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Solved: Multi Router Configuration

Discussion in 'Networking' started by severedsolo, Nov 10, 2009.

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  1. severedsolo

    severedsolo Thread Starter

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    Ok quick question, i currently have 2 Dlink DSL 2640R's networked together and set up correctly, the Master router is assigning DCHP addresses and the secondary is forwarding to the relevant computer thats connected to it.

    I have two PC's both connected to the secondary router, which are able to network together and use the master routers internet,

    However, my girlfriend is buying a new laptop next week, and wants to be able to stream music from one of my PC's to her Laptop while connected to the Master router (so she isnt affected by any lags due to networking happening between my two pc's i regularly switch files between them, hence the second router)

    so 2 questions:
    Firstly, am i right in my above statement that if My 2 pc's are transferring via router number 2 router number 1 will serve her with no overlap between the 2?

    and Secondly, DCHP is off on the 2nd router, and as far as i can see, the main router see's my pc's and the 2nd router is invisible, so am i right in thinking that her PC will be able to see both my PC's on the 2nd router? or will she just see router number 2? (i read somewhere that some routers see all clients connected to the 2nd router as one IP address and the 2nd router sorts it out when it gets there)
     
  2. alphanumeric

    alphanumeric

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    If you have DHCP turned off on the second router and have it connected LAN jack to LAN jack with the first router it's working as just a switch. In that instance the first router sees each PC with it's own IP address. If file and printer sharing is setup correctly the laptop will see all the other PC's on the LAN side.
    If you had left DHCP enabled and connected the first routers LAN jack to the WAN Jack on the second router you would be double NATing and the first router would see all clients connected to the 2nd router as one IP address.
    Unless you are running out of LAN jacks on the first Router I see no need to use the second router as an additional switch.
     
  3. JohnWill

    JohnWill Retired Moderator

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    If you configure the network as below, you'll have one network and access from either router will work to machines on the other one.



    Connecting two (or more) SOHO broadband routers together.

    Note: The "primary" router can be an actual router, a software gateway like Microsoft Internet Connection Sharing, or a server connection that has the capability to supply more than one IP address using DHCP server capability. No changes are made to the primary "router" configuration.

    Configure the IP address of the secondary router(s) to be in the same subnet as the primary router, but out of the range of the DHCP server in the primary router. For instance DHCP server addresses 192.168.0.2 through 192.168.0.100, I'd assign the secondary router 192.168.0.254 as it's IP address, 192.168.0.253 for another router, etc.

    Note: Do this first, as you will have to reboot the computer to connect to the router again for the remaining changes.

    Disable the DHCP server in the secondary router.

    Setup the wireless section just the way you would if it was the primary router, channels, encryption, etc.

    Connect from the primary router's LAN port to one of the LAN ports on the secondary router. If there is no uplink port and neither of the routers have auto-sensing ports, use a cross-over cable. Leave the WAN port unconnected!

    This procedure bypasses the routing function (NAT layer) and configures the router as a switch (or wireless access point for wireless routers).

    For reference, here's a link to a Typical example config using a Netgear router
     
  4. severedsolo

    severedsolo Thread Starter

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    thank you, all i needed to know, DCHP is off on router number 2, so it should all work fine,

    the 2nd router is mainly to facilitate an extended wireless range (i have an old house with thick walls, and a poor wireless aerial on the router, not a good combination) and the girlfriend likes checking emails in bed etc. as well as what i percieved as possibly a slight gain in network performance between desktop 1 and 2, if its set up as ill show below but if i understand you correctly this wont be the case as the main router will still handle everything?

    the way it will be configured:

    Internet>Primary Router (DCHP enabled) > Laptop+2nd Router (DCHP off) >PC1+2
     
  5. JohnWill

    JohnWill Retired Moderator

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    That should work fine if you use my configuration as posted.
     
  6. alphanumeric

    alphanumeric

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    What he said. :D
     
  7. severedsolo

    severedsolo Thread Starter

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    ok thank you, i will mark as solved
     
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