sundance-communications.com/forum Forums Computers & Programming Computers, Software, Accessories DHCP Conflicts

Ev:

Here's a lengthy post worthy of a reply to Ev :toothy:

The ICS on XP is very easy to find. Go to My Computer>My Network Places>Network Connections and right click on the active connection. Select Properties, and go to the Advanced Tab. You will see a check box for ICS.

On 98 as I recall, you right click on Network Neighborhood, go to Properties and then on the main tab, it will show as an installed component in the little window. The other things in that window are TCP/IP, Adapter, etc.

Now, if you want to address the modem issue here's what we can do. First, if the modem is attached to the WAN port on your router, this really shouldn't matter, but it won't hurt either to kill it. If on the other hand, your modem is attached to one of the switch ports as is usually done when going from a modem to a Linksys box, then it's a HUGE ISSUE. I say usually as in the presence of a modem many people just use the Linksys box as a DHCP server and switch. So you might want to double check that. Are the WAN lights active on the front of the Linksys box?

First, if your wife's computer is attached directly to the modem, when it get's it's address, either by clicking on the network icon in the SysTray and going to the support tab, or by going to DOS and doing an IPCONFIG command. On earlier versions of Win9x you had to use winipcfg. Once you have the IP address make a note of it and let us know. Then do the same when hooked to your switch. What we're trying to do is find out if the two servers are issuing addresses in a conflicting range assuming the modem has the ability to get to your LAN.

As for the modem not being able to be configured, YEP. Been there. SBC installed an Adtran IAD on a T-1 at a law office here. Same problem. The line came out of the Adtran, then to a port on a Linksys box that was being used as a switch and a Wireless Access Point. The Linksys was also supposed to be the DHCP Server. SBC set their router (The Adtran) to be a DHCP server for the LAN side. No configuration available at all by the customer. We spent an hour and a half on the phone getting DHCP turned off.

Lastly, are there any network printers that could have static addresses?

The Linksys routers have always worked great for me. The only thing that should be plugged into the modem is the WAN port on the router. This way the cable provider gives an address to the WAN port, which is what everyone on the outside thinks is your only address.

Unless you spent several hundred on a hub/switch, it won't have DHCP on it.

In the router's DHCP setup, it should list what addresses it will assign, usually a starting address and number of addresses. I would assign a static address to all your computers that is outside of this DHCP range. If DHCP is from .100 to .150, give each computer an address of .10, .20, and so on, anything between .2 and .99. That way, the computers will never interfere with each other or any DHCP device (like the phones).

Since nothing could get an address with DHCP turned off in the router, there shouldn't be any other DHCP server (or ICS) on the network.

Let us know, I can either talk you through it on the phone or configure it remotely.

There is a power setting in XP that will turn off the NIC to save power. I've seen this cause issues on some machines in different networks. I disable that on computers if I leave them on all the time.

Same thought here nic power downs are common.

junkman is on the money, thats how I do it at home as well. Never a problem and I do the same as you test ip phones and other network goodies like cameras all the time

ev607797
Well here is what I can share with you, I have exactly the same setup as you have "Motorola Cable Modem ---> Linksys Router" now here is the rub, about 2 years ago our ISP "Comcast" changed the way they do things, it use to be that you could have just a HUB behind the modem evrything running DHCP and the modem would hand out up to 6 IP's as was needed, then they made a change and the modem would only pass out 1 so off to Best Buy and picked up a Linksys Router, I did run it for a while as a DHCP server but bit the bullet about a year or so ago and went static on everything ,many problems disappeared after that, my router model # is BEFSX41 and with it is a DMZ port that can be configured different than the rest of the ports on the router, reading through this thread I can see that the suggestions being shared with you by everyone is spot on, looks like you have all the hardware on hand you just need to reconfigure the router and each PC's nic, just one more thing the next time you are in the router change the password as has been suggested, helps to keep the script kiddies from having fun at your place, below are a couple links to some network pages that may be of some help.........

https://www.networkingtutorials.net/
https://handsonhowto.com/lan102.html
https://forum.osnn.net/archive/index.php/f-19-p-3.html
https://www.dslreports.com