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Posted by Gerald Vogt on March 18, 2005, 1:07 pm
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bandas@rediffmail.com wrote:
> How can I locate these devices of machines within my network. Is there
> any tool? or any manual method to get the info??
No there is no such tool. It mostly depends on what kind of switches,
routers, etc. you have and how much they can tell you. I primitive dumb
cheap switch won't tell you anything about what's connected and where. A
managed switch on the other hand reveals a lot about what's connected.
I would start with your traceroute output to identify the last router on
the way there. They must be somewhere connected there, either directly
to the router or somewhere from there, maybe with a switch/hub or similar.
Next check "arp" to find out the MAC address. You can find out the
manufacturer of the ethernet card in the internet when you know the MAC
address which may help occasionally. Check whether the same MAC address
is used for another IP address as well. Maybe someone is using a virual
adapter.
Beyond that, I suppose it is pretty much "plug & play" or better unplug
& ping. Go to the last router, unplug one cable, ping, if it is still
working, plug it in again and go to the next. Until you find the cable.
Then follow the cable to whereever it leads you and to the same with any
switch/hub in between.
Again, unless you have the more expensive stuff, which has a proper
management interface and tells you about what is connected on which port...
Gerald
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