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255.255.255.255 subnet

Discussion in 'Networking Issues' started by mooseboy, May 9, 2005.

  1. mooseboy

    mooseboy Network Guru Member

    Hi,
    I live in a managed block of flats with internet connection via an ethernet port in each flat.

    I've got a WRT54G wirless router and i need to set the subnet to 255.255.255.255 which apparently the llinksys router does not support.

    So is there a firmware i can install to support that subnet, or alternatively is there a work around i can use. Linksys tech support mentioned somthing about static routing.

    Any help will be greatfully appreciated
     
  2. Guyfromhe

    Guyfromhe Network Guru Member

    a subnet of 255.255.255.255 can't have any computer ips in it, you can't do that on a network, who told you to set this subnet and why are you trying to set it?
     
  3. mooseboy

    mooseboy Network Guru Member

    They are the setting that my laptop (mac os X 10.4) gets via DHCP, and also the settings the router gets from dhcp.

    From what i can understand the subnet of 255.255.255.255 will allow for just one ip address.

    Internet connection sharing works from PC to mac and mac to PC, just not Router to PC and Mac. :(
     
  4. Guyfromhe

    Guyfromhe Network Guru Member

    via dhcp from your isp?
    try .254 see if that works, if no try .252
     
  5. mooseboy

    mooseboy Network Guru Member

    ok. Here goes........
     
  6. Guyfromhe

    Guyfromhe Network Guru Member

    oops... ok where goes?
     
  7. mooseboy

    mooseboy Network Guru Member

    Nope, neither liked as then complains that gateway and dns are on different networks.

    :(

    It's not an ISP as such i'm using - it's managed block of flats with ethernet ports in room already, so i suspect that there may be router involvement already.
     
  8. TazUk

    TazUk Network Guru Member

    You can't have a subnet for a single address as it would no longer be a sub network but rather a host ;) The smallest subnet is 255.255.255.252, which allows for two useable IP's plus the usual broadcast and network IP's.
     
  9. mooseboy

    mooseboy Network Guru Member

    My head hurts.

    All i want to do is for me and my flatmate to be able to use both of our computers from one internet connection.

    If Mac OS X and Windows XP can do it, then i'd certainly expect a bl**dy wireless router to do it.

    Linksys technical support have already told me that it's not officially supported, so i asked in the hope that someone would be able to offer a quick dose of enlightenment. I'm not averse to alternate firmware if neccessary.
     
  10. Guyfromhe

    Guyfromhe Network Guru Member

    just set the subnet to 255.255.255.0 and forget about it :)
    alternate firmware won't work around the tcp/ip spc :p
     
  11. mooseboy

    mooseboy Network Guru Member

    If i do that, then it doesn't work. That's the whole point of this.

    Tech support agent at linksys went through settings aquired via dhcp from pc and the moment i got to the subnet of 255.255.255.255 he stopped me and told me that a subnet of 255.255.255.255 was not supported on that model.
     
  12. Guyfromhe

    Guyfromhe Network Guru Member

    that should be working you need to find out why thats not working, setting it to 255.255.255.255 just breaks things... how exactly do you have it wired?
     
  13. mooseboy

    mooseboy Network Guru Member

    Right

    I've got a network point in the flat which is connected to the wireless router, and then the laptop is connected to the router via wireless.

    If i connect the laptop to the network point i get the following results via DHCP.

    ip Address xx.yy.89.113
    Subnet Mask: 255.255.255.255
    Router: xx.yy.89.1

    xx is the same for ip address and router
    yy is the same for ip address and router.

    When the router is connected to the point in the wall, the status page on the router gives the following.

    Router name wrt65g
    domain name: wp.cust.vaioni.com
    ip.address - as above
    subnet mask -as above
    default gateway - as router above
    dns1 - as above
    mtu - same as

    Thanks for trying to help out here.
     
  14. Guyfromhe

    Guyfromhe Network Guru Member

    is that dsl/pppoe or is that cable/direct connection?
     
  15. mooseboy

    mooseboy Network Guru Member

    I have no idea, how do i tell ?
     
  16. Guyfromhe

    Guyfromhe Network Guru Member

    are you connected as soon as you pkug any computer in or do you need to enter a username/password?
     
  17. mooseboy

    mooseboy Network Guru Member

    Plug in, leave a few moments to get ip address, then happily surf.

    Router gets ip address too, but just won't flippin connect.

    Tried buffalo router today as well - same thing :(
     
  18. windsurfer

    windsurfer Network Guru Member

    You could always connect the XP machine to the wall connection. Then purchase another Lan card for that machine. Use Internet Connection Sharing to plug in the second machine.

    They may need to be on different subnets but other than that it whould work.

    XP can be a router for you to another subnet.
     
  19. mooseboy

    mooseboy Network Guru Member

    Yeah, that's the backup plan. Interesting how the mac will painlessly share the connection over wifi, wheras windows refuses.

    The ultimate solution will be to get a mac mini in the lounge to act as a wirelss router. Bit of overkill, although we'll get a free cd and dvd player into the bargain ;)
     

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