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question about networking 1

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paul79

Technical User
Jul 31, 2009
12
CA
i have a cable modem running with nat configured behind a broadband router, i have a total of 5 comps, my problem is that i have to reset the modem about every 3 days because it loses its connection. does anyone no what this is do i have a bad nic on one of my comps, is it a bad router, or the modem. if anyone has any experience with this, please reply.
 
Hi,

I too am behind a router (Linksys) with SwBell DSL. I never had this problem but I might be able to help.

Go into your router config/setup and see if there is an option for Keep ALive or Connect on Demand. Make sure Connect on Demand is enabled / checked and a 0 (zero) in max idle time. It disconnects you connection after a certain amount of time.

If this doesnt help then see if you can put some time limit in KEEP ALIVE. What this will do it send data over the internet tricking your ISP in thinking your net connection is still active and thus will not disconnect. There should be a way for you ro choose time in seconds.

Refer to your routers manual or their support.

Hope this helps.

Zeeshan
 
The problem might just be with your cable provider. I had the same problem and it was finally traced to low signal input from the cable modem due to some cable buried outside that had been installed years ago without any protective conduit. the cable was dug up and replaced where it was corroded and now my systems run really well.
 
PAUL79,

It's just a hunch -
You may want to check with your ISP, to find out if they are using "DHCP" to assign your NAT router's address. Because you mentioned 3 days, (the default length of time most Windows NT DHCP Servers assign leased addresses for), I suspect this might be the problem.

Moreover - at one time, ISP's didn't want to know that anyone was using a router to split their broadband connections, just like when people used to add additional TV sets to their cable TV connection. For this reason, some ISP's will use DHCP...so, whenever you lease a new address - it's just possible that your 5 clients end up on different networks from the one the router is on every 3 days...

Have a look at your current TCP/IP address, and see if it's different in 3 days time, (the TCP/IP address of your router, that is...)

Just a thought! Let Me Know!
[pc3]
Rich
prescot9@hotmail.com
Father, Geek, and MCP
 
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