For the ip gurus How to get ip address if you only have the mac address
 

Here's the scenario.....

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Is there a utility we can run (windows or DOS i'm afraid) that will
return an ip address and or hostname given a mac address?

We've tried looking in DHCP, but there is no record (which is what
leads us to suspect it's got a fixed ip).

We've tried looking in DNS, but can't find it there either).

Have had a look in Google, but whilst there's plenty of people asking
the question, no one seems to have come up with an answer :=((

Any ideas?

For the ip gurus How to get ip address if you only have the mac address
 

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Try arp -a if you're lucky.

Christian.

For the ip gurus How to get ip address if you only have the mac address
 

wrote:
Here's the scenario.....

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Is there a utility we can run (windows or DOS i'm afraid) that will
return an ip address and or hostname given a mac address?

snip

Any ideas?

Try openning a command prompt and use 'ARP -a'

You should probably try printing to the print server in question
first..

M.
(Not an IP Expert !)

For the ip gurus How to get ip address if you only have the mac address
 

Christian McArdle wrote:
We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Try arp -a if you're lucky.

Christian.

Should have said, tried arp -a

It returned some interesting looking stuff on my machine on the live
network, so I tried it on the mini network (1 hub, 1PC, 1 Print
Server).

It returned nothing. But then there is no dns server etc, etc running
on the PC at present.

My collegue was going to try running it on one of the servers (Server
2003) to see if that would yeild the info.

With regard to the suggestion from another poster to try and print to
it, that would require us to know it's ip address or hostname :=((

For the record you can't reset it to factory defaults without
connecting to it either :-((

For the ip gurus How to get ip address if you only have the mac address
 

For the record you can't reset it to factory defaults without
connecting to it either :-((

There's usually a reset button on it that sets it to 192.168.0.1. Put it on
your mini network. Set your computer to 192.168.0.100. Then attempt to
telnet or web 192.168.0.1.

Christian.

For the ip gurus How to get ip address if you only have the mac address
 

Christian McArdle wrote:
For the record you can't reset it to factory defaults without
connecting to it either :-((

There's usually a reset button on it that sets it to 192.168.0.1. Put it on
your mini network. Set your computer to 192.168.0.100. Then attempt to
telnet or web 192.168.0.1.


No, that's what I meant when I said you have to connect to it. I've
even had one apart before to look for jumpers to short orwhatever, but
to no avail.

I did have a brilliant idea however.

Run the D-Link supplied CD (amazingly it still read after spending 5
years on my desk as a coffee cup holder :=(( ) But that won't find it
either! BAH!

This has long since gone into the realms of having cost too much in man
(sorry Mary) person hours, but it's gotten me mad now!

latest is my cow-orker is going to try the same procedure but with a
bog standard ancient 98 machine in case it's some firewall software or
something that's getting in the way.

For the ip gurus How to get ip address if you only have the macaddress
 

For the ip gurus How to get ip address if you only have the mac address
 

If you can't reset the print server to factory default then you could
have a long job here if you haven't used the print servers recently.

Bit of background; the way two peices of kit on an IP network
communicate at low level is using the MAC address, when you access
something using it's IP address PC's, switches and routers have to get
the MAC address for that device by what is termed ARPing for it. The
PC and routers then store this information for each device they have
communicated with recently in what is known as an ARP table. Typing
ARP -a displays the contents of this table.

So what you have to do is to get the entries for these devices into the
ARP table and the only way I can see of doing this is to ping every
device on the sub net and then go looking in the ARP table for the MAC
addresses you already know.

There is a ping sweep application that does one better and provides the
IP versus MAC for you available free at

http://www.insecure.org/nmap/nmap_download.html

Which will make pinging a large network easier, I just tried it and it
works.

When you have loaded it (and the WinPcap library it tells you about)
you just type:

nmap.exe -sP 172.101.100.* return

but replace the 172.101.100.* with your network address range and you
will be rewarded with a screen full of IP / MAC addresses.

Load the output into a text editor and search for the MAC address you
want.

For the ip gurus How to get ip address if you only have the mac address
 

wrote:

Lots of good stuff which i'm sure will come in handy. In the meantime,
i've cracked it!

First thing was 4 little letters.... rtfm

Where I found the long forgotten 3 little letters ipx

Thr D-Link admin software uses this to talk to the print server. It
still didn't want to work on the XP machine (though we can probably
troubleshoot this later for future use). But enabling ipx on the 98
box made it find the print server.

Turned out it had an ip address so alien to our present network setup
it's no wonder it didn't show up anywheres.

Memo to self - before storing things like this away, give them a
factory reset!

Thanks to all for your replies.

For the ip gurus How to get ip address if you only have the mac address
 

In article .com,
says...

Christian McArdle wrote:
For the record you can't reset it to factory defaults without
connecting to it either :-((

There's usually a reset button on it that sets it to 192.168.0.1. Put it on
your mini network. Set your computer to 192.168.0.100. Then attempt to
telnet or web 192.168.0.1.


No, that's what I meant when I said you have to connect to it. I've
even had one apart before to look for jumpers to short orwhatever, but
to no avail.

I did have a brilliant idea however.

Run the D-Link supplied CD (amazingly it still read after spending 5
years on my desk as a coffee cup holder :=(( ) But that won't find it
either! BAH!

This has long since gone into the realms of having cost too much in man
(sorry Mary) person hours, but it's gotten me mad now!

latest is my cow-orker is going to try the same procedure but with a
bog standard ancient 98 machine in case it's some firewall software or
something that's getting in the way.


You could try brute force using a port scanner like
http://ipscan.sourceforge.net/ipscan.exe

Set the PC IP address to 192.168.0.1, netmask 255.255.0.0, and scan the
range 192.168.0.2 to 192.168.255.254. It will take a while, but if the
server is responding to pings you will get a reply eventually. If the
server is using a 10.0.0.0 address it might take considerably longer ...

For the ip gurus How to get ip address if you only have the mac address
 

wrote in message
oups.com...

wrote:

Lots of good stuff which i'm sure will come in handy. In the meantime,
i've cracked it!

First thing was 4 little letters.... rtfm

Where I found the long forgotten 3 little letters ipx

Thr D-Link admin software uses this to talk to the print server. It
still didn't want to work on the XP machine (though we can probably
troubleshoot this later for future use). But enabling ipx on the 98
box made it find the print server.

Turned out it had an ip address so alien to our present network setup
it's no wonder it didn't show up anywheres.

Memo to self - before storing things like this away, give them a
factory reset!

Thanks to all for your replies.

http://www.youngzsoft.net/cc-get-mac-address.htm would have solved your
problem in ten seconds flat.

For the ip gurus How to get ip address if you only have the mac address
 

wrote in message
oups.com...
Here's the scenario.....

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Is there a utility we can run (windows or DOS i'm afraid) that will
return an ip address and or hostname given a mac address?

We've tried looking in DHCP, but there is no record (which is what
leads us to suspect it's got a fixed ip).

We've tried looking in DNS, but can't find it there either).

Have had a look in Google, but whilst there's plenty of people asking
the question, no one seems to have come up with an answer :=((

Any ideas?



I know the problem is solved but I use a couple of tools from www.radmin.com

IPscan and lan scanner usually do the trick, it will scan an address range
on a network and
report back what addresses are in use, very handy

Paul

For the ip gurus How to get ip address if you only have the mac address
 

wrote:

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Again, I see this is solved now, but another trick is to set up a
static ARP pair on the XP machine:

arp -s a-free-ip-on-your-network device-MAC

and then telnet to the given ip address. You can often get to the
management agent of the device using this method, and then see what
IP address it thinks it has.
--
Selah

For the ip gurus How to get ip address if you only have the mac address
 

On Wed, 23 Nov 2005 12:18:34 UTC, wrote:

Here's the scenario.....

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Is there a utility we can run (windows or DOS i'm afraid) that will
return an ip address and or hostname given a mac address?

We've tried looking in DHCP, but there is no record (which is what
leads us to suspect it's got a fixed ip).

We've tried looking in DNS, but can't find it there either).

I'm assuming that these have been offline for a while, so the addresses
won't appear in any ARP cache.

I also assume that the addresses are going to be (probably) in the
192.168.x.x range.

Write a script that pings every address in that range. At one go per
second (run two or three scripts on subranges) you'll get through the
lot in a day.

Have another script doing arp -a every five minutes, appending the
results to a file.

Scan that file for the MAC address....

Alternatively, ask D-link how to restore factory settings!

--
The information contained in this post is copyright the
poster, and specifically may not be published in, or used by
Avenue Supplies, http://avenuesupplies.co.uk

For the ip gurus How to get ip address if you only have the mac address
 

On 23 Nov 2005 04:18:34 -0800, wrote:

Here's the scenario.....

We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Is there a utility we can run (windows or DOS i'm afraid) that will
return an ip address and or hostname given a mac address?

We've tried looking in DHCP, but there is no record (which is what
leads us to suspect it's got a fixed ip).

We've tried looking in DNS, but can't find it there either).

Have had a look in Google, but whilst there's plenty of people asking
the question, no one seems to have come up with an answer :=((

Any ideas?

Ping the subnet broadcast address, then do arp -a

Say your IP is 192.168.0.1, and your subnet mask is 255.255.255.0,
ping 192.168.0.255 (the last address in the subnet), this will
normally get all hosts to respond. personal firewalls, and broken
implementations of ping will upset the "normally" bit of this
statement.

VLSM makes working out the broadcast harder, post your (slightly
altered) actual addresses if you can't do it.

"Cain & Abel" will do this stuff for you, and a whole bucnh of other
nasty stuff if thats what you are into.

Rick

For the ip gurus How to get ip address if you only have the macaddress
 

wrote:

Have had a look in Google, but whilst there's plenty of people asking
the question, no one seems to have come up with an answer :=((

I see its sorted now, but another option that often works is to hook it
up to a network and run a SNMP client. That will often get you
information you can't readily get at the IP level.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

For the ip gurus How to get ip address if you only have the mac address
 

In message .com,
writes

Christian McArdle wrote:
We have a couple of D-Link print servers. We can determine the mac
address from the label on the underside, but we think thet we must have
given them fixed ip addresses (back in the mists of time).

Try arp -a if you're lucky.

Christian.

Should have said, tried arp -a

It returned some interesting looking stuff on my machine on the live
network, so I tried it on the mini network (1 hub, 1PC, 1 Print
Server).

It returned nothing. But then there is no dns server etc, etc running
on the PC at present.

My collegue was going to try running it on one of the servers (Server
2003) to see if that would yeild the info.

With regard to the suggestion from another poster to try and print to
it, that would require us to know it's ip address or hostname :=((

For the record you can't reset it to factory defaults without
connecting to it either :-((

Over an RS232 port ...

I have the program somewhere I think

I changed to a Netgear router at work today - streets ahead of D-Link

--
geoff

For the ip gurus How to get ip address if you only have the mac address
 

In message , Christian
McArdle writes
For the record you can't reset it to factory defaults without
connecting to it either :-((

There's usually a reset button on it that sets it to 192.168.0.1. Put it on
your mini network. Set your computer to 192.168.0.100. Then attempt to
telnet or web 192.168.0.1.

You would have thought so, wouldn't you. I know the OP's (or should I
be cruel and say No P ?) referring to a print server and me a router,
but ...

Nah mate

You can only reset it over a serial link

--
geoff

For the ip gurus How to get ip address if you only have the macaddress
 

In article ,
John Rumm wrote:
wrote:

Have had a look in Google, but whilst there's plenty of people asking
the question, no one seems to have come up with an answer :=((

I see its sorted now, but another option that often works is to hook it
up to a network and run a SNMP client. That will often get you
information you can't readily get at the IP level.

But you need an IP address to poke SNMP commands to it...

One way which wouldn't have worked for the OP is a Unix utility called
arping. It pings via MAC address. That combined with tcpdump to see whats
going over the wires (and comimg back!) has worked for me in the past.

Gordon

For the ip gurus How to get ip address if you only have the mac address
 

Thanks once again guys for lots of good advice.

I am sure this thread will come in very handy for those who "come
googleing after"

As usual this group has provided lots of great advice. Much better
than that given on what might initially seem more appropriate groups.

Thanks again.