On 1/13/06, Matthew Jarvis <[EMAIL PROTECTED]> wrote:
Generally. The color-coding on MRTG graphs can sometimes be logically inverted in terms of "in" and "out". The easiest way I've found to figure it out is to cause some sort significant traffic over a long period of time, a big download for instance, the you can clearly see which one MRTG thinks is "IN", and then if neccesary switch it so that it makes sense to you when you read it.
It is "bits" but that is modifiable in mrtg.cfg on a per-interface basis if some other unit makes more sense to you.
Generally this is true. Keep in mind however that this is showing you a 5-minute slice. This means that it is not very fine-grained, and so bursty peaking of your connection could be getting averaged out. This limits it's utility for tracking down the source of "My Internet is slow" reports. I use it just to keep my eye out for blatant abuse, which in a public school setting, we see a lot of.
Also, latency plays a big part in how fast "The Internet" feels. If you need to monitor that, I suggest using smokeping. Really really nice tool. http://people.ee.ethz.ch/~oetiker/webtools/smokeping/ . In a nutshell, point it to some off-site server, router, or what have you (your first hop ISP router is often a good choice) and it will show you all sorts of interesting latency information on your link at (IIRC) arbitrary intervals. This is much better tool for measuring the responsiveness of your link.
This is an IP address from the outside world looking in.
Generally. The color-coding on MRTG graphs can sometimes be logically inverted in terms of "in" and "out". The easiest way I've found to figure it out is to cause some sort significant traffic over a long period of time, a big download for instance, the you can clearly see which one MRTG thinks is "IN", and then if neccesary switch it so that it makes sense to you when you read it.
Our max bandwidth on that port is 1250kilobytes per second.
Does "kb/s" mean KilyBytes per sec, or Kilobits per sec ? Is it just a
typo or did they intend it to be described this way i.e. different unit
of measure?
It is "bits" but that is modifiable in mrtg.cfg on a per-interface basis if some other unit makes more sense to you.
Looking at the Average (or any of them for that matter) we aren't even
coming close to max'ing out our capacity.
The above is important to me, because I get people coming to me all the
time saying "the internet is slow".... after I stop laughing I tell them
I'll look into it.... but these stats could support the idea that,
assuming no peak use flooding our system, that bottlenecks exist
upstream from us rather than within our infrastructure here.
Generally this is true. Keep in mind however that this is showing you a 5-minute slice. This means that it is not very fine-grained, and so bursty peaking of your connection could be getting averaged out. This limits it's utility for tracking down the source of "My Internet is slow" reports. I use it just to keep my eye out for blatant abuse, which in a public school setting, we see a lot of.
Also, latency plays a big part in how fast "The Internet" feels. If you need to monitor that, I suggest using smokeping. Really really nice tool. http://people.ee.ethz.ch/~oetiker/webtools/smokeping/ . In a nutshell, point it to some off-site server, router, or what have you (your first hop ISP router is often a good choice) and it will show you all sorts of interesting latency information on your link at (IIRC) arbitrary intervals. This is much better tool for measuring the responsiveness of your link.
--
-Regards-
-Quentin Hartman-
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