Multiple MAC Addresses on Access Port

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Jun 30th, 2010
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We are trying to determine a way that we could easily view the mac table and only display the ports or macs that have multiple mac address attached to them.  We have a VOIP intiative that we are working on but we need to make sure there are no rogue hubs or switches attached at the access layer. Any guidance would be appreciated.

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John Blakley Wed, 06/30/2010 - 09:10
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I'm not sure if there's an easier way to do it, but here are a couple of options.


If you know what port you're concerned with, run:


sh mac address-table | inc


OR


sh mac address-table interface g3/0/27


HTH,

John

vladimirsaltao Wed, 06/30/2010 - 09:12
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Best way, in my opinion, is to create a perl script from scratch.

Second best way is to use one that is already available like this one :

http://codewiki.wikispaces.com/cammer_c.pl

From the page:  "It will scan your network switches and provide information to help identify the devices attached to each port."

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