You appear to have a medium sized network - which would normally be divided into subnets and/or VLANs, most likely all connected to a core router.

The core router in this scenerio would be the only device that is aware of all other devices that are communicating on the network, and it needs to maintain an ARP cache.

You should be able to get the contents of the ARP cache, which contains MAC to IP address mappings, either via SNMP, or via telent.

if you /msg me, I could share a crude but functional perl script that I have that collects this information using Net::Telnet, from an Enterasys router.

     "For every complex problem, there is a simple answer ... and it is wrong." --H.L. Mencken

In reply to Re: Mac Addresses by NetWallah
in thread Mac Addresses by Ronnie

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.