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PostPosted: Sat Dec 29, 2007 7:10 pm    Post subject: Using VT2442 have to disable/enable lan to connect to net Reply with quote Back to top

My current configuration, which has given me good voice quality and minimized dropped calls, especially overseas is the following:

modem --> VT2442 -- 3 separate upstairs computer
connection to downstream linksys wrt54g

(then) linksys wrt54g --> laptop in upstairs room
connection to (a 2nd) downstream linksys router (downstairs)

2nd linksys router (downstair) --> two computers
LAN laser printer

I have been running this configuration without the VT2442 (at the first level) for about 5 years and no problems.

I received the VT2442 less than a month ago and simply attemped to connect directly to a LAN port on my first stage linksys (at that time) but had problems initializing the phone function and suffered from a lot of dropped calls and poor quality phone service.

I decided to place the VT2442 as the first level router in the configuration and voila, excellent phone quality and good internet service with one hitch. Each time a boot any computer and try to connect to the internet, using Mozilla or IE , I get the looking up google (my homepage) message basically telling me I either cannot find my DNS servers for address translation, or the router has not initialized my IP address.
At this point, I go to my network connections, disable and enable the LAN connection and all is well until I reboot again.

This happens on all the computers connected directly to the VT2442 LAN ports as well as the downstream computers connected to the downstream linksys routers. But remember, downstream connection is initiated from one of the LAN ports of the VT2442.

The disable/enable requirement is annoying and my wife and kids are not that computer literate so getting them through the routine is a bit more problematic. I have enough inhouse routers to obviate the use of the routing function of VT2442, but,unfortunately, that doesn't seem to be a viable solution because as stated before, connecting the VT2442 into a Linksys router port resulted in constant dropped calls and forced the VT2442 to redundantly reinitialize the phone service to the point that I got phone service less the 20% of the time.
Does anyone have a suggestion or a workaround so that I don't to go through the disable/enable scenario each time that I boot.

In doing an ipconfig, my computers only see the VT2442 as the DNS server, does this mean the router is providing my address translation by requesting it from the ISP and then passing it to me? I could certainly assign the "dynamic" IP address assigned to each computer as a static IP address (all the computers are connected via CAT5) and then assign the ISP's DNS servers statically. Would that work?

The only problem there would be if the ISP ever changed the DNS servers.
I await any suggestions.
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PostPosted: Sun Dec 30, 2007 3:10 pm    Post subject: Reply with quote Back to top

A little more information. When I boot any given pc and do an ipconfig /all, the computer will show an ip address of (this would be the address on the old linksys address). When I then disable/enable, do an ipconfig /all, it shows the correct IP address of which is the IP address behind the Vonage (VT2442) router. What is assigning this old and incorrect IP address during boot, the modem? The LAN cards to not retain address details to my knowledge. I did cycle the modem down for about 15 minutes but now change. This assignment of the wrong/old IP number happens on all computers in my configuration and is fixed by the disable/enable. Do I need to cycle down the modem for a longer time? Lease time is 3600 seconds (1 hour).
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PostPosted: Sun Dec 30, 2007 4:47 pm    Post subject: Reply with quote Back to top

Your setup is rather complicated, but have you disabled DHCP on all of the other routers except for the main one? (the VT2442)

This is only a guess on my part, but since the IP address changes ranges when you do a release and renew I'm thinking that the first time you pick up an IP address it is from one of the linksys routers and then afterwards you get the one from the VT2442 which then works. Since the VT2442 is connected to your internet connection you should have it distribute addresses and DNS info.

When you have multiple routers on a network like this you only want to have 1 acting as the DHCP server otherwise you can get odd conflicts.

I would give this a try and see if it helps. If you can't connect to the configuration pages of the linksys routers I would take the laptop and connect with a wired connection to them in order to make the change.

Vonage Customer since: 11/2004
ISP: Time Warner (RoadRunner)
Location: NC
Network Setup: Motorola SB5101->Linksys WRT54GL (Running Tomato) ->RT31P2 & PAP2
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PostPosted: Mon Dec 31, 2007 10:27 am    Post subject: Reply with quote Back to top

Thanks a lot. Disabling DHCP server seems to have done the trick. I had done some additional tests, taking the Linksys servers out of the equation (shut down), and the correct IP addresses were passed and initiated. Then disabling the DHCP server, seems to have worked downstream.

I had also tried giving each of the computers a static IP address, which was the address they would have received anyway from the hard-wired port, and that worked. But that solution said that you always had to be aware of your port position if you moved the computer (say laptop) from drop to drop. You can say, why don't you use a wireless connection for the laptops, but I transfer huge files between computers and need the throughput that a wired solution provides. Anyway, thanks again.
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