Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

switch port mapping - need to know DNS names connected to switch ports

I'm new here :) I'm a network technician/low-voltage electrician and I need to determine which machines are connected to our switch ports. Is there a Cisco tool that will provide this information? The company does not want to pay for SolarWinds :(

2 REPLIES
Cisco Employee

Re: switch port mapping - need to know DNS names connected to sw

I know of no free tools that can do this, but this tech tip explains how to figure out what MAC address is connected to which port. From there, you can use the ARP table available in the ipNetToMediaTable to map the MAC address to IP address. Then you simply resolve this IP to a hostname in DNS.

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094a9b.shtml

New Member

Re: switch port mapping - need to know DNS names connected to sw

177
Views
5
Helpful
2
Replies