On Saturday, February 5, 2005, at 01:16 PM, Larry le Mac wrote:
When I check the Network settings, the working Mac has IP 213.66.212.57 and subnet mask 255.255.255.0
but the other one as a self assigned 169.254.244.32 and more pussling, the subnet mask 255.255.0.0
I have actually had exactly the same problem with a friend's iMacs and OS 9.2, but I put that down to a crap cable, though it was never verified.
Here I have tried two different cables and restarted, and tried different ports on the router.
It did work fine until it just suddenly gave up... ?!
I presume the subnet mask has something to do with it (I really must do an IP basics course!!)
Your situation looks like the router is acting more as a hub, passing through to the Mac with the 213.66.212.57 address which is a publicly assigned address from your ISP.
It's not supposed to do that.
There are two kinds of IP address: routed and non-routed.
By convention there are several address pools designated for private networks, that do not get routed by the public internet.
* LAN Addresses currently documented in RFC 1918: - private class A 10.0.0.0 to 10.255.255.255 - private class B 172.16.0.0 to 172.31.255.255 - private class C 192.168.0.0 to 192.168.255.255 - Local-Link (for auto-DHCP) 169.254.0.0 to 169.254.255.255
The subnet mask determines what your computer thinks is on your side or the other side of the router.
255.255.255.0 means you have local addresses between x.x.x.0 and x.x.x.255; your computer will look locally for such addresses and not talk to the router.
Now, what you have is one Mac, with a publicly routed IP address, and presumably, the correct subnet mask and all, and your other mac which self-assigned an address because when it asked, nothing replied.
I'll lay odds the problem is your router. That is the device that's supposed to get a public IP address from your ISP. On the inside, it's supposed to honor DHCP requests for address info (which includes the subnet mask, router and DNS addresses as well.)
Most routers I've seen will assign something in the 192.168.x.x range.
I'd start by turning off everything, resetting the ADS modem, resetting the router to it's default configuration and connecting it to the modem. That way the Modem provides the router with a public IP address, and it will then provide the connected Macs with private ones.
Then immediately connect to the router and change the default admin password, and set up any other features you need.
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