Re: Where should DNS be listening?

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Ace Fekay [MVP] (PleaseSubstituteMyActualFirstName&LastNameHere_at_hotmail.com)
Date: 12/03/04

  • Next message: Ace Fekay [MVP]: "Re: DNS is not responding to the queries properly." 
    Date: Fri, 3 Dec 2004 00:11:41 -0500

    In news:ObVu3sN2EHA.824@TK2MSFTNGP11.phx.gbl,
    William Stacey [MVP] <staceywREMOVE@mvps.org> made a post then I commented
    below
    >> I assume (I'm not an expert) that, during initialisation, the DNS
    >> server must enumerate the available IP interfaces and decide on which
    >> of them it should provide service.
    >
    > Well said. In WinSock you can listen on 0.0.0.0 (or Any) that will
    > listen on all IPs on all addapters. This can be ~"cheaper" then
    > explicitly listening on multiple IPs as you can just run one listener
    > socket and thread to do it. Once you have to listen on multiple
    > sockets, you need multiple threads or some form of async server. The
    > threads are not that big of deal but they do have a small cost.

    Now that I didn't know! Always thought it was one thread, but this makes
    sense. More overhead.

    Question, is this by each physical interface or is it the same for multiple
    IPs on one interface?

    Thanks William! 

    -- 
Regards,
Ace
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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft Windows MVP - Windows Server - Directory Services
Security Is Like An Onion, It Has Layers
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  • Next message: Ace Fekay [MVP]: "Re: DNS is not responding to the queries properly."

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