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auto qos voip question

Discussion in 'Voice' started by Septima77, Oct 5, 2009.

  1. Septima77

    Septima77 Nibble Poster

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    According to cisco documentation
    http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/autoqos_voip.html#wp1071316
    the auto qos voip command can only be used on serial interfaces (and ATM, FR).

    In my cisco ccna voice book on page 294 it shows a config with auto qos voip cisco-phone command on interface fa0/3.
    What is the deal here?
    Since my 3524XL switch does not support auto qos, I cannot practically check this feature. Can somebody shed some light on this enigma?
     
    Certifications: CCNA CCNAS CCNAV
    WIP: CCVP
  2. danielno8

    danielno8 Gigabyte Poster

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    nope you can, not sure the ins and outs but we have it configured on our 2950's offshore, and before we moved to nortel our 3550 had it also.
     
    Certifications: CCENT, CCNA
    WIP: CCNP
  3. Septima77

    Septima77 Nibble Poster

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    Talked to a technician at my work and according to him auto qos is available on cisco L3 devices (3550/3560 and up).
    I could not get it to work on my c2611xm router, but that was only because it is configured as a router on a stick and auto qos does not work on sub-interfaces. When I brought the other fa interface up, the auto qos command was available.
    This whole qos, cos, tos subject makes my head spin :)
     
    Last edited: Oct 6, 2009
    Certifications: CCNA CCNAS CCNAV
    WIP: CCVP
  4. danielno8

    danielno8 Gigabyte Poster

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    Certifications: CCENT, CCNA
    WIP: CCNP
  5. Septima77

    Septima77 Nibble Poster

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    Yes, so it seems. But you do need the EI (Enhanced Image) version.
    And apparently CEF must be enabled. Something to do with nBAR.
    I can see I am going to break my brain on QoS :dry

    Thanks for the link, much appreciated.
     
    Certifications: CCNA CCNAS CCNAV
    WIP: CCVP
  6. danielno8

    danielno8 Gigabyte Poster

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    yep lol, 2 weeks ago i didn't even know what DSCP was. It's a head masher haha
     
    Certifications: CCENT, CCNA
    WIP: CCNP
  7. Septima77

    Septima77 Nibble Poster

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    Hey Danielno8, you live in the Town of Roses and have routers offshore... working for an oil company?

    I have had my fair share of days offshore. When I was young and dumb and full of .... it, being a professional diver. :D
     
    Certifications: CCNA CCNAS CCNAV
    WIP: CCVP

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