On 08/31/10 06:34, Giacomo Bernardi wrote:
want to solve a very awkward scenario?
There's a linux box with three interfaces (eth0, eth1, eth2) each
directly connected to an embedded device that has configuration:
- IP: 10.0.0.1
- Mask: 255.255.255.0
(in other words: all three devices answer to 10.0.0.1/24 and their
configuration can't be changed)
I need to send and receive snmp packets to an arbitrary given device
among these three ...how?
I don't know if it would work for you or not, but you could try an old /
odd / if not dirty trick.
Try adding static ARP entries to each device's MAC address using
different (bogus) IPs. Then try communicating with the bogus IPs. You
might get lucky and be able to communicate. It really depends on what
is included in the higher layer protocol. (I've not dealt with enough
SNMP to know if this is possible.)
The main thing that the differing IPs are use for is to translate the
layer 3 IP address to the layer 2 MAC address. So, if you can side step
that problem, you may be golden.
Yes, this is a dirty trick / hack, but sometimes that's what you have
got to do.
Grant. . . .
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