Start at your core and work your way out. For example, if you have a core switch connected to other switches at the distribution or accesss layers via trunks, do a show mac-address-table (or show cam dynamic for CatOS switches) and see which trunk port it is coming from. Then go to the next switch and do the same thing. Eventually you will get to the switch to which it is directly connected and get the actual port. Of course, if you are using VLANs or otherwise subnetting your network, you can narrow down your search quite a bit by only searching switches that carry that VLAN.
""David Ristau"" wrote in message news:[EMAIL PROTECTED] > given an IP address and a MAC address, how can I use my cisco switch to > identify which port an unknown device is attached to ? > > can I view the switching table cache entries ? > > I've got an IP device on the network and nobody seems to know where it is. > heh! > > given a catalyst 3500XL running ios v 12.0 > > thanks Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65679&t=65670 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
