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q2418130103p · 04-24-2002, 04:26 PM

Hi guys,
I'm trying to switch over a dsl provider from one company to another. Its for a netowrk of maybe 7 computers or so.

The first company had this kind of a setup installed.
DSL modem -> Gateway/Router -> Hub

The second company already had these things in when I got here.
DSL modem with built in router and 4ports and thats it.

Now my problem is that I can't get the hub hooked up to this new modem router thing. I tried going from regular port to regular port with a crossover cable, and the hub wouldn't see the router and no computer would get an IP. I tried going from an uplink to a regular port with a strait through cable and that didn't work either.

I know that the router modem thing is ok though because I plugged a computer directly into it and it got an IP.

Could it be possible that the hub will not work with another companies equipment?

Thanx,
Jay

TheOldMan · 04-24-2002, 04:51 PM

What kind of equiment (make/model/etc.) is this modem/router thing?

The Old Man

q2418130103p · 04-24-2002, 05:29 PM

Im not sure, I can check tomorrow when I am back there again, but I cant remeber ever seeing any logos on it besides the ISP's logo. (like I didnt see netgear or 3com or anything that I can remeber)

TheOldMan · 04-24-2002, 07:38 PM

There are some newer products that combine a DSL modem with a router and a switch these days. Allied Telesyn makes one, for example. They are aimed at the small business and residence. They are more expensive than the LinkSys and NetGear that do not bundle the modem but are supposed to be as simple to connect.

I am not familiar with the details but if they work like the others, I think you just switched when to use which cable. Regular switch port to hub port would use a straight-through cable since the cross-over is done in the device. Up-link port to regular port would use a cross-over. When you go back, try that.

Hope that helps.
The Old Man

q2418130103p · 04-24-2002, 08:25 PM

I think I tried all possible combinations of cables and ports but I will try it again anyways.

I do remeber that on the hub were two lights per port and one of the wire arrangements would make the top light (which was not lit on anyother port) turn amber.

Confused · 04-25-2002, 07:38 AM

Hub to router uses a straight thru cable. Only time a crossover is used is when connecting two PC's.
Chas

TheOldMan · 04-25-2002, 01:04 PM

Actually, it has to do with whether a connection is classed as DCE (Data Comm Eqpt) or DTE (Data Term Eqpt). NIC's are considered DTE's. Hub and switch ports are considered DCE's. Uplink ports are sometimes an exception and may be wired differently, depending on the vendor. Connecting a DTE to a DCE requires a straight-through cable. Connecting a DTE to a DTE or a DCE to a DCE requires a cross-over cable.

As an example, from the LinkSys support page:
===========
Straight-through cables are used for connecting computers to a hub. Crossed cables are used for connecting a hub to another hub (there is an exception: some hubs have a built-in uplink port that is crossed internally, which allows you to uplink hubs together with a straight cable instead).
===========

I also reversed the use last night in my post. Under the affluence of incahol, perhaps. If you can get the spec on the device, we can get details on what type of ports they are and straighten this out.

The Old Man

q2418130103p · 04-25-2002, 04:22 PM

ok, I got some specs

the router modem thing says this on it:
Efficient Netoworks
Speed Stream
Model# 5851

The hub says this
ADDTRON 100BaseTx Class II Repeater
(thats all I could find on that)

Jay

q2418130103p · 04-25-2002, 05:22 PM

Well, I took their hub home with me to test it out here and I let them use my netgear hub. I used a strait throu cable to connect from the uplink port on the hub to a regular port on the modem router thing. And that worked

But I still need to know what to do about this hub cause I hae to give it back

Jay

TheOldMan · 04-25-2002, 07:42 PM

jay,

OK, that's a Siemens SpeedStream 5851. It is a combined DSL modem/router with an integrated 4 port 10 Mbps hub [not switch]. The rear panel connectors are for DSL, console (RS-232) and 4 LAN ports. Connecting one of these LAN ports to a regular hub port would need a cross-over cable. Connecting one of these LAN ports to the uplink port on the hub would use a straight-through cable. As you said, this worked.

How did you try connecting their hub to the router?
Can you describe the hub? Addtron has a number of Ethernet hubs and Dual-speed hubs. Not all are auto-sensing. If they have a non-sensing hub set to 100 Mbps, it will not work with the SpeedStream since the LAN ports are 10 Mbps.

The Old Man

q2418130103p · 04-25-2002, 08:25 PM

Ok, I went to the addtron site and found the hub. Its the ADH-1008.

Jay

TheOldMan · 04-25-2002, 10:37 PM

jay,

If you've got a couple of computers at the shop, try connecting them to the hub. See if you get a link indication and not an error/partition indicator. There's not too much you can do to diagnose a hub other than that. Either it connects or it doesn't.

If you get a connect, bring it back and try connecting to the 5851 with the same straight-through that worked with the NetGear. BTW, the uplink is configured to be used with straight-through. Connecting any other port on the hub to the router would use the cross-over.

Sorry there isn't more that can be done. Good luck.
The Old Man

q2418130103p · 04-26-2002, 06:43 AM

ok, thank you

If gonna try to cascade the hub with one of my switches and see if I can get that working.

Thank you again,
Jay

04-24-2002, 04:26 PM	#1
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	Switching isp's problem. Hi guys, I'm trying to switch over a dsl provider from one company to another. Its for a netowrk of maybe 7 computers or so. The first company had this kind of a setup installed. DSL modem -> Gateway/Router -> Hub The second company already had these things in when I got here. DSL modem with built in router and 4ports and thats it. Now my problem is that I can't get the hub hooked up to this new modem router thing. I tried going from regular port to regular port with a crossover cable, and the hub wouldn't see the router and no computer would get an IP. I tried going from an uplink to a regular port with a strait through cable and that didn't work either. I know that the router modem thing is ok though because I plugged a computer directly into it and it got an IP. Could it be possible that the hub will not work with another companies equipment? Thanx, Jay

04-25-2002, 07:38 AM	#6
Confused Member (13 bit) Join Date: Nov 1999 Location: Mt Washington, KY Posts: 4,927	Hub to router uses a straight thru cable. Only time a crossover is used is when connecting two PC's. Chas __________________ I may not be much, but I'm all I think about.

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04-24-2002, 04:51 PM	#2
TheOldMan Member (9 bit) Join Date: Feb 2002 Location: State of Confusion Posts: 386	What kind of equiment (make/model/etc.) is this modem/router thing? The Old Man

04-24-2002, 05:29 PM	#3
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	Im not sure, I can check tomorrow when I am back there again, but I cant remeber ever seeing any logos on it besides the ISP's logo. (like I didnt see netgear or 3com or anything that I can remeber)

04-24-2002, 07:38 PM	#4
TheOldMan Member (9 bit) Join Date: Feb 2002 Location: State of Confusion Posts: 386	There are some newer products that combine a DSL modem with a router and a switch these days. Allied Telesyn makes one, for example. They are aimed at the small business and residence. They are more expensive than the LinkSys and NetGear that do not bundle the modem but are supposed to be as simple to connect. I am not familiar with the details but if they work like the others, I think you just switched when to use which cable. Regular switch port to hub port would use a straight-through cable since the cross-over is done in the device. Up-link port to regular port would use a cross-over. When you go back, try that. Hope that helps. The Old Man

04-24-2002, 08:25 PM	#5
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	I think I tried all possible combinations of cables and ports but I will try it again anyways. I do remeber that on the hub were two lights per port and one of the wire arrangements would make the top light (which was not lit on anyother port) turn amber.

04-25-2002, 01:04 PM	#7
TheOldMan Member (9 bit) Join Date: Feb 2002 Location: State of Confusion Posts: 386	Actually, it has to do with whether a connection is classed as DCE (Data Comm Eqpt) or DTE (Data Term Eqpt). NIC's are considered DTE's. Hub and switch ports are considered DCE's. Uplink ports are sometimes an exception and may be wired differently, depending on the vendor. Connecting a DTE to a DCE requires a straight-through cable. Connecting a DTE to a DTE or a DCE to a DCE requires a cross-over cable. As an example, from the LinkSys support page: =========== Straight-through cables are used for connecting computers to a hub. Crossed cables are used for connecting a hub to another hub (there is an exception: some hubs have a built-in uplink port that is crossed internally, which allows you to uplink hubs together with a straight cable instead). =========== I also reversed the use last night in my post. Under the affluence of incahol, perhaps. If you can get the spec on the device, we can get details on what type of ports they are and straighten this out. The Old Man

04-25-2002, 04:22 PM	#8
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	ok, I got some specs the router modem thing says this on it: Efficient Netoworks Speed Stream Model# 5851 The hub says this ADDTRON 100BaseTx Class II Repeater (thats all I could find on that) Jay

04-25-2002, 05:22 PM	#9
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	Well, I took their hub home with me to test it out here and I let them use my netgear hub. I used a strait throu cable to connect from the uplink port on the hub to a regular port on the modem router thing. And that worked But I still need to know what to do about this hub cause I hae to give it back Jay

04-25-2002, 07:42 PM	#10
TheOldMan Member (9 bit) Join Date: Feb 2002 Location: State of Confusion Posts: 386	jay, OK, that's a Siemens SpeedStream 5851. It is a combined DSL modem/router with an integrated 4 port 10 Mbps hub [not switch]. The rear panel connectors are for DSL, console (RS-232) and 4 LAN ports. Connecting one of these LAN ports to a regular hub port would need a cross-over cable. Connecting one of these LAN ports to the uplink port on the hub would use a straight-through cable. As you said, this worked. How did you try connecting their hub to the router? Can you describe the hub? Addtron has a number of Ethernet hubs and Dual-speed hubs. Not all are auto-sensing. If they have a non-sensing hub set to 100 Mbps, it will not work with the SpeedStream since the LAN ports are 10 Mbps. The Old Man

04-25-2002, 08:25 PM	#11
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	Ok, I went to the addtron site and found the hub. Its the ADH-1008. Jay

04-25-2002, 10:37 PM	#12
TheOldMan Member (9 bit) Join Date: Feb 2002 Location: State of Confusion Posts: 386	jay, If you've got a couple of computers at the shop, try connecting them to the hub. See if you get a link indication and not an error/partition indicator. There's not too much you can do to diagnose a hub other than that. Either it connects or it doesn't. If you get a connect, bring it back and try connecting to the 5851 with the same straight-through that worked with the NetGear. BTW, the uplink is configured to be used with straight-through. Connecting any other port on the hub to the router would use the cross-over. Sorry there isn't more that can be done. Good luck. The Old Man

04-26-2002, 06:43 AM	#13
q2418130103p Member (9 bit) Join Date: Jan 2002 Location: Rhode Island, USA Posts: 378	ok, thank you If gonna try to cascade the hub with one of my switches and see if I can get that working. Thank you again, Jay

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