XP network problem

Discussion in 'NZ Computing' started by Reg, May 27, 2007.

  1. Reg

    Reg Guest

    I have two XP computers in a network through a router.
    Their ipconfog settings are:
    IP Address 10.0.0.8
    subnet Mask 255.0.0.0
    Default gateway 10.0.0.2

    IP Address 10.0.0.7
    subnet Mask 255.0.0.0
    Default gateway 10.0.0.1

    The first computer gets on to the internet ok.

    My problem is that the second computer with IP address 10.0.0.7 after
    working ok no longer accesses the internet.
    It exchanges files ok with the first computer.

    I have been through the XP troubleshooter without fixing it.
    I have tried dsiabling the firewall on the second computer but that
    made no difference.

    In as much as the second comoputer was working ok it must be something
    I have done. I was messing about with the firewall at one stage but I
    do not know exactly when the problem arose because I do not use the
    second computer to regularly access the internet.

    I would be grateful for any suggestions as to how I go about fixing
    this.

    Thanks
    Reg
     
    Reg, May 27, 2007
    #1
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  2. Reg

    Reg Guest

    On Mon, 28 May 2007 09:26:01 +1200, Reg <> wrote:

    Sorry - fixed it myself - obvious when I looked at my post.
    Default gateway needed to be same onj both computers
    10.0.0.2
     
    Reg, May 27, 2007
    #2
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  3. Reg

    Kent Smith Guest

    Reg wrote:
    > On Mon, 28 May 2007 09:26:01 +1200, Reg <> wrote:
    >
    > Sorry - fixed it myself - obvious when I looked at my post.
    > Default gateway needed to be same onj both computers
    > 10.0.0.2


    > subnet Mask 255.0.0.0


    Why such a big network for 2 pcs? :)


    -KENT
     
    Kent Smith, May 27, 2007
    #3
  4. Reg

    Reg Guest

    On Mon, 28 May 2007 09:47:12 +1200, "Kent Smith"
    <> wrote:

    >Reg wrote:
    >> On Mon, 28 May 2007 09:26:01 +1200, Reg <> wrote:
    >>
    >> Sorry - fixed it myself - obvious when I looked at my post.
    >> Default gateway needed to be same onj both computers
    >> 10.0.0.2

    >
    >> subnet Mask 255.0.0.0

    >
    >Why such a big network for 2 pcs? :)
    >
    >
    >-KENT
    >


    Possibly because I had only a vague understanding as to what a subnet
    mask is before googling it to see what you were talking about. Now I
    have a confused vague understanding.

    Thank you for getting me thinking about this :)

    I now understand the left hand bits in the mask need to be set to 1
    and for each bit set the number of computers possible on the subnet
    doubles.
    I also see that 255.0.0.0 is the default setting for the mask where
    the network range is 10.0.0.0 - 10.255.255.255

    I have two questions:
    With just two computers could I have set the mask to 128.0.0.0 rather
    than using the default ?

    Why have my computers got their IP addresses set to 10.0.0.7 and
    10.0.0.8 rather than 10.0.0.1 and 10.0.0.2 ?


    Reg
     
    Reg, May 28, 2007
    #4
  5. Reg

    El Chippy Guest

    On Mon, 28 May 2007 13:42:25 +1200, Reg wrote:

    > On Mon, 28 May 2007 09:47:12 +1200, "Kent Smith"
    > <> wrote:
    >
    >>Reg wrote:
    >>> On Mon, 28 May 2007 09:26:01 +1200, Reg <> wrote:
    >>>
    >>> Sorry - fixed it myself - obvious when I looked at my post.
    >>> Default gateway needed to be same onj both computers
    >>> 10.0.0.2

    >>
    >>> subnet Mask 255.0.0.0

    >>
    >>Why such a big network for 2 pcs? :)
    >>
    >>
    >>-KENT
    >>

    >
    > Possibly because I had only a vague understanding as to what a subnet
    > mask is before googling it to see what you were talking about. Now I
    > have a confused vague understanding.
    >
    > Thank you for getting me thinking about this :)
    >
    > I now understand the left hand bits in the mask need to be set to 1
    > and for each bit set the number of computers possible on the subnet
    > doubles.
    > I also see that 255.0.0.0 is the default setting for the mask where
    > the network range is 10.0.0.0 - 10.255.255.255
    >
    > I have two questions:
    > With just two computers could I have set the mask to 128.0.0.0 rather
    > than using the default ?


    that would be an even larger network, half the internet in fact. for a
    small network 255.255.255.0 would be a good network mask,
    0.0.0.0 is the netmask for the whole internet,
    255.255.255.255 is the mask for a single host (computer/router)

    http://en.wikipedia.org/wiki/Subnetwork for a bit more info

    >
    > Why have my computers got their IP addresses set to 10.0.0.7 and
    > 10.0.0.8 rather than 10.0.0.1 and 10.0.0.2 ?


    10.0.0.2 is the routers IP address.
     
    El Chippy, May 28, 2007
    #5
  6. Reg

    Shane Guest

    Reg wrote:

    > On Mon, 28 May 2007 09:47:12 +1200, "Kent Smith"
    > <> wrote:
    >
    >>Reg wrote:
    >>> On Mon, 28 May 2007 09:26:01 +1200, Reg <> wrote:
    >>>
    >>> Sorry - fixed it myself - obvious when I looked at my post.
    >>> Default gateway needed to be same onj both computers
    >>> 10.0.0.2

    >>
    >>> subnet Mask 255.0.0.0

    >>
    >>Why such a big network for 2 pcs? :)
    >>
    >>
    >>-KENT
    >>

    >
    > Possibly because I had only a vague understanding as to what a subnet
    > mask is before googling it to see what you were talking about. Now I
    > have a confused vague understanding.
    >
    > Thank you for getting me thinking about this :)
    >
    > I now understand the left hand bits in the mask need to be set to 1
    > and for each bit set the number of computers possible on the subnet
    > doubles.


    erm. For each bit set to a one on the left hand side, the number of
    possible NETWORKS(aka subnets) doubles, and the number of possible machines
    on each network HALVES

    And thats a rough count. To further confuse you the number of nodes
    (machines/network devices, w/ever) in each possible network is the decimal
    value computed from the bits on the right hand side less 2. (Reserved for
    the network address (all zero's) and the broadcast address(all ones)


    > I also see that 255.0.0.0 is the default setting for the mask where
    > the network range is 10.0.0.0 - 10.255.255.255
    >
    > I have two questions:
    > With just two computers could I have set the mask to 128.0.0.0 rather
    > than using the default ?
    >


    192.168.0.0/30 will give you 2 machines, and a shitload of possible subnets.
    (256 * 254)
    Although for you I'd recommend 192.168.0.0/24 (Its a default)
    It gives you a possible 254 nodes
    or stick with the 10.0.0.0/8 (Its another default)
    (256*256*256-2) possible nodes

    But
    > Why have my computers got their IP addresses set to 10.0.0.7 and
    > 10.0.0.8 rather than 10.0.0.1 and 10.0.0.2 ?
    >
    >


    The three private networks are:
    10.0.0.0/8 (10.0.0.0 to 10.255.255.255)
    172.16.0.0/16 (172.16.0.0 to 172.31.255.255)
    192.168.0.0/24 (192.168.0.0 to 192.168.255.255)

    Most people use the 10 or the 192 networks.

    It really doesnt matter (for small networks), whatever you are comfortable
    with.


    > Reg


    meh, if it aint broke dont fix it


    --
    Math problems? Call 1-800-[(10x)(13i)2]-[sin(xy)/2.362x].
     
    Shane, May 28, 2007
    #6
  7. Reg

    Dave Taylor Guest

    "Kent Smith" <> wrote in news:f3cu91$1rdh$1
    @si05.rsvl.unisys.com:

    >> subnet Mask 255.0.0.0

    >
    > Why such a big network for 2 pcs? :)
    >


    Typical Telecom ADSL router setup

    --
    Ciao, Dave
     
    Dave Taylor, May 28, 2007
    #7
  8. Reg

    Reg Guest

    OK OK - I submit !!
     
    Reg, May 29, 2007
    #8
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