Dan, Many thanks, I so appreciate your long reply. You are right in all this, and it was a good education as well. I'll see what I can get accomplished.
John R. On May 13, 2006, at 10:49 PM, 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. > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.math.louisville.edu/pipermail/macgroup/attachments/20060513/d5263614/attachment.html
