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Thread: Design help on IP configuration/subnetting on DD-WRT

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    Design help on IP configuration/subnetting on DD-WRT

    Hi, I have this network on my site that is in operation, it currently has an internet connection but if you view the diagram you will that it will have a further 3. Well in fact it already has just gained another but its not configured correctly.

    This network is mainly for the internet but bridging of the network would be useful so that all client's (PC's) are seen over the network if possible. Though to be honest just getting the further network connections working and what IP's the WRT54(g) (gs) (gl) should be. Installed with DD-WRT v24.

    So I want help in how the IP's should be configured, should the subnets be changed, which I don't fully understand.

    The number of WRT router's is because the network is spread out and in different buildings. Also the directional antenna's are installed because the distances are quite large and a omni antenna just wouldn't reach.

    Believe it or not the ping's are fairly low at around 50 - 90ms.

    Starting from the main internet connection in the top left corner to which it connects to a switch to supply the server and local PC's.

    What is the best way to design this network from the first router outwards (IP's/subnets).

    I have idea's but I think they are too simple so can the other DSL links contribute to the bandwidth or not. The extra DSL links have been brought in as a main for the building it provides but with the existing link as a back up.

    To make this clear I haven't done this I am trying to readress the mess the IP's are in at the moment and everythings is on 192.168.1.etc, so for the user's the IP's could run out.

    Looking into it a little WDS should play a part in this I think.

    Thanks for any help.



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    Last edited by riding moon; 20-12-2011 at 08:47 PM.

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    Jay
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    Re: Design help on IP configuration/subnetting on DD-WRT

    I assume this is a business setup, can you get fiber runs put down to replace the wireless setup? I assume you are using /24 at each site but how are you routing between subnets?

    You can use policy based routing using cisco routers but its not really going to be a massive help to you here I dont think

    Looking at your diagram I doubt you will run out of IPs even on a single class C subnet, you get 254 usable IPs (0 and 255 can't be used with Class C / 24)

    If it where me I would get a multimode fiber run to each building, get either a cisco router or a L3 switch, create 1 vlan for each office give it its own basic subnet (class c subnet for each site is fine) and then use policy based routing to allow for fail over for the ADSL or even forcing subnets down different ADSL pipes.
    Last edited by Jay; 20-12-2011 at 08:47 PM.
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    Re: Design help on IP configuration/subnetting on DD-WRT

    It's a welfare setup, UK joint forces. We haven't got anyone with enough knowledge to do this justice but we thought about fibre and we binned the idea.

    I already don't know what you are getting at and everything is as it's depicted apart from the 2 extra DSL connections that are coming live soon.

    I literally don't know how to use subnets but I think they should be used on this.

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    Jay
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    Re: Design help on IP configuration/subnetting on DD-WRT

    If you split it into subnets you need to be able to route between them.

    PCs on 192.168.1.0 255.255.255.0 can not see PCs on 192.168.2.0 255.255.255.0

    you could use

    172.16.0.0 255.255.0.0

    172.16.1.0 255.255.0.0

    172.16.2.0 255.255.0.0
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