[mrtg] How to config to measure the broadband traffic ( 3 Static IP address range and 1 IP gateway ) ?

[Craig Humphrey]

Hi Edward,

Well, each broadband router can be different, but the basic steps are:


1.    Ensure your broadband router has SNMP turned on and that you know the "community" name (usually "public")

2.    Have a web server installed and running on the PC/Server that will run MRTG.

3.    Make sure you have Perl installed (if you're using a Microsoft Windows based PC/Server, then ActiveState Perl<http://www.activestate.com/activeperl> is a good start)

4.    Make sure that you have MRTG installed (the official MRTG instructions<http://oss.oetiker.ch/mrtg/doc/index.en.html> are a good place to start)

5.    Use the MRTG script "cfgmaker<http://oss.oetiker.ch/mrtg/doc/cfgmaker.en.html>" to scan your broadband router for its network ports. Most likely, it will have at least two, one for broadband and one for your internal network. (Note: if it has an on-board multiport switch, this may appear as multiple ports, or [as in the case of my Netgear router!] a single port.
You'll want to point the output at a folder that is being served up by your webserver.

6.    You may like to use the MRTG script "indexmaker<http://oss.oetiker.ch/mrtg/doc/indexmaker.en.html>" to make a pretty index page of the ports that you're monitoring.

7.    Run MRTG<http://oss.oetiker.ch/mrtg/doc/mrtg.en.html> manually a couple of times to make sure there are no errors. Don't forget to check that you can get to the pages on your website.

8.    Run MRTG as a service/daemon.  Refer to the MRTG docs<http://oss.oetiker.ch/mrtg/doc/index.en.html> on the best way to do this for your PC/Server (unix is easy, Windows requires a little effort)

9.    You're done.

Note: if the PC/Server that is running MRTG goes down, then you'll end up with blanks/straight lines in your graphs. Also watch out for routers that lose their SNMP settings when they are rebooted (like mine Netgear, grrrr)

Any other issues, read the great online documentation and if you're still stuck, post to this mailing list.

Later'ish
Craig
[feeling overly helpful today]


From: Edward S.P. Leung [mailto:edwardspl.mo at gmail.com]
Sent: Monday, 22 November 2010 4:32 p.m.
To: Craig Humphrey
Cc: mrtg at lists.oetiker.ch
Subject: Re: [mrtg] How to config to measure the boardband traffic ( 3 Static IP address range and 1 IP gateway ) ?

Hello Craig,

I want to measure the total traffic...
So, how to point MRTG at ADSL machine and ensure it picks up the port carrying the broadband traffic ?

Thanks !

Edward.
2010/11/22 Craig Humphrey <Craig.Humphrey at chapmantripp.com<mailto:Craig.Humphrey at chapmantripp.com>>
Hi Edward,

If you're wanting to measure your total traffic, then just point MRTG at your broadband router and ensure it picks up the port carrying the broadband traffic.

If you're wanting to measure the traffic per IP, then you'll need some other tool (like ntop say) which looks at individual IPs.

Hope that helps.

Later'ish
Craig


From: mrtg-bounces+craig.humphrey=chapmantripp.com<http://chapmantripp.com>@lists.oetiker.ch<http://lists.oetiker.ch> [mailto:mrtg-bounces+craig.humphrey<mailto:mrtg-bounces%2Bcraig.humphrey>=chapmantripp.com<http://chapmantripp.com>@lists.oetiker.ch<http://lists.oetiker.ch>] On Behalf Of Edward S.P. Leung
Sent: Wednesday, 17 November 2010 9:00 p.m.
To: mrtg at lists.oetiker.ch<mailto:mrtg at lists.oetiker.ch>
Subject: [mrtg] How to config to measure the boardband traffic ( 3 Static IP address range and 1 IP gateway ) ?

Dear All,

Would you mind to help ?
Any hints ?

Thanks !

Edward.

This email is intended solely for the use of the addressee and may contain information that is confidential or subject to legal professional privilege. If you receive this email in error please immediately notify the sender and delete the email.


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