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    New T1 and trying to add a router.


    Hi folks,

    I am trying to help a friend out who has just had his T1 installed and activated by Verizon. I saw a post that was semi-alike to my question, but my problem might be a little simpler.

    The T1 comes through the wall to a T1 Modem. With a computer(with static IP, Default Gateway and DNS set up corresponding to the Modem's) directly connected to the modem, internet works fine. I want to add the pre-existing Linksys Wireless router to the network, but I am failing at finding a way to get traffic to pass through.

    I read all over that I may need to purchase a T1 router, or set up my current router to some other settings. I know enough to set up a DSL or Cable connection, but his T1 has me boggled!

    Thanks in advance!

    Frank
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    if what you has works fine, don't mess with it. Just install the linksys and give it an address in the same network range as the rest of the network and turn off DHCP.

    T1 -> T1 Router -> {switched network}

    Inside the {Switched Network} you'll have all your PC's and the linksys router with IP information like this:

    PC
    IP - 192.168.1.100
    mask - 255.255.255.0
    gateway - 192.168.1.1

    what you want to do is give your linksys this information
    IP - 192.168.1.2
    mask - 255.255.255.0
    gateway - 192.168.1.1
    TURN OFF DHCP!

    You basically just created a Wireless Access Point now!
    Adam TT
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    So a standard dsl/cable router should be able to handle the T1?

    If DHCP is disabled, how will the computers/printers pull an IP? Must I set up a static for every device?

    Thanks!
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    There will be two routers in there, the existing one and the linksys one you put in there. One will just be disabled of "routing" and will just act as a WAP.
    Adam TT
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    Originally Posted by AdamPI
    There will be two routers in there, the existing one and the linksys one you put in there. One will just be disabled of "routing" and will just act as a WAP.
    I hope there is no confusion, but there is only one Linksys router and then there is only 1 T1 modem.
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    Oh, I had misread your original post. The static IP (and other info) your PC has will go onto the linksys then setup your PC to automatically get IP and DNS info, LEAVE DHCP on the linksys. The linksys will connect to the modem then.

    Comments on this post

    • seack79 agrees : The Linksys router will not be a DHCP client (i.e., assign your public static IP information from the desktop into the router and change mode from dhcp or pppoe to static), but it will be a DHCP server; if that helps.
    Adam TT
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    Ok, This is what I have gathered.

    Wall cat6-->T1Modem-->Linksys(with DHCP)-->computers.

    If I read you right, this configuration does not work.

    for example( Does not work):

    T1(45.45.45.240)
    Linksys(192.168.1.1)
    Start DHCP @ 192.168.1.100
    This is true with cable/dsl settups, correct?

    If I:
    T1(45.45.45.240)
    Linksys (45.45.45.242)
    Start DHCP @ 45.45.45.243
    Should this work, or am I totally off base?
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    totally off base, the key point you need is that the linksys has TWO interface sides. One side, the WAN side will connect to the modem and will have the 45... address.

    The LAN side will be facing the PCs and such and will have the 192.168.1.1 address.

    Router (N) - 1) A device that routes TCP/IP packets between two different networks. e.g. between 45.45.45.x and 192.168.1.x. In this example the 45.45.45.x address will have routers beyond that to send TCP/IP packets on to other destination networks. This is what is collectively know as "The Internet".

    [smart-@ss] Sorry for being a smart-@ss, it's Friday and I want to go home.
    Adam TT
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    I think you are close, did you configure DNS in the lynksis router also? Also did you configure the Lynksis router to use the IP 45.45.45.240?

    Can you get to a site if you go to http://74.125.45.100/ (google)?

    Should have:
    T1 Modem(this should only have gateway IP and with most T1's only the ISP can edit anything on this)
    Lynksis: WAN IP: 45.45.45.240
    LAN: 192.168.1.1
    DHCP: 192.168.1.100-255
    Last edited by brianbak; October 30th, 2009 at 04:52 PM.
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    When i changed the Linksys' Local IP Address to 45.45.45.240, then the DHCP starts @ 45.45.45.100

    there was no way to keep the internal IPs to maintain the 192.168.1.100

    I also threw in the Static DNS to x.x.x.x and x.x.x.x

    Do I need to change the Advanced Routing Settings from Gateway to Router or from LAN & Wireless or WAN(Internet)?

    I wont be able to try anything until I go over tomorrow.

    So lets keep brainstorming!
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    It is an easy set up... do you have the model number of the router?
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    Make sure you set it to use Static IP, I think thats why youa re not finding your WAN setings.

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    Thanks so much!!!

    I forgot how much I loved screen shots!! It makes sense now.

    I confirmed some IP addresses with Verizon to make sure i have it all right. Something just came to mind though, what if I am only allowed to assign x.x.x.242-246. Each of these 242-246 are for physical devices for me to assign Static IPs individually right? From my off hand count, i have 2 desktops, 2 printers and 1 laptop to assign an IP, I'd be one short if this is how it is.

    I hope I'm not right heh.
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    Originally Posted by MystikalFrank
    Thanks so much!!!

    I forgot how much I loved screen shots!! It makes sense now.

    I confirmed some IP addresses with Verizon to make sure i have it all right. Something just came to mind though, what if I am only allowed to assign x.x.x.242-246. Each of these 242-246 are for physical devices for me to assign Static IPs individually right? From my off hand count, i have 2 desktops, 2 printers and 1 laptop to assign an IP, I'd be one short if this is how it is.

    I hope I'm not right heh.
    Depends how you want it set up, Since I love pictures:

    1. your devices would be public to the internet
    2. would need to buy a larger block of IP's
    3. Such a waste of valuable public IP's
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    well as long as the Linksys still keeps the internal network as 192.168.1.100 +, then I can put as much as I want on the network.

    Tomorrow I will try your recommendations tomorrow and let you know

    Thanks again brianbak and AdamPI

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