?
Solved

Reading bandwidth usage in MRTG or Cacti

Posted on 2009-02-19
3
Medium Priority
?
1,429 Views
Last Modified: 2012-05-06
I need help understanding bandwith usage graphs, actually just some clarification.

When looking at a graph from MRTG or Cacti of a WAN interface. If at a certain point Inbound is say 3Mb and Oubound is say 2.5Mb.
Total bandwith usage would be 5.5Mb?
And a 6Mb pipe would be almost saturated right?
cactiexample.jpg
0
Comment
Question by:mike_lfcu
  • 2
3 Comments
 
LVL 8

Accepted Solution

by:
JustWorking earned 375 total points
ID: 23688340
It depends on your connection and how it is hosted. If you have typical T1s and you say 6MB pipe I assume you have a 3XT1 meaning 3 bonded T1s. A typical T1 is 1.54MB Outbound and 1.54 Inbound. Do your 6MB or your 3XT1 is 6MB OUT and 6MB IN (not total combined)so you do not add the in and out traffic as they are independent.
This is why the graph shows you both Inbound and Outbound as green and blue. From this sample you have not reached past 4MB in or out so it is not saturated...rather about 66% peak of your 6MB in or out and your average is way below.
0
 

Author Comment

by:mike_lfcu
ID: 23689196
We have a fractional-DS3 set at 6MB.
0
 
LVL 8

Assisted Solution

by:JustWorking
JustWorking earned 375 total points
ID: 23691403
That too will be as described above 6MB IN and 6MB out. Thanks, JW
0

Featured Post

Rewarding opportunities for women in IT

Across the nation, technology jobs are vacant because there aren’t enough qualified professionals to fill them. With a degree from WGU, you can get the credentials it takes to become an in-demand IT professional. Plus, WGU’s IT programs include industry certifications.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Is your computer hacked? learn how to detect and delete malware in your PC
Today, still in the boom of Apple, PC's and products, nearly 50% of the computer users use Windows as graphical operating systems. If you are among those users who love windows, but are grappling to keep the system's hard drive optimized, then you s…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question