LAN to LAN + UTP cable?

Discussion in 'Network Routers' started by s|b, Oct 27, 2014.

  1. s|b

    s|b Guest

    I want to connect a Linksys router to an SMC router (primary; connected
    to a cablemodem), LAN to LAN. Is it possible to connect the second
    router (Linksys) with a terminal, using an UTP cable? (The terminal
    needs an Internet connection.)
    s|b, Oct 27, 2014
    1. Advertisements

  2. s|b

    VanguardLH Guest

    Used to be routers had a port marked "Uplink". When using the uplink
    port, some routers usurp one of the other LAN ports (i.e., when using
    the uplink port, one of the LAN ports becomes unusable). Nowadays some
    routers let you use any LAN-side port to uplink to another router; that
    is, you won't find a LAN-side port marked "uplink".

    You'd have a setup like (except replace the WAP with the cable modem):

    Whether each router (via its switch) created its own subnet or was
    transparent (so your whole intranet was one subnet) depended on how you
    configured each sub-router in the tree. You'd have CAT5 for each device
    going to the router, even between the routers to uplink one to another.
    Since you mentioned "wire" then you're not asking about how to chain
    together wireless routers.

    "Linksys router" and "SMC router" don't tell anyone which models you
    have to know how to configure them for router chaining. Until those
    details are known, only you know the capabilities of your routers since
    only you know what their manuals say (which is what we would be doing in
    your place, anyway). Read the SMC router's manual to see if a port is
    dedicated for uplinking from another (Linksys) router or if any of its
    LAN-side ports can be used for uplinking.
    VanguardLH, Oct 27, 2014
    1. Advertisements

  3. s|b

    s|b Guest

    I was hoping for a "yes" or "no" answer. ;-)
    AFAIK there is no uplinking. As for the routers:

    SMCWBR14-G2 (


    E2000 met DD-WRT firmware (



    If it's too much trouble I'm simply going for the LAN to WAN solution...
    s|b, Oct 27, 2014
  4. s|b

    Char Jackson Guest

    If you just need more Ethernet ports, use a switch.

    If you don't have a switch, but you do have a router, then yes you can
    connect them in such a way that you're only using the switch in the second

    Log into the second router and disable DHCP. Optionally, use this
    opportunity to configure a static LAN IP in the second router, making sure
    it's an address outside of the DHCP scope of the first router. Finally,
    connect the two devices LAN to LAN. Leave the second unit's WAN port unused.
    Char Jackson, Oct 27, 2014
  5. s|b

    VanguardLH Guest

    Those are wireless routers with wired ports. For some wireless routers,
    you can use bridging; however, I didn't see any mention of it in the
    online Linksys manual (and SMC doesn't provide an online copy of the
    manual to see what that router can do). SMC had this FAQ article:

    They mention a slightly different model so the SMC model that you have
    might not work. You'll have to check if your wireless SMC supports WDS
    (Wireless Distribution System). See:

    I saw no mention of WDS in the Linksys manual. If you're going to just
    hook the routers together using a CAT5 cable, run the WAN port from
    sub-router to a LAN port in the other. If you go LAN port to LAN port,
    you have to make one router subservient, like disabling its DHCP server
    (unless every host on that router is using static IP addressing). See:

    Sorry, I have no experience with substituting the firmware of a router
    with the 3rd party versions, like DD-WRT.
    VanguardLH, Oct 28, 2014
  6. s|b

    Char Jackson Guest

    I'm under the assumption that he/she only needs one or more additional
    Ethernet ports, so it's irrelevant that they have wireless capabilities,
    unless perhaps it comes with a recommendation to disable the wireless
    Bridges are Layer 2; Switches are Layer 2. Switches are little more than
    N-way bridges. Also, NAT routers (wired or wireless) that include a built in
    switch can all be used as a switch, simply by disabling certain functions
    (DHCP and WiFi, for example), and ignoring certain other features (the
    router function, for example).

    You shouldn't expect the manufacturer to talk about using their product with
    most of its features disabled.

    WDS is a wireless protocol, which is completely irrelevant to the current

    Bad idea, unless he/she wants to create two distinct subnets, with one
    reachable from the other but not vice versa. If he/she only needs one or
    more additional Ethernet ports, they should be connected LAN port to LAN
    I covered that in a previous post.
    I have over a decade of experience with dd-wrt, but I don't see it as
    relevant to the current discussion. Any NAT router, wired or wireless, can
    be used as a switch (or as an access point, for that matter).
    Char Jackson, Oct 28, 2014
  7. s|b

    VanguardLH Guest

    Then you are unaware of bridging wireless routers despite the article I
    mentioned. He could do it with wire. He could do it with wireless.
    But not if the routers don't support either.
    When haven't NAT routers included a switch? I already mentioned
    configuring the router, like disabling DHCP (which is irrelevant,
    anyway, if static IP addresses are used for the intranet hosts), to
    devolve a router to a switch.
    How about a manufacturer talking about the features they *do* include?
    Linksys has an online manual. They aren't hiding features so if a
    feature isn't mentioned then it isn't there. Just how does a
    manufacture hide in their manual a feature when the manual isn't
    available? Perhaps you have tons of manuals laying around for various
    brands and model of networking gear but I rely on reviewing online
    manuals for what I don't own.
    Not if the OP wanted to use wireless to bridge the routers. Just
    because the OP mentioned wire doesn't mean he knows about bridging.
    Maybe that's as much as he knew: somehow wire them together.
    Whether you can drill into subnets depends on the security functions, if
    even present, to isolate one subnet from another. We're talking about
    consumer-grade gear here, not rack-mounted enterprise-level routers.

    In fact, subnetting can benefit the network by isolating traffic. If
    one subnet is used for network testing then perhaps you don't want all
    that traffic on the other subnets. Subnets do not necessarily block
    access by the hosts on a subnet from going through the router to the
    other subnet and then to the Internet. Many corporate networks are
    designed just that way.
    The Linksys article was more detailed than your summarization. Sorry,
    but I don't recognize your clairvoyence in knowing the expertise of the
    OP. What, you're so vain that you cannot stand someone possibly
    overlapping your advice? Go get your virtual gun and shoot me then.
    None of the 3rd party firmware updates can modify or add to the feature
    set of a router? Then what's the point of installing them?
    VanguardLH, Oct 28, 2014
  8. s|b

    s|b Guest

    I found this article which describes what you say:

    - disable DHCP
    - static IP

    The SMC router is, so I was planning on making the Linksys
    router and then access the SMC and change de Start IP
    s|b, Oct 28, 2014
  9. s|b

    s|b Guest

    I just noticed that VanguardLH found this link as well. I found it very
    informative. I also watched some instruction videos on YouTube, but it
    wasn't clear to me if I could connect a UTP-cable to the secondary
    router. Now I know it's possible.

    Wireless is also needed since I want a stronger wireless signal on the
    ground floor (and outside). I want to install a WiFi cam inside and
    another one outside. The primary router is situated in the attic and the
    signal isn't that strong.
    s|b, Oct 28, 2014
  10. s|b

    Char Jackson Guest

    Perfect! That should do it.
    Char Jackson, Oct 28, 2014
  11. s|b

    Char Jackson Guest

    Well, I'm aware of wireless bridges, wireless routers, wired routers, etc.
    I'm also aware that any Ethernet switch can be used as a bridge, including
    every Ethernet switch included as part of a "router". Have I missed anything
    so far?
    Every router that includes a switch has no choice but to support bridging.
    Bridging is essentially a subset of switching.
    Since the advent of NAT routers, there have been models that don't include a
    switch. My first router was that type, a Linksys BEFSR11, the little brother
    to the BEFSR41, which had a 4-port switch. Switchless routers have been
    available ever since.
    Yeah, so did I, but I wouldn't say that disabling DHCP is optional.
    Come on, even you must know that there's just a tiny bit of burden on the
    consumer. The manufacturer isn't going to lay it all out for you. Linksys
    isn't going to market a wireless router with these bullet points:
    -Can be used as a wireless bridge!
    -Can be used as an access point!
    -Can be used as a DHCP server!
    and so on.

    No, they would rather sell separate devices, at least for the bridging and
    AP functions, even though those devices cost significantly more while doing
    significantly less.

    Obviously not true. It only means it isn't in the manual. Whether it's in
    the product or not is a completely different question.
    Dude, you have a helluva reach. :) Great job making things up to justify
    yourself. I'm seriously impressed.

    Reminder: the OP asked about connecting a couple of routers to gain one or
    more additional Ethernet ports. Sometimes you get so long-winded that you
    clearly forget where you started. For what the OP asked about, 3rd party
    firmware isn't required. I'm surprised to see that you're surprised by that.
    Char Jackson, Oct 29, 2014
  12. s|b

    s|b Guest

    Tnx, I'll try the set-up this weekend or the next.
    s|b, Oct 30, 2014
  13. s|b

    David Guest

    On Mon, 27 Oct 2014 21:28:41 -0500, Char Jackson wrote:

    For a router to be used as a Access Point you have AFAIK to disable the NAT
    routing functionality so that the router runs in "pass through" mode.

    i.e. all packets not addressed specifically to the router get passed
    through unchanged just like a dumb hub (possibly get filtered to not pass
    through to any device elsewhere on the network as in a smart switch).

    Are you saying that this function is accessible on ALL consumer grade NAT

    If so, are you saying that it is available as an option in the GUI, or are
    you saying that this may be a hidden option?

    I am specifically interested because of the Buffalo WHR-1166D AirStation
    AC1200 which has an unusual configuration of four 10/100 LAN ports and a
    Gigabit WAN port.

    This is surprisingly cheaper than APs with a Gigabit port, so it would be
    good to be able to use it as an AP and ignore all the routing functions.


    Dave R
    David, Nov 2, 2014
  14. s|b

    Char Jackson Guest

    True, and the easiest way to disable NAT is to simply ignore the WAN port
    and leave it unused. If you really need that extra port, you can install 3rd
    party firmware (dd-wrt is recommended, if your router supports it) and
    assign the WAN port to the LAN.
    An unmanaged switch always acts like a switch, never like a hub. The switch
    built into a consumer grade NAT router is always an unmanaged switch.
    Yes, with some basic configuration steps. Here's a starting point:
    I've never seen it in a GUI, that I know of. That would make it hard for a
    manufacturer to sell a (higher priced) access point as a separate unit. At
    the same time, I don't consider it a hidden option. It's just taking a
    device that can do multiple things and using it for a subset of those
    As an access point, the single Gig port obviously won't be of much use, but
    with 3rd party firmware (if applicable) you can at least assign it to the
    LAN and not lose it completely.
    Char Jackson, Nov 2, 2014
  15. s|b

    David Guest

    Well, O.K. - all I can find via Google is methods for using the LAN ports,
    and ignoring the WAN port.

    Specifically for the Buffalo WHR-1166D AirStation AC1200:

    As an Access Point the Gigabit port is key, because you can then use the
    wireless side at speeds above 100 Mbits/sec (allegedly) linked into a
    Gigabit LAN. I do have doubts about achieving speeds over 100 Meg but I
    also have doubts about getting anywhere near 100 Meg with lower rated
    wireless protocols.

    [Note that I currently have 150 mbits/sec cable, and several Gigabit PCs
    on a Gigabit switch and router, so Gigabit speeds to the AP are very

    Effectively you are buying a single port Gigabit wireless AP (oh, and for
    some reason someone tacked a 4 port 100 Meg hub on the side).

    So the only solution which would work for me is converting the Gigabit
    port into a LAN port so I can have a wired Gigabit LAN connection on my
    wireless AP.

    The Buffalo WHR-1166D AirStation AC1200 does not currently seem to be
    listed in the main DD-WRT router database.

    It isn't listed in "Supported Devices" either although the 1166DHP is
    (which is reported to have 4 Gigabit LAN ports and one Gigabit WAN port).

    It is listed in
    with a Mediatec MT7620A and a Mediatec M7621E but incorrectly listed as
    having 4 * 10/100 LAN and 10/100 WAN.

    I did read somewhere that one of the the Mediatec chips provided 4 *
    10/100 LAN ports. Ah

    "integrated 6-port Ethernet switch (MT7530) with five 10/100 PHYs"

    Still trying to track down the WAN port - may be associated with the
    MT7612E but information on this chip is less available than for the M7620A.

    Anyway, I think the conclusion is that the only way to use the WAN port
    when converting a SOHO router to an AP is to load on third party software
    such as DD-WRT.

    Unfortunately this doesn't seem to be currently available for the router I
    am investigating.

    As you say, this is just the manufacturers screwing us all over to pay
    more for an AP than a router (and getting less functionality).


    Dave R
    David, Nov 2, 2014
  16. s|b

    RVG Guest

    Le 27/10/2014 20:27, s|b a écrit :
    Yes, that's what I've done for my home network because the router-modem
    hired by my ISP wasn't compatible (no ipv6) in wan2lan with my Linksys
    You have to change some settings in the secondary router, like assigning
    an ip on the same network (for example if your primary router is on, just set the Linksys ip to and turn off the
    DHCP on the Linksys (it will find the information on the primary
    router). The turn everything off and on again in order:
    modem-router, 2nd router, terminal(s).

    « Tous les temps sont des temps de détresse, il y a quelquefois des
    poètes. » André du Bouchet
    RVG, Nov 4, 2014
  17. s|b

    s|b Guest

    Thanks for confirming this set-up will work. I've set up the second
    router (Linksys), but I haven't connected it yet. I need another
    UTP-cable to connect the terminal too and I've been trying to get this
    crappy Wanscam JW0004 IP cam too work. Wireless and mail are simply
    impossible to get working and I've been waiting 3 days for their
    (crappy) support to react.

    (Should have told my uncle to *not* buy Chinese hardware...)
    s|b, Nov 4, 2014
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.