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APIPA

Discussion in 'General Microsoft Certifications' started by Boycie, Aug 22, 2006.

  1. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    Although i can do this at home, i am in the middle of a download and would rather not interrupt it so here goes;

    Chapter 12 Supporting TCP/IP

    It wants you to either unplug your LAN connection or disable the DHCP server. I tried unplugging the LAN connection in work today, but when i tried to ipconfig/release it told me it wouldn't do anything while the media isn't connected.

    My question is, what will Windows tell you if you /release then renew with no DHCP availible?
    I guess it will just say something along the lines of we have issued you a APIPA and will try every five minutes, but would like to know what it really does say!

    Si
     
    Certifications: MCSA 2003, MCDST, A+, N+, CTT+, MCT
  2. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    If you release and renew with no DHCP you just get an APIPA address again. Plus the comment about limited connectivity.

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  3. zebulebu

    zebulebu Terabyte Poster

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    As far as I'm aware, WIndows isn't intelligent enough to tell you there isn't a DHCP server available to service your request. You'll get the little 'Problems with your network connection' pop-up hanging over the icon representing your NIC in the system tray - with the natty little yellow triangle & black exclamation mark, but I don't think it ever tells you that it has assigned you an APIPA address.
     
    Certifications: A few
    WIP: None - f*** 'em
  4. hbroomhall

    hbroomhall Petabyte Poster Gold Member

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    It tells you - but in typical windows fashion it uses an obscure phrase. It tells you you have 'Limited connectivity'.

    Harry.
     
    Certifications: ECDL A+ Network+ i-Net+
    WIP: Server+
  5. zimbo
    Honorary Member

    zimbo Petabyte Poster

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    si to know that you have an APIPA address it must be in range 169.254.0.1-169.254.255.254 anything in there is an APIPA address... Windows *knows* that if it must pick up an IP automatically (instead of you manually putting it in in the TCP/IP configuration) and no DHCP server is available AND no alternative IP configuration is available then APIPA kicks in...
     
    Certifications: B.Sc, MCDST & MCSA
    WIP: M.Sc - Computer Forensics
  6. Boycie
    Honorary Member

    Boycie Senior Beer Tester

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    Thanks for all your input, i just needed it confirmed.

    Si
     
    Certifications: MCSA 2003, MCDST, A+, N+, CTT+, MCT

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