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dslx_steve
Premium Member
join:2011-03-24
Winnetka, CA

dslx_steve to jimrich

Premium Member

to jimrich

Re: [Siemens] How to configure Siemens 4100 modem

If I understand correctly, you have a router and the Speedstream and you want to get into the modem's config. If so, you will have to bypass the router (assuming you haven't done so already) and connect the modem directly to one of your computers. After doing that, you need to configure your computer with a static IP. Let us know what OS you are using and we can give you the specific steps but generally, you want to set up the network properties for your local area connection with the static IP of 192.168.0.2, default gateway of 192.168.0.1 and subnet mask of 255.255.255.0

You should than be able to connect to the modem. Make sure you remove the static config and reconnect your router after you're done.
jimrich
join:2012-08-09
Encino, CA

jimrich

Member

re: If I understand correctly, you have a router and the Speedstream

>>> Nope, just a Siemens modem! Not sure how the term "router' got mixed into here!?!

dslx_nick
ISP Employee
join:2011-12-24
Chatsworth, CA

1 edit

dslx_nick

ISP Employee

said by jimrich:

re: If I understand correctly, you have a router and the Speedstream

>>> Nope, just a Siemens modem! Not sure how the term "router' got mixed into here!?!

"to sashwa
RE: What are you trying to do?
>> trying to run diagnostics on my modem as layed out in the Siemens PDF manual:
To establish a connection from your computer to theRouter:
1. After installing the Router, start your computer. If your computer is already running, reboot it.
2. Open yourInternet ExplorerorNetscapeNavigator Web browser.
3. In the Addressbar, enter the default router IP address: »speedstreamand press Enter. This
displays the Gateway Administrator Setup window."

Sometimes documentation will incorrectly refer to a modem as a router. To further confuse the issue, some modems are combo modem/routers which only have one output port and no wireless (so really, they can only support a single computer unless you introduce another networking device to split the line), and other modems are combo modem/routers with multiple output ports and wifi capability.

What gets REALLY fun is when you have a combo modem/router linked to a second router... =x

EdT
join:2009-06-12
Saint-Laurent, QC

1 edit

EdT to jimrich

Member

to jimrich
The SpeedStream 4100/4200 is indeed a modem/router !

You just need to use a inexpensive multi-port switch to use it on multiple computers. It can in fact route up to 254 separate computers ! This is where most people get confused when they use the 4100/4200 with a router which will not work unless they change the 4100/4200 into a bridge mode modem ! With whats available on the retail market today I would be hard press to find a wireless switch if you want a wireless network !

dslx_nick
ISP Employee
join:2011-12-24
Chatsworth, CA

dslx_nick

ISP Employee

One tactic which usually works, if you've got a single-port combo modem/router and a multi-port (probably wifi too) router, is to configure the combo modem/router for the connection type (whether DHCP or PPPoE), and then configure the multi-port router to DHCP... BUT you have to make sure that each device has a unique IP.

Many (but certainly not all!) modems and routers default to 192.168.1.1, which means if you have both the modem and router using the same IP (for example, 192.168.1.1) then this won't work - you'll need to go into one or the other and configure it to use a different IP. The Speedstream in this thread, for example, is using a default gateway of 192.168.0.1, so as long as the wifi router is NOT using the same IP of 192.168.0.1, then this would work. Airport routers, for example, typically use 10.0.0.1 for their gateway IP, so you could use an Airport router (set to DHCP) with the above Speedstream modem (set to DHCP or PPPoE as appropriate) with no problems.

You'll also need to pay attention to the DHCP leases being 'passed on' to the later devices, including your computers. If your modem is set to 192.168.1.1, for example, that usually means it's going to assign 192.168.1.2 to the next device in line (the router). Therefore, it's important to make sure that the router does NOT try to assign 192.168.1.2 to any computers! Make sure to check/update the DHCP IP range that the router is giving to your computers (by default, many routers will have a DHCP IP range of 192.168.1.2 to 192.168.1.254 or thereabouts, so you'd want to edit it to, say, 192.168.1.3 to 192.168.1.254).

Frankly, I usually find it faster and easier to just set the modem into Bridge mode, and configure the router normally. In some rare cases, however, we've run into modems that just refuse to go into Bridge mode - which makes the above option a bit more pertinent, as long as the modem itself at least can authenticate and get online.

(Btw, we did fix Jim's line issue a while back, but posting just to provide some (hopefully) useful generic info on for anyone that happens to be reading)

EdT
join:2009-06-12
Saint-Laurent, QC

EdT

Member

For the record, the SS4100/4200 with crippled Bhell firmware uses 192.168.2.2 as the default IP and 192.168.2.1 as the gateway while the same retail version of this modem with the generic Siemens firmware uses 92.168.254.1 as the default IP and 192.168.254.254 as the gateway.