DNS help

By Mamut0o1
May 14, 2008
  1. I'm trying to design a way so if host "A" fails Host "B" will take over.
    If my computer can not connect to Host "A" DNS will resolve to go to Host "B".
    I was hoping in anyone could help me how to set this up using a DNS server.
  2. jobeard

    jobeard TS Ambassador Posts: 8,945   +584

    that's automatic in the TCP config. If you look, there should be TWO DNS addresses.
    Failure on the first (or a timeout) will cause the second to be used.

    HOWEVER: you can't just slam in any two DNS addresses!

    If you want to use manual DNS configuration, then you must be able to use
    nslookup dns-addr-1
    nslookup dns-addr-2
    both requestions must return an IP address for google -- anything else will mean
    that the dns-addr-x used may be valid but is not configured for a recursive query and
    you MUST find some other dns address to use.

    You would be better off using the TCP DHCP supplied DNS address(es)
  3. gilloz

    gilloz TS Rookie Posts: 88

    Have you considered Check it out.
  4. Justin

    Justin TS Rookie Posts: 942

    The file /etc/resolv.conf is where your current DNS settings are stored.

    What exactly is your concern with DNS? Are you having trouble with your ISP's DNS servers not responding?

    I strongly suggest NOT using OpenDNS.
  5. jobeard

    jobeard TS Ambassador Posts: 8,945   +584

    Can you qualify that recommendation please. There are several good reasons for
    using it, including avoiding the DNS poisoning threat.

    see Computerworld article
Topic Status:
Not open for further replies.

Similar Topics

Create an account or login to comment

You need to be a member in order to leave a comment
TechSpot Members
Login or sign up for free,
it takes about 30 seconds.
You may also...

Get complete access to the TechSpot community. Join thousands of technology enthusiasts that contribute and share knowledge in our forum. Get a private inbox, upload your own photo gallery and more.