router uplink via another hub/switch

[tai4ji2x]

i assume not too many people have this situation, but any help to make it work would be appreciated:

i subscribe to cable along with an additional block of 4 IP's. therefore until now, i've never bothered with NAT or wireless, as i just used a hub/switch with the modem attached to the uplink port and all my client computers connected to the hub/switch's downlink ports (each client with their own software firewall installed, of course).

i'm currently just trying to see if i can keep this general setup, but also have one of the public IP's be assigned to a wireless router. the problem is, if i connect that router to any of my hub/switch's ports, all the other systems lose their connection. apparently my router needs to be directly connected to the cable modem and cannot first pass through a hub/switch. thus i can't seem to use BOTH my extra public IP's AND a wireless router at the same time.

is there any way around this? basically, what i'd like to do is: keep the separate public IP's for some more dedicated server-like applications, meanwhile the rest of the network for casual internet use would share the router's connection.

 

[nweaver]

shouldn't matter, you should be able to go Cable modem -> Hub (Straight) -> Wireless Router (Crossover, Internet port) without any problems

 

[tai4ji2x]

hmm... ok, it can pass through the hub/switch, but NOT if the other systems are also connected. in that case, nothing works. so it still seems like i has to be one or the other. am i still doing something wrong?

 

[Brazen]

Are pluging the the hub into the routers "internet" interface? As mweaver said, it should work like that. Basically the "internet" interface acts just like another computer being plugged in to the hub.

 

[tai4ji2x]

Originally posted by: Brazen
Are pluging the the hub into the routers "internet" interface? As mweaver said, it should work like that. Basically the "internet" interface acts just like another computer being plugged in to the hub.

yes, i'm pretty sure things are plugged correctly. if i turn off or unplug all the other computers from the hub, the router will pick up an IP. and vice versa - unplugging or turning off the router will revive internet connection for everyone else connected to the hub

 

[nweaver]

do you have the mac address "cloned" into the router?

THis doesn't sound right, I would try a different router maybe, because this is bread and butter easy, shouldn't matter type of networking.

 

[tai4ji2x]

just checked - nope, the MAC address cloning is disabled.

hmm

 

[tai4ji2x]

bump... any other insights?

 

[tai4ji2x]

nobody?