I appreciate the help on this question. I think I need to further define my question. How do you find out which switch a MAC address resides in a large network environment. I am working with several large colleges/universities who need to find a student's location in the network. They know the MAC address or IP, but not the student who owns its. They all have over 2000+ students and many switches/hubs where these students reside. The typically have only 1-3 VLANS for students, so its tough to narrow down the location. Some of them used to run Cabletron equipment and their proprietary VLAN software called SecureFast. SecureFast maintained a searchable directory with MAC, network address (IP, IPX, A-talk, Netbios etc.), switch, port, DNS name etc. It was very easy to find a MAC address within seconds. Now we are moving to 802.1Q and Cisco switches and are having severe withdraw. There must be an easy way to insert a MAC or IP address and find it in the CAM table without a lot of manual effort.
Thanks again, I appreciate the help!! Jeffrey Reed Classic Networking, Inc. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Larry Letterman Sent: Saturday, March 16, 2002 6:35 PM To: [EMAIL PROTECTED] Subject: RE: Finding a MAC address [7:38560] On the router you can do a 'sh mac-addr-table addr xxxx-xxxx-xxxx(mac addr) and it will show you the interface that the Mac-addr is on. On switches you can do a 'show cam xx-xx-xx-xx-xx-xx and it should give you the port on the switch where the mac-addr is.. This works on our 6500 switches with msfc routing and supervisor cards.. Larry Letterman Cisco Systems [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Jeffrey Reed Sent: Saturday, March 16, 2002 2:15 PM To: [EMAIL PROTECTED] Subject: Finding a MAC address [7:38560] What utilities are you guys using to find MAC addresses across a large campus network? If I have an end users IP address, check the routers ARP for their MAC, whats the easiest way to find out which switch port? Thanks!! Jeff Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38601&t=38560 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
