[Netkit.users] Link A - B - C

Ronald J. Srodawa srodawa a oakland.edu
Ven 25 Mar 2005 15:56:44 CET


Every network adapter must have a unique IP address.  The destination IP 
address is used to map to a physical adapter.  Thus, eth0 and eth1 on the 
machine you call 10.0.0.2 must have different IP addresses.  These two IP 
addresses should be on different subnets to hav eeverything realistic.

Just look at the output of ifconfig -a on a real system that is connected 
to two networks get insight into this.  Note that the netmask is used on 
each subnet to define the set of IP addresses inside that network.

Ron Srodawa

On Fri, 25 Mar 2005, Alpt wrote:

> Hi there,
> I need to reconstruct with netkit the following topology:
>
>     10.0.0.1	    10.0.0.2	     10.0.0.3
>       A(eth0) -- (eth0)B(eth1) -- (eth0)C
>
> B must have only one ip.
> The purpose of this is having an ad-hoc network were
> A is directly linked with B and B with C, but A doesn't see C.
>
> I'm trying with:
> $ vstart pc1 --eth0=A $X
> $ vstart pc2 --eth0=A --eth1=B $X
> $ vstart pc3 --eth0=B $X
>
> pc3# ifconfig eth0 10.0.0.3
> pc1# ifconfig eth0 10.0.0.1
> pc2# /sbin/brctl addbr br0
>     /sbin/brctl addif br0 eth1
>     /sbin/brctl addif br0 eth0
>     /sbin/ifconfig eth0 0.0.0.0 promisc up
>     /sbin/ifconfig eth1 0.0.0.0 promisc up
>     ifconfig eth0 hw ether 00:00:00:00:00:06
>     ifconfig eth1 hw ether 00:00:00:00:00:07
>     /sbin/ifconfig br0 10.0.0.2 up
>
> But this doesn't work at all.
>
> Any hints?
>
> Best Regards
> -- 
> :wq!
> "I don't know nothing" The One Who reached the Thinking Matter   '.'
>
> [ Alpt --- Freaknet Medialab ]
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| Ronald J. Srodawa               | Internet: srodawa a oakland.edu |
| School of Engineering and CS    | Voice:    (248) 370-2247      |
| Oakland University              | FAX:      (248) 370-4625      |
| Rochester, Michigan  48309-4478 |                               |



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