Re: PSINet/Cogent Latency

[Vadim Antonov <avg () exigengroup com>]

Some long long long time ago I wrote a small tool called snmpstatd.  Back 
then Sprint management was gracious to allow me to release it as a 
public-domain code.

It basically collects usage statistics (in 30-sec "peaks" and 5-min
averages), memory and CPU utilization from routers, by performing
_asynchronous_ SNMP polling.  I believe it can scale to about 5000-10000
routers.  It also performs accurate time base interpolation for 30-sec
sampling (i.e. it always requests router's local time and uses it for
computing accurate 30-sec peak usage).

The data is stored in text files which are extremely easy to parse.

The configuration is text-based; it also includes compact status alarm 
output (i.e. which routers/links are down),  PostScript chart generator,
and troff/nroff based text report generator, with summary downtime and
usage figures + significant events.  The tool was used routinely to 
produce reporting on ICM-NET performance for NSF.

This thing may need some hacking to accomodate later-day IOS bogosities,
though.

If anyone wants it, I have it at www.kotovnik.com/~avg/snmpstatd.tar.gz

--vadim

On Mon, 22 Jul 2002, Gary E. Miller wrote:

> Yo Alexander!
>
> On Tue, 23 Jul 2002, Alexander Koch wrote:
>
> > imagine some four routers dying or not answering queries,
> > you will see the poll script give you timeout after timeout
> > after timeout and with some 50 to 100 routers and the
> > respective interfaces you see mrtg choke badly, losing data.
>
> Yep.  Anything gets behind and it all gets behind.
>
> That is why we run multiple copies of MRTG.  That way polling for one set
> of hosts does not have to wait for another set.  If one set is timing
> out the other just keeps on as usual.
>
> RGDS
> GARY
> ---------------------------------------------------------------------------
> Gary E. Miller Rellim 20340 Empire Blvd, Suite E-3, Bend, OR 97701
>       gem () rellim com  Tel:+1(541)382-8588 Fax: +1(541)382-8676