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Connecting 500 computers!!HOW?

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Connecting 500 computers!!HOW?

mrlon2000
guys, how do i network around 500 computers using static ip (192.168.0.x)?because we know that the maximun ip is until 192.168.0.254 with subnet of 255.255.255.0 ,is there any other way in setting up this network without using a router? changing ip will be considered if in case.thanks
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    eduardo (PT)

    You provided little information about the network you are planning, but as far as what I understood about your question, if you want to use IPv4 and if you want all of your computers to have addresses on the 192.168.0.xxx format, you'll only be able to connect 255 computers.
    If you want to connect 500 computers you'll have to use the 192.168.xxx.xxx format.

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    mrlon2000

    what IP Address should be use?(ex. xxx.xxx.xxx.xxx and what subnet? xxx.xxx.xxx.xxx) on connecting 500 computers without using a router that can see each other on "My Network Place" thanks again..

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    stress junkie

    It can't be done with IPv4 without a router. You need to use at least two IPv4 subnets, as eduardo has already said.

    The 192.168 subnet allows you to have 254 (255?) subnets with 254 host addresses in each subnet. If you change your subnet mask to something like 255.255.254.0 and change your broadcast mask accordingly then you can have one subnet. That would give you nine bits in the host address so you would have two to the ninth power minus two addresses. If your subnet was 255.255.252.0 then you would have two to the tenth power minus two addresses in one subnet. Here is more information.

    http://www.networkcomputing.com/unixworld/tutorial/001.html

    http://www.subnetmask.info/

    You could use a different protocol like NetBEUI, but I think that Microsoft is dropping support for that. You might be able to use Novell IPX/SPX. If you want the computers to be able to access the Internet then they probably have to use IP for that, at least, unless you could create a protocol switching gateway.

    BTW, you should have posted this in the Q&A forum.

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    NickNielsen Moderator

    If you set your subnet mask to 255.255.254.0, your gateway will be 192.168.0.1, your broadcast address will be 192.168.1.255, and you will have access to the remaining 508 legal IP addresses.

    Edit: Unless I've forgotten more than I think...

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    sbacheler

    Perfect response/action.

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    CharlieSpencer

    Nick's response perfect partially because it was timely.

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    Dumphrey

    for example 192.168.X.X 255.255.0.0 Here we have a 16 bit mask on the network giving 2^16-2 host addresses (65,534 addresses). A more complex method would be to use vlsm and subnet out a /23 mask.

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    russmessenger

    If you use the 172.16.0.0 you could have all the computers on one network without subnetting.

    Subnetting requires a router. And, a Class C limits you to 254 computers on a subnet.

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    wallowamichael

    I agree with others except that I would pick a mask of 255.255.240.0, which would give you usable IP addresses of 192.168.0.x through 192.168.15.254, well over 4000 addresses.<BR><BR>
    All computers can have the gateway 192.168.0.1, etc. like others have said.<BR><BR>
    This setup also gives you some flexibility on configuring your network services. All servers and printers can be in the 192.168.0.0 network. All DHCP addresses can be in the 192.168.1.0 network (and denied access to other network services). All desktops can be in the 192.168.2.0 network, and laptops on 192.168.3.0, etc. If you have users that aren't allowed on the Internet, put them in a network all to themselves and then forward their Internet traffic to nothing. If you have people without e-mail accounts, put them on a separate network number and tell the SMTP server not to accept mail from them.<BR><BR>
    There are many things you can do with too many IP addresses, and this is an easy way to do it.<BR><BR>
    One step further. When you configure your SMTP access (Internet, printing, etc) usually you put in network numbers. Don't use the general network mask that the users get, which is 255.255.240.0 (or /20), use the full class C address, 255.255.255.0. So you'd have in your SMTP list:
    Allow 192.168.0.0/24 - servers
    Deny 192.168.1.0/24 - DHCP
    Allow 192.168.2.0/24 - Desktops
    <BR><BR>
    Hope I haven't confused you even more!

    Good Luck

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    doudou.dandan

    You need to change your subnet mask i think.

    Try using 192.168.x.x /23 This would double the number of hosts you can have to 512 then after you have taken away the network address (192.168.0.0) and the broadcast 192.168.255.255)

    Not sure if this helps but i tried

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    patnamukesh

    Give us details

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    bugprobe

    Hi,
    If you just subnet the network with a mask of 255.255.128.0 will give you 512 ip addresses, 510 usable

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    cmiller5400

    You DO realize this question is over 3 years old?

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    Jellimonsta

    That subnet mask will actually give 32000+ addresses, not 512. That would be mask 255.255.254.0.

    [edit: fat fingers] :0

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    nriascos

    Ok, i know this this question is kind of old, but it does help to people like me looking for an answer. So I guess I?ll give it a shot.

    I have a very simple network of a subnet of 254 hosts; I?m running out of IP address. I want to increase the network address to double (508).

    The part I don?t understand is what happened if we also have 3 more sites, in other cities and they connect trough VPN.

    Site 1: 172.0.0.1~172.0.0.254/255.255.255.0 (running out of IP Address)
    Site 2: 172.0.1.1~172.0.1.254/255.255.255.0
    Site 3: 172.0.2.1~172.0.2.254/255.255.255.0
    Site 4: 172.0.3.1~172.0.3.254/255.255.255.0

    Note that I?m running out of IP address in just one site, in the other sites we have plenty of IPs.
    What I understand reading this post, is that I have to borrow 1 bit from the subnet mask and make my site 1: 172.0.0.1~172.0.1.254/255.255.254.0.
    I will have all the IPs that I need.

    My other problem, is that someone already use the consecutive address, so I will need to move all the sites first and change the addresses schema in order to change the site 1 subnet. Am I right?

  • +
    0 Votes

    1

    eduardo (PT)

    You provided little information about the network you are planning, but as far as what I understood about your question, if you want to use IPv4 and if you want all of your computers to have addresses on the 192.168.0.xxx format, you'll only be able to connect 255 computers.
    If you want to connect 500 computers you'll have to use the 192.168.xxx.xxx format.

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    0 Votes
    mrlon2000

    what IP Address should be use?(ex. xxx.xxx.xxx.xxx and what subnet? xxx.xxx.xxx.xxx) on connecting 500 computers without using a router that can see each other on "My Network Place" thanks again..

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    0 Votes
    stress junkie

    It can't be done with IPv4 without a router. You need to use at least two IPv4 subnets, as eduardo has already said.

    The 192.168 subnet allows you to have 254 (255?) subnets with 254 host addresses in each subnet. If you change your subnet mask to something like 255.255.254.0 and change your broadcast mask accordingly then you can have one subnet. That would give you nine bits in the host address so you would have two to the ninth power minus two addresses. If your subnet was 255.255.252.0 then you would have two to the tenth power minus two addresses in one subnet. Here is more information.

    http://www.networkcomputing.com/unixworld/tutorial/001.html

    http://www.subnetmask.info/

    You could use a different protocol like NetBEUI, but I think that Microsoft is dropping support for that. You might be able to use Novell IPX/SPX. If you want the computers to be able to access the Internet then they probably have to use IP for that, at least, unless you could create a protocol switching gateway.

    BTW, you should have posted this in the Q&A forum.

    +
    0 Votes
    NickNielsen Moderator

    If you set your subnet mask to 255.255.254.0, your gateway will be 192.168.0.1, your broadcast address will be 192.168.1.255, and you will have access to the remaining 508 legal IP addresses.

    Edit: Unless I've forgotten more than I think...

    +
    0 Votes
    sbacheler

    Perfect response/action.

    +
    0 Votes
    CharlieSpencer

    Nick's response perfect partially because it was timely.

    +
    0 Votes
    Dumphrey

    for example 192.168.X.X 255.255.0.0 Here we have a 16 bit mask on the network giving 2^16-2 host addresses (65,534 addresses). A more complex method would be to use vlsm and subnet out a /23 mask.

    +
    0 Votes
    russmessenger

    If you use the 172.16.0.0 you could have all the computers on one network without subnetting.

    Subnetting requires a router. And, a Class C limits you to 254 computers on a subnet.

    +
    0 Votes
    wallowamichael

    I agree with others except that I would pick a mask of 255.255.240.0, which would give you usable IP addresses of 192.168.0.x through 192.168.15.254, well over 4000 addresses.<BR><BR>
    All computers can have the gateway 192.168.0.1, etc. like others have said.<BR><BR>
    This setup also gives you some flexibility on configuring your network services. All servers and printers can be in the 192.168.0.0 network. All DHCP addresses can be in the 192.168.1.0 network (and denied access to other network services). All desktops can be in the 192.168.2.0 network, and laptops on 192.168.3.0, etc. If you have users that aren't allowed on the Internet, put them in a network all to themselves and then forward their Internet traffic to nothing. If you have people without e-mail accounts, put them on a separate network number and tell the SMTP server not to accept mail from them.<BR><BR>
    There are many things you can do with too many IP addresses, and this is an easy way to do it.<BR><BR>
    One step further. When you configure your SMTP access (Internet, printing, etc) usually you put in network numbers. Don't use the general network mask that the users get, which is 255.255.240.0 (or /20), use the full class C address, 255.255.255.0. So you'd have in your SMTP list:
    Allow 192.168.0.0/24 - servers
    Deny 192.168.1.0/24 - DHCP
    Allow 192.168.2.0/24 - Desktops
    <BR><BR>
    Hope I haven't confused you even more!

    Good Luck

    +
    0 Votes
    doudou.dandan

    You need to change your subnet mask i think.

    Try using 192.168.x.x /23 This would double the number of hosts you can have to 512 then after you have taken away the network address (192.168.0.0) and the broadcast 192.168.255.255)

    Not sure if this helps but i tried

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    0 Votes
    patnamukesh

    Give us details

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    0 Votes
    bugprobe

    Hi,
    If you just subnet the network with a mask of 255.255.128.0 will give you 512 ip addresses, 510 usable

    +
    0 Votes
    cmiller5400

    You DO realize this question is over 3 years old?

    +
    0 Votes
    Jellimonsta

    That subnet mask will actually give 32000+ addresses, not 512. That would be mask 255.255.254.0.

    [edit: fat fingers] :0

    +
    0 Votes
    nriascos

    Ok, i know this this question is kind of old, but it does help to people like me looking for an answer. So I guess I?ll give it a shot.

    I have a very simple network of a subnet of 254 hosts; I?m running out of IP address. I want to increase the network address to double (508).

    The part I don?t understand is what happened if we also have 3 more sites, in other cities and they connect trough VPN.

    Site 1: 172.0.0.1~172.0.0.254/255.255.255.0 (running out of IP Address)
    Site 2: 172.0.1.1~172.0.1.254/255.255.255.0
    Site 3: 172.0.2.1~172.0.2.254/255.255.255.0
    Site 4: 172.0.3.1~172.0.3.254/255.255.255.0

    Note that I?m running out of IP address in just one site, in the other sites we have plenty of IPs.
    What I understand reading this post, is that I have to borrow 1 bit from the subnet mask and make my site 1: 172.0.0.1~172.0.1.254/255.255.254.0.
    I will have all the IPs that I need.

    My other problem, is that someone already use the consecutive address, so I will need to move all the sites first and change the addresses schema in order to change the site 1 subnet. Am I right?