RE: Open-Source Network Management Tools

["Michael Smith" <mksmith () noanet net>]

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> -----Original Message-----
> From: Alexei Roudnev [mailto:alex () relcom net]
> Sent: Friday, September 17, 2004 12:53 AM
> To: Michael Smith; nanog () merit edu
> Subject: Re: Open-Source Network Management Tools
>
> I always tried to avoid any deal with SNMP TRAPS as most unreliable
> and unconvenient way of alerting (unfortunately, it can not be
> avoided totally).
> We use 'syslog' (syslog-ng + home written syslog analyzers +
> copmmercial soft, sometimes) when possible.

Unfortunately, SNMP TRAPS are what is available on the SONET
transport side of the network.  There is no useful data to be gotten
from polling.  In addition, the fact that TRAPS are proactive instead
of reactive means I have am immediately aware of network events
whereas I might miss something with a poll.

In addition, we have dry contact closures on these devices that TRAP
only, no polling.  Thankfully, the number of these events is small
enough that syslog functions quite well.

Syslog has not been up to the task of working with the sheer volume
of TRAPS generated when there is a significant event on the optical
network.  Sometimes we see the notification but not the resolution,
sometimes we see all but the last line of a TRAP message, and
sometimes we get nothing.  

Thanks,

Mike

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