Get ip address from mac address

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Operating Systems Solaris Get ip address from mac address
# 1  
Old 11-04-2009
Get ip address from mac address

I have following message in my messages file on solaris 10

WARNING: e1000g3712000:3 has duplicate address (in use by 00:50:56:85:25:ef); disabled

Now is there any way i can find which server has 00:50:56:85:25:ef mac address either IP or Hostname ?
# 2  
Old 11-04-2009

If you have root privileges, you can use "ifconfig -a", which will display the MAC address along with the IPs. Also, "banner" command at OK prompt will display the MAC addrs. If you do not have root privs - you can NOT see the MAC addr !!

In your case, disable the NIC in your system. From another system, do a "traceroute". That will lead you to the another system that is using the IP.

Hope I answered your question.
# 3  
Old 11-04-2009
you already have the IP adress of the server Smilie the closes thing i can think of to localize the particular server is to check from your switch which port it is connected to by using the mac address. been into this kind of situation and have asked our network guys for help Smilie
# 4  
Old 11-04-2009
Something that may help is to realize that the first three numbers in a MAC address indicate the manufacturer. In this case, whatever has that address belongs to VMware, so it's probably a VM somewhere.
# 5  
Old 11-05-2009
yep u r correct Tony the system was a VMware VM, but how do u know that 00:50:56 belongs to VMware .. ?
# 6  
Old 11-05-2009
There's a complete list of assigned vendor codes available at the IEEE, as well as various lookup tools on the web.
# 7  
Old 11-05-2009
Originally Posted by fugitive
Now is there any way i can find which server has 00:50:56:85:25:ef mac address either IP or Hostname ?
Yes, the easiest way is to run arp -a on the subnet where the conflict occurs and then look at the arp cache.

It is really difficult in most networks to map vendor IDs from MAC addresses to actual hosts, so the first step is to look at the arp cache and find out which IP address is mapped to which MAC address.
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