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Latest post 12-17-2016 11:56 AM by Martinl. 2 replies.
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  • 12-15-2016 12:40 PM

    wrong into this lecture

    hi everyone into IEOC


    there`re some error into this lecture into "The CCNA Candidate’s Guide to OSPF"

    with  "Instructor: Travis Bonfigli"




    ospf don` using (10)xy7/BW , that is wrong into this video


    ospf is using (10)xy5 / BW >>>>>>>>>>>>>>  100m/w>>>>>100.000/BW(K/s)


    • Post Points: 20
  • 12-15-2016 1:49 PM In reply to

    Re: wrong into this lecture

    Mohamed, hello and thank you so much for your feedback!  In looking over the slide and the tutorial video that goes with it, I initially thought I might have used 10^7 instead of the 10^8 for the OSPF Reference Bandwidth value - which would have been a terrible mistake on my part. However, in looking at the slide, the value listed is 10^8 written out in decimal (so, 100,000,000 - which is 100Mbps represented as bits per second).  I do see, however, where that might have caused some confusion (and I am very sorry for that!) as I have '[interface speed]' instead of maybe adding in 'in bits per second (bps)' to make things more clear since that was the unit of measure I was working with in the example. During the video (which you have pictured below the initial slide) It looks like I am showing how changing the cost of the OSPF Reference Bandwidth value would result in a cost of 1 depending on the link speed and the value you use.  So, when I increased The OSPF Reference Bandwidth to 1Gbps (and in the actual command you enter the value in Mbps, so the command under the OSPF global configuration section would be: 'auto-cost reference-bandwidth 1000' - and that could be a bit confusing as well when transitioning between units of measure as well) that results in a value of 1,000,000,000 in bits per second.  For 10Gbps we just add in another '0' and the idea was to show the equivalent value for the interface/link speeds in bits per second.  Again, my apologies for any confusion this might have caused you and I hope this provides some clarification and again, thank you so much for your feedback!



    Travis Bonfigli

    Author: The CCNA Candidate's Guide to OSPF

    • Post Points: 20
  • 12-17-2016 11:56 AM In reply to

    Re: wrong into this lecture

    thanks for fixing


    • Post Points: 5
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