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Two Routers in series

By TristanM ยท 11 replies
Aug 2, 2008
  1. I have two D-Link DIR-655 XTreme-N Gigabit Wireless Routers. Pretend, for my explanation, that there is no wireless activity, because that's not where the problem is.

    My cable modem is downstairs, connected to the first Router (I'll call it "Router A").
    Router A is connected to a few systems, and the router upstairs ("Router B").
    Router B is connected to a few systems.
    No systems upstairs can connect to the intenet, I believe because of a communication error between the two routers. Internet works fine downstairs.

    So to summarize Router A can find and access the internet, but Router B, connecting through Router A cannot. I thought that the upstairs router would be able to access through another router the same as any other connection, but it can't for some reason.

    I want to find out how to run these two routers in series so that I can have mulitple connections in each end of the house. Can anyone give me some insight into how to set this up?
  2. raybay

    raybay TS Evangelist Posts: 6,908   +10

    Each of your routers need to be setup individually, and not through each other.
    Once setup, plug the one router into the other. You should have no problems.
    But your system would be happier with a switch or even a hub.
    Are Router A and B the same brand? When each is used alone, do you get the same readings? Do you have VPN? or other security that could be blocking the second router out?
  3. jobeard

    jobeard TS Ambassador Posts: 12,754   +1,490

    the easy way is to take one LAN port from A and connect to a LAN port on B, ignoring the WAN port on the B router.

    FIRST however, disconnect to two routers. Using any system connected to B,
    access the router's config page. Now disable DHCP and save the settings.

    Connect the two routers

    All systems should have addresses which are the same in the first three positions,
    eg 192.168.1.x

    You're good to go if all systems can do this
    run->cmd /k ping www.google.com
  4. OasisDolphin

    OasisDolphin TS Rookie

    It is possible, see
    www dot grc dot com/nat/nat dot htm
    www dot grc dot com/nat/nats dot htm

    Pitfalls - NAT and DHCP...

    What make, model code AND firmware versions are the routers?
  5. TristanM

    TristanM TS Rookie Topic Starter

    Both routers are identical. Both routers, when connected to the modem directly, do work. But I just can't make them work in series.

    You want me to try attachin the LAN port from A to a LAN port on B? I will try that as soon as I get a chance. And I will reconfigure the assigned IPs to all begin with the same 3 codes

    Thank you very much for the link. I'm reading through it now.
    Make: D-Link
    Model: DIR-655 (XTreme N Gigabit)
    Firmware: 1.02, 2006/10/13
    I think there is a newer firmware.

    I will try all of these solutions as soon as I get a chance. I should be able to in less than 2 hours. I`ll post once I`ve tried them all
  6. OasisDolphin

    OasisDolphin TS Rookie

    Latest FW for DIR-655 is
    1.11 at USA site 18Dec2007
    1.11EUb02 at UK/ Europe 11Jun2008
  7. jobeard

    jobeard TS Ambassador Posts: 12,754   +1,490

    YES and this is NOT what was shown in the sites quoted above BY DESIGN.
    This solution is the SIMPLE choice with least complications. The B-router will be
    performing as a SWITCH (not a router) and the A-router will control everything with
    the DHCP service from A.
    Yes and now.. You don't configure it, you let A-router DHCP do that work
    and the identical xxx.yyy.zzz.? is just confirmation that it is all on the same subnet.

    The sitations by OasisDolphin are good stuff but all the A systems would be separate from the B systems and file/print sharing becomes more difficult -- which is why my suggestion is connect LAN-2-LAN.
  8. TristanM

    TristanM TS Rookie Topic Starter

    What was suggestedin the link supplied by oasisdolphin didn't do the trick. But we may have encountered a new problem with Router A, so we are working on that. I will try connecting them LAN-2-LAN shortly.
  9. TristanM

    TristanM TS Rookie Topic Starter

    Hopefully this helps a bit...


    This is Tristan's Roommate. Here is a diagram of our network.
    Still have to try the lan to lan thing, but yea.


    Sorry for the link, but the thing wont let me clip, because I only have 3 posts.
  10. TristanM

    TristanM TS Rookie Topic Starter

    Also may just go out and buy a hub - Roommate.
  11. jobeard

    jobeard TS Ambassador Posts: 12,754   +1,490

    Good drawing :)

    Do the LAN-LAn and everything will work. You may have issues with the B-connected
    Xbox due to port-forwarding -- but we will see :)

    If you need extra slots for devices, buy a SWITCH, not a hub -- better network performance :)
  12. tipstir

    tipstir TS Ambassador Posts: 2,842   +193

    Current firmware is 1.11 stable they just release 1.20 but it has issues. 1.20b was release to fix those issues, but I recommend staying with 1.11 for now.

    I have this router myself, but you can't use it as a WDS on the second one. Buy a switch not a HUB. Connect the distance you want from the switch to the other DIR-655 to use it as wireless access point. What DLINK wanted DIR-655 owners to do was to go out and buy DAP-1522 which is WDS (100%) doesn't need to be used with any switch it can run on it's own using wireless connection. It can make any wired device wireless. It has 4 ports and doesn't have any ANT on its all built-in.

    A=DIR-655 is your DHCP/NAT
    B=DIR-655 has DHCP and NAT disabled to use as Wireless Access point through a wired Switch.

    May setup in my network closet. (DIR-655 (top) - 8-port prosafe 96KB un-managed switch (middle)
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