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Connecting Hub to Router: Problems!!!

V

vicwang

Member
I've got a two-PC Windows 98 network using a four-port SMC Barricade router to connect to a cable modem. It works perfectly the two PC's are connected directly to the router, but as soon as I try going from PC-to-hub-to-router, any PC's going through the hub don't work.

I'm connecting the hub to the router via the uplink port, and I'm getting green lights on all connections. The hub works fine by itself, and the router works fine by itself.

As far as network settings go, the Barricade router has automatic DHCP, so I'm not manually assigning IP's or anything. It's all automatic. I've tried manually assigning IP's (just in case I need to do that in order to go through the hub) but that doesn't work either.

Is there anything special I need to do when going through a hub?

 
I'm assuming that there isn't a switch for the uplink port? Sometimes there's a switch. Or maybe there isn't and you would need a crossover?
 
"I'm assuming that there isn't a switch for the uplink port? Sometimes there's a switch. Or maybe there isn't and you would need a crossover?"

Hmmm... so maybe that's it. There isn't a switch for the uplink port, so I'll try using a crossover cable instead.

Thanks.
 
Oh yeah, when I'm connecting to the router via the hub (and using standard CAT5 cables) I CAN ping the router and access it through IE. It's just that internet access doesn't work.

If I do need a crossover cable, wouldn't it prevent me from even accessing the router at all when using standard cables?
 
1. If your cable modem came with Straight cable, and you connect it to regular Hub port, you have to use Cross Over.

2. If your cable modem came with Crossover cable, and you connect it to regular Hub port, you have to use Straight cable.

3. The WAN input of the Barricade is an Uplink I.e. if it connected to Regular Hub port you use straight, if it connected to the Uplink on the Hub use CrossOver.


Or find your way from this:

NIC to NIC - Crossover Cable.
NIC to Hub - Straight Cable
NIC to Uplink - Crossover Cable.

Hub (regular) to Hub (regular) - Crossover Cable.
Hub (regular) to Hub Uplink - Straight Cable.


Cable/DSL entry on a Cable/DSL Router (WAN) is an Uplink.

If your Modem came with Straight Cable:
Modem to NIC - Straight (regular) Cable
Modem to Hub - Crossover Cable.
Modem to Uplink - Straight (regular)Cable

If your Modem Came with Crossover Cable:
Modem to NIC - Crossover Cable.
Modem to Hub - Straight (regular) Cable
Modem to Uplink - Crossover Cable.

 
"The WAN input of the Barricade is an Uplink I.e. if it connected to Regular Hub port you use straight, if it connected to the Uplink on the Hub use CrossOver."

Many thanks for the help, guys. Well the cable modem uses a standard straight connection, so I tried connecting the cable modem to the router with a straight cable, then connecting the router to the hub's uplink port with a crossover, but I wasn't even getting a green light. When I connected that crossover to one of the hub's non-uplink ports I DID get a green light, but again there's no internet access. As soon as I cut the hub out of the equation though, everything works fine.

Is there anything special I need to do as far as network settings? I've tried both auto-assigning and manually assigning IP's but nothing has worked.
 
I'm assumign that you've triple checked to make sure that DHCP is enabled on all the comps....

Do the 2 98se computers work when the hub is plugged in still?
 
"I'm assumign that you've triple checked to make sure that DHCP is enabled on all the comps...."

Yes, all are using DHCP, although I've also tried disabling it when assigning IP's manually (disabling it on the router and on the PC's).

"Do the 2 98se computers work when the hub is plugged in still?"

The two PC's can communicate with each other just fine when using the hub, and they can communicate with the router (ping, access the router via web browser) but they have no internet access. However, if I unplug the PC's from the hub and plug them directly into the router, they instantly get internet access.
 
May be you should describe better your connection?

Cable - Hub - Router - Computer

What else is connected to the Hub?

If a computer is connected to the Hub and the Router comes after, then the Router has nothing to do with that computer, and has to be configured separately.
 
My setup is:

Cable - Router - Hub - Computers

Cable = standard cable modem (RoadRunner)

Router = 4-port SMC Barricade with DHCP

Hub = 4-port autosensing 10/100 Linksys, nothing else connected

Computers = Windows 98 systems

All cables are straight CAT5 ethernet, although I've also tried using a crossover in various locations with no luck.

Should I try going from Cable - Hub - Router - Computer ? If so, wouldn't it defeat the purpose of the router, since any additional PC's connected to the hub will show as multiple IP's?
 
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