MAC address

[Chern Jian Leaw]

Hi
Is there a way which I can find the MAC address of a particular HP workstation, given only the IP address?

If so, could someone provide the command on how to find the MAC address?

Thanks

[Tom Geudens]

Hi,
You cannot do this remote, but on the workstation itself you can do (example) :
root/sv00138#lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#
0/0/0/0 0x001083FC02BC 0 UP lan0 snap0 1 ETHER Yes 119

Hope this helps,
Tom

[Ruediger Noack]

A simple way:
ping the workstation an then look in the arp cache: arp -a

Ruediger

[Trond Haugen]

As there is no connection between MAC- and IP-adress, strictly no. But a posible solution is:
telnet IP
logind: root
lanscan

Not sure if this is what you wanted.

regards,
Trond

[Tom Geudens]

Oh ... I so ashamed ... arp -a does indeed do the trick remotely.
I'm going very red in the face now :-)

Regards,
Tom

P.S. N/A for this one please

[steven Burgess_2]

Hi

arp -a | grep

Steve

[manoj_pu]

Hi

You can get macaddress by "ping" and "arp -a" if the IP is in LAN.

If it is connected through router then yo will have to do telnet and do lanscan

Manoj

[T G Manikandan]

#arp -a |grep should give it.
If the result is blank

Then just do a ping to the remote ip-address(ip for which you require mac-address)
#ping
#arp -a|grep

Thanks

[Chern Jian Leaw]

HI Tom,
From your generated output below:

root/sv00138#lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#
0/0/0/0 0x001083FC02BC 0 UP lan0 snap0 1 ETHER Yes 119

Which is the MAC address? Is it the HP-DLPI, or 0x001083FC02BC ?

Thanks.

[Chern Jian Leaw]

TG,

I'm afraid arp -a |grep still produces a blank result, after doing a ping or even logging into that ip_address.

Please advice.

[T G Manikandan · Accepted solution]

#lanscan |awk '{print $2}'|grep -v Station|grep -v Address

is the MAC-address!

[Mahima Kaushik_2]

The Mac address can be found written in a file under /etc/rc.config.d directory. The file can be hpfddiconf or hpetherconf depending upon your network configuration. The variable should be listed something like this.

STATION_ADDRESS=0x08******

Mahima

[Pete Randall]

In answer to your question,
0x001083FC02BC is the MAC address in Tom's output.

HTH
Pete

[Ruediger Noack]

Hi,

the reading of arp cache works from a remote box. You don't need to login to the box you want to recognize the MAC address. The MAC adresses of local NIC are *NOT* in the arp cache.

Ruediger

[Chern Jian Leaw]

mahima,
When I opened the file hpetherconf, there isn't a value assigned to the HP_ETHER_STATION_ADDRESS[0] variable.

Could you please explain how is it possible for the lanscan to still produce the MAC address without it being defined the hpetherconf file?

Thanks

[Pete Randall]

From what I can gather from the man page, lanscan reads from the running kernel, not from any configuration file. That would explain how it can find the MAC address, I think.

Pete

[John Palmer]

Hi,

HP_ETHER_STATION_ADDRESS allows you to set a particular MAC address if you want to. This was used historically on systems where application software licensing depended on a MAC address.

If you don't set it (which is the default) then the unique hardware address of the card is used.

Regards,
John

[Tom Geudens]

Hi,
The MAC address in the output is
0x001083FC02BC

Regards,
Tom

[Rich Wright]

It looks to me like the "arp -a" method does not work if going through a router.