Re: MAC/IP trace

If you want to find the IP from the MAC then go to the device that has the
layer 3 gateway and run "show ip arp | inc XXXXXXXX" where XXXXXXX is the
mac address.
If you want to find MAC from IP, do the same as above but include the IP
address instead of MAC for XXXXXXXX

If you want to find the port with the MAC address start at your root switch
for the vlan and run "show mac ad ad XXXXXXXXXX" and see which interface it
says. If that interface goes to another switch, then go to that switch and
run the command again.

On Fri, Aug 1, 2014 at 1:28 PM, Cisco Fanatic <ebay_products_at_hotmail.com>
wrote:

> I am not sure as how to go about doing this.
>
> I have 5 switches in the network with 200+ workstations.
> These workstations are in VLAN 4 which is VLAN on all the switches
> (transparent mode).
>
> I have the MAC address of the workstation. How can I find the IP or name of
> the computer.
>
> The problem is that the switches are in 10.x.y.0/16 range. So, even if I
> know
> the ip 10.x.4.z I don't know which switch/switch port it is connected to.
> Any
> way to tackle this?
>
> Yuri
>
>
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>
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-- 
Marc Abel
CCIE #35470
(Routing and Switching)
Blogs and organic groups at http://www.ccie.net