Network Monitoring?

[Hammond, Robin-David%KB3IEN]

All these things are good also i suggest:

measuring TX packets on one end and RX packets on the other end of a link 
is a good indication of the quality of the link. Using NTP + nanosleep to 
get hyperaccuate readings helps spot small problems quickly. Even using 
asyncronous readings will spot a sketchy link given enough time.

disparity of MTU/MRU is also a problem, but it normaly results in 
catastrophic failures that show up in other ways first.

again all the usuall rants that hubs surpass unmanaged switches for most 
networks.



On Mon, 26 Jun 2006, jeff vier wrote:

> Date: Mon, 26 Jun 2006 13:10:04 -0500
> From: jeff vier <boinger at tradingtechnologies.com>
> To: "Pavleck, Jeremy D." <Jeremy.Pavleck at capella.edu>
> Cc: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] Network Monitoring?
> 
> On Mon, 2006-06-26 at 13:00 -0500, Pavleck, Jeremy D. wrote:
>> Greetings,
>>  This may be an odd question, considering my title is Network Engineer -
>> but I'm the monitoring guy, and am going to setup a new instance of
>> nagios dedicated to the network side of things - so simple question,
>> what should I monitor as a general rule on each switch? Router?
>
> Here we monitor:
> CPU Load
> IOS Version
> Input Errors
> Ping
> SNMP Traps
> Uptime
> Various interface statuses
> All interfaces' bandwidth via MRTG
>


I have made this tar.bz2 longer (-6), because I lacked the cycles to make it shorter (-9).



Robin-David Hammond	KB3IEN
 	www.aresnyc.org.

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