Comments on: HowTo: Find switchport for a MAC Address on a Cisco Catalyst Switch

By: Florin Sfetea

Florin Sfetea — Thu, 28 Jan 2010 11:47:37 +0000

on your core router holding all your gateways try

sh ip arp xxxx.xxxx.xxxx

you should get the
protocol ip_Address Age Hardware Addr(MAC) Type Interface
eg.
Internet 192.x.x.x 80 xxxx.xxxx.xxxx ARPA VlanXX

By: amit

amit — Sat, 16 Jan 2010 08:13:27 +0000

thanks

amit yadav

By: gip

gip — Fri, 30 Oct 2009 17:40:21 +0000

I’ve read many of these articles explaining this process but where I always have trouble is obtaining the correct MAC address. From the core switch, when I perform a sh ip arp 10.x.x.x I get a blank response. When I try this from a distribution switch, I get a MAC address in return, but not the MAC of the actual system I’m trying to locate. I believe it’s the MAC address of the etherchannel Po1 that’s being returned. I verified this by RDP’ing to the actual system and verifying it’s MAC address, but many times, this is not possible. Argghhh, might have to look into this ziptie thing.

By: Cisco

Cisco — Mon, 26 Oct 2009 12:52:21 +0000

how to bind an public Ip with the MAC address in either Cisco switch 2960 or Cisco Router 1842 series

By: sonp

sonp — Fri, 31 Jul 2009 10:03:56 +0000

Cool! step. Thnks from Thai-Network Admin.

By: admin

admin — Wed, 14 Nov 2007 20:06:41 +0000

Hi,

Thanks for the input. I’ve been watching and evaluating Ziptie for quite sometime…Was just going to do a write up on ziptie and other similar tools (all opensource). You just got here early

Ziptie is a great product, great framework!!!!

Kumaran

By: Brett Wooldridge

Brett Wooldridge — Wed, 14 Nov 2007 19:11:21 +0000

Have you tried ZipTie? It’s an open source network management program that does this kind of stuff for breakfast! Seriously, like right-click on a switch and run the Switchport/MAC mapping tool, view the results. Then even type in an IP address and it will tell you which MAC it is and which switchport it is connected to. Talk about handy for finding which port a desktop machine is connected to!

I noticed you also had a blog about how to show chassis serial number and part numbers. ZipTie captures all that too along with backing up your device configurations. And it supports not just IOS, but Juniper, Nortel, Radware, Force10, and a bunch of equipment providers.

I know all this because I work on the ZipTie project!

Seriously, we’re awesome. No network engineer should be without us.

By: eraser’s blog » Blog Archive » HowTo: Find switchport for a MAC Address on a Cisco Catalyst Switch

Wed, 14 Nov 2007 19:07:24 +0000

[...] then tracing a device like a PC or a laptop for troubleshooting or security purposes … http://www.itsyourip.com/cisco/howto-find-switchport-for-a-mac-address-on-a-cisco-catalyst-switch/ ItsyourIP.com [...]

By: Iphone | Apple | Mac Blog » HowTo: Find switchport for a MAC Address on a Cisco Catalyst Switch

Wed, 14 Nov 2007 18:25:26 +0000

[...] admin added an interesting post on HowTo: Find switchport for a MAC Address on a Cisco Catalyst SwitchHere’s a small excerpt [...]