Find IP

[wrwiii122]

Anyone know how to find an IP of a device that is connected to a port?

[steve.busby]

Is the device connected to a switch port--on a Cisco Switch? Depending on if it's CatOS or CatIOS, you'll need to get the MAC address of the device connected. With that you can get into your router and look at the ARP table to determine the IP address of the MAC address you found.

If the device connected to a port is another cisco device you *may* be able to use CDP to determine the IP address.

There are also open source tools available here that can help (ARPTrack and/or Tracker):

http://cosi-nms.sourceforge.net/alpha-progs.html

HTH

Steve

[paddyxdoyle]

Everything Steve says is correct.

Just to add a bit to this, you will need to look on the device that provides the gateway for the host in question so this could be a router or a layer 3 switch.

Once you have found this device then you can enter similar to:

sh arp | i

e.g.

my_router#sh arp | i 0012.7981.47e5

Internet 10.48.128.47 30 0012.7981.47e5 ARPA Ethernet1/0/4

HTH

PJD