[c-nsp] Network Topology Mapping

[Sami Joseph]

Hi Roland,

Thanks.

The point is i dont really know all the devices we have, so i cant be sure
that they all have snmp and CDP configured.

Is there a way around that?

on the top of my head, i would do a port scan and based on that i would go
into each device and make sure each has SNMP and CDP before i start
discovering.

Which open source one would you recommend ?

How about CiscoWorks?

Thanks,
Sam

On 10/28/07, Roland Dobbins <rdobbins at cisco.com> wrote:
>
>
> On Oct 28, 2007, at 3:27 PM, Roger Oliver wrote:
>
> > I'm very interested to hear what others do.
>
> PacketDesign RouteExplorer does good visualizations based upon BGP
> and IGP, and Narus InSight Manager does visualization based upon
> BGP.  There are also tools like lanmap, which watch packets via RSPAN
> in a given locality.
>
> Several of the open source and commercial NMS systems do SNMP-based
> autodiscovery; it's important to test these out and ensure they're
> tuned not to be overly aggressive prior to running the autodiscovery,
> monitor your network while it's taking place, do it during a
> maintenance window, etc.
>
> Some folks use GraphViz with a bit of Perl-fu on their configs to
> generate graphs, too.
>
> -----------------------------------------------------------------------
> Roland Dobbins <rdobbins at cisco.com> // 408.527.6376 voice
>
>            I don't sound like nobody.
>
>                 -- Elvis Presley
>
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