RE: [WinMac] Wireless Networking for PCs

From: Perbix Michael (PERBIX[at]lmsd.org)
Date: Mon Aug 14 2000 - 19:15:52 PDT

  • Next message: Leonard Rosenthol: "RE: [WinMac] Wireless Networking for PCs"

    > Is the cable modem IP static or leased through DHCP? If the latter, how do
    >
    > you keep the PC from snagging the cable modem IP instead of the Base
    > Station?
    >
    In this particular case, the IP was static. I am not sure how it would work
    via DHCP, except that if you have the Airport set up via DHCP, it will get
    it's IP from the Cable modem, I would imagine you would need to turn the
    base station on first, allow it to get the IP number, then it will answer
    DHCP broadcasts fro mthe other clients. I believe this is what I read on
    another list somewhere...however I have no ability to test that theory since
    I myself do not have a cable modem of DSL..just lil ol' dial up, but at
    least it is through our own network so I know I won't get a busy signal
    8-)..

    > I would love do to a configuration like as diagrammed below but I'm a
    > concerned that the wired DHCP clients might grab the cable modem IP
    > instead
    > of one from the Base Station's DHCP server. I'm also not certain private
    > IP
    > packets get past the cable modem to a part of the network that my
    > neighbors
    > could conceivably packet sniff but that's another matter.
    >
    I am not sure if teh cbale connection is shared liek a hub, or switched, I
    know it operates from a pool, but I do not know the specifics.

    > |-----G4 (IP from Base Station DHCP)
    > |
    > Cable modem--------Hub-----PC (IP from Base Station DHCP)
    > |
    > |-----Base Station (cable modem IP)
    > | (private network 192.168.100.*)
    > |
    > |-----iBook (wireless, IP from Base Station
    > DHCP)
    >
            This is exaclty the set up I used with the static IP (minus the G4)I
    can tell you that the PC did not get DHCP from the cable modem (which IS
    available however it never worked so they gave a static IP), but from the
    Base Station, so I assume (you know what assume means right 8-)..) it would
    work the same if the base station had DHCP from the cable modem, AS LONG as
    the airport is turned on first, allowed to do DHCP via the cable, THEN boot
    the clients...

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