Bandwidth Reports

rboklewskirboklewski
edited November 2007 in Monitoring Software v12 and lower
This is strange, I ran a bandwidth report and im not sure if it is showing the correct totals. I have some screen-shots below of some graphs of one of the problem machines im looking into and the report itself. I ran the bandwidth report for the last 6 hours and this computer im looking into was turned on at 8 o'clock today from being off the whole weekend. The numbers looked high from the graphs, but as far as the bandwidth report it doesn't look like the totals are being accurately portrayed.



Also, the machine in question was watching a streaming video, but I still can't see why one video could be slowing down the entire network.





Let me know what you guys think.





http://img225.imageshack.us/my.php?image=bandwidth1tr2.gif



http://img69.imageshack.us/my.php?image=bandwidth2kp1.gif



http://img69.imageshack.us/my.php?image=bandwidth3io3.gif

Comments

  • AdministratorAdministrator
    Traffic is incoming and outgoing bytes combined. Bandwidth is separated between in and out.



    It is recommended not to use traffic and bandwidth rules on the same OID as OID counters can be reset after GET requests.



    The bandwidth report gives you the data.



    In terms of slowing down the network, you won't see that on that by monitoring bandwidth on a system; for that you need to perform network analysis on switch or router level to see what type of data is causing network congestion.


  • rboklewskirboklewski
    I can definitely see when a user is watching a high quality streaming video our bandwidth reads in at about 350-450kb down, when I run a bandwidth test as the streaming video is running. We have a full t1 line, which should read at the least 90% of the actual rate which is 1.545. Could one streaming video cause this much degredation.
  • gmillerarmtgmillerarmt
    I have seen this performance issue on one of the private T1s that I have. It turned out to be an issue w/ the T. The T was slipping, so when bandwidth demands were low you didn't notice a speed issue but once a user started to stream or transfer files things got really, really slow. To slow for the amount of bandwidth that was being reportedly used. Looking at the T1 interface counter on the router showed a very high amount of input and CRC errors; which confirmed the issue of slipping and the symptom of slow network speeds even though I was only using 1/3 of the bandwidth of the T1.



    Hope this helps...
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