Dan,
This is one of the best responses I've seen on this site. A tech expert
that speaks plain English! (any chance we could talk you into giving a
presentation on wireless at the next meeting????)
Greg
> On May 13, 2006, at 22:49, Dan Crutcher wrote:
>
>> Before we go any further, let's make sure we're talking about the same
>> IP numbers.?
>>
>> 1. There is an IP number assigned by your Internet Service Provider,
>> often called the WAN (Wide Area Network) IP number. If you have two
>> providers, as you apparently do, you would have two WAN IPs ? one for
>> Cable and one for DSL. Assuming you have connected one of your routers
>> to the Cable connection and one to the DSL connection, there should
>> not be any conflict with the WAN IPs ? each would necessarily be
>> different.
>>
>> 2. Then there are the IP numbers used by your router(s). Let's call
>> these the LAN (Local Area Network) Router IPs. It looks as if Apple's
>> Airport uses the IP number 10.1.1.1 as the default for its routers
>> (most non-Apple wireless routers use 192.168.1.1 or something similar
>> as Router IPs).?
>>
>> 3. And then there are the IP numbers assigned by your router to the
>> computers (or other devices) it finds. These will be in the same range
>> as the Router IP ? so that, if your router has the IP 10.1.1.1, it
>> will assign IPs to local devices of 10.1.1.2, 10.1.1.3, etc. (assuming
>> you are using DHCP and NAT to assign IPs to local devices).
>>
>> I think the fact that you have two wireless routers presumably trying
>> to share the same LAN Router IP of 10.1.1.1 is the source of your
>> problems. I have a situation where I have two routers providing DHCP
>> to devices on the same network ? one is wired, the other wireless ?
>> and I had to change the wireless Router IP to something different than
>> the wired one. (Both were set by default to use 192.168.1.1.? I was
>> able to use the router's built-in Web interface to change one of them
>> to 192.168.2.1 and that allowed me to use both on the same network.)
>>
>> I think you will need to do something similar with one of the Airport
>> routers. I've never used its Web interface, so I don't what it's
>> settings look like, but I suspect there will be a way to change one of
>> the routers to, say, 10.1.2.1, so that it will then assign its DHCP
>> addresses in the 10.1.2.x range while the other assigns them in the
>> 10.1.1.x range. You will almost certainly have to turn one of them off
>> while you make that change.
>>
>> In the foregoing, I've made several assumptions about Airport routers
>> that may not be true, so someone with more knowledge of that
>> particular router might verify or alter my assumptions.
>>
>> If this works, you should be able to have each computer choose which
>> Airport it wants to connect to and there shouldn't be any conflict
>> between the two.
>>
>>> Need help from one of the smart ones....
>>>
>>>
>>> With all the unbelievable problems with Insight I had to install a
>>> backup source for getting online, so I installed a DSL line, to give
>>> added protection I put it behind an Airport Express router, as I
>>> already had done with Insight.
>>>
>>> So I am running two Airport Express routers, named them each
>>> differently, put them on the network and by golly it works
>>> unbelievably well, this blew me away for this would have taken a
>>> degree had I tried to get all this to work under Windows I am
>>> convinced.
>>>
>>> I have one problem when I put one of the computers on DSL and the
>>> others are on Cable, the two routers are wanting to use the same IP
>>> addresses, thus shutting down the DSL for it was wanting the same IP
>>> address that was already in use by the Insight router.
>>>
>>> When I open the Airport Admin utility I find that once I am logged in
>>> I can click on the "network" tab and there I have an option for
>>> "share a range of IP addresses" which is dimmed, and the "share a
>>> single IP address (Using DHCP and NAT) is what is highlighted.
>>>
>>> So, can I get around my problem by selecting the cable network (since
>>> this say using DHCP) I assume I can't use this with the DSL line, or
>>> is DHCP for the router and has nothing to do with Cable?
>>>
>>> If I do select the range, what numbers do I type in there? Below is
>>> the wording of the error that appeared on screen as DSL was shut
>>> down.
>>>
>>> The IP configuration that showed as an error read: 10.0.1.3 in sue by
>>> 00:11:24........DCHP Server 10.1.1.1
>>>
>>> Most likely I have not explained this well, but someone out there my
>>> still be able to understand what is going on and what I need to do
>>> for correction.
>>>
>>> Many thanks,
>>>
>>> John R.
>
>
>
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>
| The next meeting of the Louisville Computer Society will
| be May 23 at Pitt Academy, 6010 Preston Highway.
| The LCS Web page is <http://www.kymac.org>.
| List posting address: <mailto:macgroup at erdos.math.louisville.edu>
| List Web page: <http://erdos.math.louisville.edu/macgroup>
