[mrtg] Re: Off-Topic: "ambient traffic"

[Jelle Beusen]

Keepalives etc also generate some trafiic and monitoring tools.

You could check this on the cisco's it almost sounds like it .

Are you running any route discovery protocols on this router ?

the other thing you could do is setup an acl to account all traffic this
will also tell you what is going through it.

And then there is ofcause the sniffer as stated before :)


but I have a simular thing here and most of it is arp traffic keep alive
pols etc .

hope this helps.

----- Original Message -----
From: "Reed Mohn, Anders" <Anders.Reed.Mohn at itcompagniet.no>
To: "Mrtg mailing list (E-mail)" <mrtg at list.ee.ethz.ch>
Sent: Friday, June 01, 2001 11:24 AM
Subject: [mrtg] Off-Topic: "ambient traffic"


>
>
> We have two routers connecting us to a couple of links that are
> practically never used. Thus, most of what's graphed looks like
> just "ambient noise". I assume this is the traffic from/to MRTG
> itself that shows.
> The routers are a Cisco 2503 and a Cisco 3620.
>
> What I'm wondering is this:
> I monitor 2 interfaces on the 2503, and three interfaces on the 3620.
> I am measuring a "constant" stream of 200bps into and
> 100bps out of the 2503 LAN IF.
> For the 3620 it's <20bps into and about 100bps out of the LAN IF.
>
> Why the enourmous difference in ingoing traffic?
> Is the 2503 picking up more stuff than just the MRTG-traffic,
> or is this the amount of traffic I should expect?
>
> The volume is so low, it doesn't really matter, but the difference just
> annoys me....
>
> Cheers,
> Anders :)
>
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