From: Michael Doherty (z0rand3r@hotmail.com)
Date: Mon Jan 05 2004 - 15:54:09 GMT-3
You can use the Switch Port Mapper from SolarWinds. It is available in the
SolarWinds 2002 Engineers Edition. You can download a trial version, which
will allow the functionality, but will not allow you to export the results
(so, you will have to run the routine, then manually note the data
retrieved).
HTH
Mike
>From: "Kenneth Wygand" <KWygand@customonline.com>
>Reply-To: "Kenneth Wygand" <KWygand@customonline.com>
>To: <ccielab@groupstudy.com>
>Subject: Determine network devices on flat network
>Date: Mon, 5 Jan 2004 13:41:38 -0500
>
>Hello everyone and Happy New Year -
>
>
>
>I have about 20 switches set up as a flat network with no VLANs
>(10.0.0.0). Different device groups all have a common second octet
>(clients are 10.0.x.x, printers are 10.1.x.x, servers are 10.2.x.x) but
>the network is flat, as they all use a /8 (255.0.0.0) mask. The
>printers, for example, are scattered across all switches but have
>10.1.x.x addresses. I need to find out what physical ports each printer
>is plugged into. I have ping-swept the 10.1.x.x range and found about
>150 printers total. However, I need to now find out what switch port
>each printer connects to (actually all I need to know is which switch,
>not necessarily which port).
>
>
>
>I know I can just enable CDP on the switch and sniff the actual drop
>that each printer is connected to and analyze the advertised information
>from the switch to determine where each printer is located, but 150
>printers is too many to do this on. Is there any easier way to
>determine which switch each printer connects to? I'm thinking it has to
>employ some layer-2 technology, but since the network is flat, the ARP
>table will only reside on layer-3 devices (of which the switches are
>not).
>
>
>
>The network is entirely Cat3550 switches running SMI images.
>
>
>
>Any suggestions are greatly appreciated! Thanks!
>
>
>
>Kenneth E. Wygand
>Systems Engineer, Project Services
>
>CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
>Network+, A+
>Custom Computer Specialists, Inc.
>
>"Treat your password as you do your toothbrush; change it every six
>months and don't let anyone else use it."
>-Anonymous
>
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