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Forums » Internetwork Expert Products » CCIE R&S Lab Workbook Volume II Version 4.1 » IEWB-RS Volume 2 Version 4.1 Lab 18 » task 8.2 - thoughts on including tcp port 1720
Latest post 12-26-2008 9:52 PM by bam. 5 replies.
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  • 11-14-2008 7:23 PM

    • taburley
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    task 8.2 - thoughts on including tcp port 1720

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    Hi all -

    I'm not sure I agree with the AK with this task to include tcp port 1720.  That's call set up...any thoughts?

     

    many thanks -

     

    LG

    r/

    Tammy
    • Post Points: 35

  • 11-30-2008 4:21 PM In reply to

    • smokey
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    Re: task 8.2 - thoughts on including tcp port 1720

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    I was thinking the same thing.  I took "VOIP traffic" to mean just the payload, not the setup.
    • Post Points: 5

  • 12-08-2008 5:08 AM In reply to

    • yknife
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    Re: task 8.2 - thoughts on including tcp port 1720

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    １。permit tcp any any eq 1720

    ２。permit udp any any range 16384 32767

     

    １。Signalling should be included（tcp port 1720）

    ２。Payload can be remembered with

         permit udp any any range ?

         65535/4 ceiling = 16384

         65535/2 floor = 32767

     
    • Post Points: 35

  • 12-24-2008 8:24 PM In reply to

    • skint
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    Re: task 8.2 - thoughts on including tcp port 1720

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    I would have to agree with Tammy on this as well.  I think I would ask the proctor for clarification, I don't know why we're assuming call setup is H323, as opposed to Skinny/MGCP/SIP.  Really does seem arbitary...  And on the subject of port numbers, those are the port numbers that Cisco uses, many implementations use above and below that range.

    It's typical to apply a bandwidth guarantee for call setup, not a priority queue.

     
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  • 12-26-2008 9:31 PM In reply to

    • skint
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    Re: task 8.2 - thoughts on including tcp port 1720

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    I guess it helps if I read ahead, clearly H323 is being used Yes
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  • 12-26-2008 9:52 PM In reply to

    • bam
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    Re: task 8.2 - thoughts on including tcp port 1720

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    Where do you draw the line?....

    R2#sh ip nbar port h323
    port-map h323          udp 1300 1718 1719 1720 11720
    port-map h323          tcp 1300 1718 1719 1720 11000 - 11999

    • Post Points: 5
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