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Using Linksys router to add wireless to cable network

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steveavis

Yes, that's the kind of setup I'm after...

The modem's got three sockets- a coax for the connection to the cable network, the RJ45 I'm using & a USB (don't really want to use that, as it only allows for one computer to be connected at a time!). The only adjustment I get on the modem is to disable DHCP.


The modem's IP is 192.168.100.1, with it's DHCP pool running from 192.168.100.11-42, so I assigned the router as 192.168.100.2, the laptop as ...3 & a desktop as ...4 & turned DHCP off on the router.
both computers could see both modem & router, but neither of them could go online...

The subnet mask assigned by the modem is 225.225.248.0 (I think- that's what ipconfig/all tells me...), while the router will only accept values 225.225.225.x (via a drop down menu). Could this be my problem?

(the last two paras copied & pasted from my answer above).

Come to think about it, I had a different computer when the modem was installed, so I'm even surer that the MAC doesn't signify...

How do I tell if the modem's getting an external IP?


I've disconnected the rest of the network- below is the result of one PC connected to the modem (with DHCP enabled on the modem)


ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : SNz123456789
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com 3C920B-EMB-WNM Integrated Fast
Ethernet Controller
Physical Address. . . . . . . . . : 00-11-2F-08-04-B6
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 82.36.210.231
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Default Gateway . . . . . . . . . : 82.36.208.1
DHCP Server . . . . . . . . . . . : 62.30.192.114
DNS Servers . . . . . . . . . . . : 194.168.4.100
194.168.8.100
Lease Obtained. . . . . . . . . . : 08 August 2008 20:53:28
Lease Expires . . . . . . . . . . : 15 August 2008 00:22:01


Does this help?