Re: Network management software with high detailed traffic report

[Livio Zanol Puppim <livio.zanol.puppim () gmail com>]

IT depends on the manufacturer. Cisco can updates OIDs even on 1 second time
basis (maybe less?).

A long time ago I've made an "real time monitor" to troubleshooting problems
at the WAN. IT was not a NMS, only visual graphs using PHP and RRDtool in
one page showing IfOctests, IfDiscards, IfErrors, IfNUnicast and, in some
cases, BECN and FECN for frame relay.

2010/11/22 Sergey Voropaev <serge.devorop () gmail com>

> Steinar,
>
> I'm sure that router updates its counter more often than 5 seconds.
>
>
> On 22 November 2010 12:46, <sthaug () nethelp no> wrote:
>
> > > Does any one know the NMS (network management software) which can do
> the
> > > fallowing:
> > >
> > > 1. Monitor on Cisco Routers/Switches interface utilization every 5-10
> > > seconds and send e-mail alarm when utilization low or high of
> predefined
> > > thresholds.
> > > 2. Collect net-flow statistics (at least src/dst) with granularity of
> > 5-10-
> > > seconds.
> > >
> > > The main idea is to have detailed monitoring of the external links and
> to
> > be
> > > able to know why (by what traffic type) and when link was highly
> > utilized.
> >
> > Your requirements are somewhat unrealistic. Even if your NMS can fetch
> > SNMP counters / Netflow info every 5-10 seconds, you have no guarantee
> > that the router *updates* the counters / Netflow info this often.
> >
> > Talk to your router vendor first.
> >
> > Steinar Haug, Nethelp consulting, sthaug () nethelp no



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Lívio Zanol Puppim