How do I set this network up right?

[someguy]

I need to share files between my PB (10.4.9) and my iMac (10.3.9). The problem is the way I have my network set up.

I have my modem plugged into a 5-port switch, feeding 3 computers (including the iMac) internet. The remaining port plugs into my AirPort Express Base Station which allows my PB to connect to the internet wirelessly. Everything works great except my iMac can only see the other computers plugged into the switch, and cannot see my PowerBook.

Is there anything I can do to link these two computers together other than change my network configuration?

 

[emw]

Is there anything I can do to link these two computers together other than change my network configuration?

Seems like it would be a fairly simple thing to just plug your PB into the switch, since the iMac can see those computers.

My guess is that the Airport is providing a DHCP IP address to your PB which is outside the hard-wired IP range - on a separate subnet.

 

[someguy]

Seems like it would be a fairly simple thing to just plug your PB into the switch, since the iMac can see those computers.

My guess is that the Airport is providing a DHCP IP address to your PB which is outside the hard-wired IP range - on a separate subnet.

I need to be able to roam wirelessly, plus my PowerBook is in another room half the time.

 

[jeremy.king]

I have my modem plugged into a 5-port switch

Is this device a router? If so, disable DHCP server on the airport express (uncheck Distribute IP Addresses in the Network tab of Airport Admin)

 

[emw]

I need to be able to roam wirelessly, plus my PowerBook is in another room half the time.

Sorry, my initial impression was that it was a one-time thing.

It sounds like you have a router connected to your cable modem that provides DHCP services to the wired computers as well as to the AEBS. Not sure how to get the AEBS to subsequently provide IP addresses on the same subnet to your PB, since you'd then have 2 DHCP servers on the same subnet, which I think is problematic.

I imagine the Airport Express Setup Assistant should be able to help, at least it implies your setup should work in the User Guide, though doesn't give many details.

Edit: took too long looking stuff up. I think kingjr3 has a potential solution for you.

 

[someguy]

Is this device a router? If so, disable DHCP server on the airport express (uncheck Distribute IP Addresses in the Network tab of Airport Admin)

So obvious! Thanks!