statement is both right
>and wrong. ;-)
>
>The current routing method is called CIDR (classless internet domain
>routing).  CIDR basically says that the router should choose the most
>specific netmask (smallest network) for all the routing entries that
>apply.  Basically you are allowed to cut holes in your network on any
>aligned address (eg. an N-address hole has to be aligned to a multiple
>of N) and route that hole to a completely different place.  Using a
>32-bit IP-v4 address it perfectly acceptable to have 33 "concentric"
>networks.
>
>	0.0.0.0/0           -> interface N, gateway #M
>	...
>	10.1.1.1/32	    -> interface N+32, gateway #M+32

Thank you for the little tutorial :)

>Unfortunately IP over ethernet was formalized long before CIDR came
>into vogue.  The ethernet paradyme simply assumes a single flat
>fixed-size net.  You just can't punch holes in it and expect everyone
>on that ethernet to understand the joke.
>
>If you need 3 ethernets and have a single class-C sized net to play
>with you can, for example, break it up into non-overlapping networks
>of sizes 128, 64, 64.

Well as I said eariler I have done this before with a linux based system, but
I was breaking the rules because two of my interfaces had the same ip
and they say on different networks...

Thats part of the problem, I only have 3 or 4 ip addresses

>-wolfgang
>-- 
>Wolfgang Rupprecht  		<wolfgang+gnus@spam.free.or.die.wsrcc.com>  
>http://www.wsrcc.com/wolfgang/

Thanks,
Nick