My setup: Cable modem -> VT1000 with QoS -> Linksys BE

Posts: 2 · New Forum Member Joined: Jan 08, 2005 Posts: 2

Is there anyone else who has setup like this for a WGR641v5 router? I tried this and it did not work at all. I can't even get the vt1000v to work on the inside lan. I have it sitting on the outside.

cable (dhcp) modem---->vt1000v--->netgear--->pc's

Any help woud really be great!

I have tried everything it seems and I still can't hit my pc from the outside. I know it has to do with the vt1000v and the internal address for port forwarding on the PC port (192.168.102.1) Because my router is on the 192.168.1.1. 2 different segments. I have also taken the vt1000 out of the picture and then I was back to normal, even when I hade a different router, I was able to put the vt1000 inside my lan.

Thanks all!

Anonymous wrote:

Today I realized that Vonage was getting a DHCP address from my ISP (Millenium Cable) but then giving my router a private IP address. This is no good for me because I run mail/web/etc servers on my home network that I need to be reachable from the outside world, and I did not want to use the limited port forwarding in the MTA when I have the much better facilities in my Netgear router.

My setup was (and still is):

cable modem ---> Vonage MTA ---> netgear router ---> my PCs

After much playing about and frustrating dead-ends I finally made this work.

1) Disable NAT on the Vonage MTA.

2) Reboot everything in order (cable modem then Vonage mta then netgear router), and then reboot the cable modem *again* so that it gets a chance to "see" the netgear router through the MTA pass-through.

This worked for me, but the second reboot of the cable modem was important. I remember my cable installer telling me that the cable modem would need to be rebooted any time a different device was plugged into the network port, so I tried it and it worked.

Everything seems to be working just great now.

However, I have one question. I can no longer ping or http to 192.168.102.1. It seems that the MTA has turned off it's listeners. So if I ever want to change the configuration on my MTA it seems I'm screwed and I cannot find a way in the documentation to return the MTA to factory settings. This might be because my internal network is not 192.168.102.x - I use 192.168.0.x since that is the netgear default. But with the MTA in NAT mode I was still able to successfully ping/http to the MTA on 192.169.102.1.

So, just in case I need to make a change in the future, does anyone know how I would restore my MTA to its default settings? Or how I can get back into the http interface?

Thanks, and I hope my experiences help anyone trying to get this to work. Smile

Posts: 227 · Vonage Forum Master Joined: Dec 10, 2004 Posts: 227

justpaul wrote:

wow, sorry for the mess-up.

If you were to experiment again, I would try this:

[Before you start] Open browser, go to 192.168.1.1, username/pass admin/admin (assuming you have not changed the defaults of the linksys router) check the bottom window and make sure "obtain an ip automatically" or "static ip" is set. Go to status page, record ip address for wan connection (it will probably be 192.168.102.100).

[Step 1] Unplug your pc from the linksys, set your lan connection to obtain ip address automatically (dhcp), connect the pc directly to your modem. From a dos prompt, type ipconfig /renew [enter] followed by ipconfig [enter] record your ip address. It should not be anything that starts with 192.168.x.x. Open your browser, surf somewhere (except this site, it keeps going down Very Happy

) If this step fails, then you need to reexamine what is needed from your isp to get online (username/pw etc)

[Step 2] Unplug your pc from the modem set the pc's ip to 192.168.102.2/sub 255.255.255.0/gw 192.168.102.1 , connect your pc to the pc port of the vt1000 and browse to 192.168.102.1 disable nat, set the wan side to dhcp if it isn't already (don't forget this step!!!). Save changes and allow the mta to reboot.

[Step 3] Unplug your pc from the vt1000, set the ip back to dhcp like you did in step one. Plug the wan port of the mta into the back of your modem, plug the pc port of your mta to your pc. Check your modem and pc for link lights showing valid connections to the mta. From a dos prompt, type ipconfig /renew [enter] followed by ipconfig [enter] record your ip address. It should not be anything that starts with 192.168.x.x. Open your browser, surf somewhere. If this step fails, then either the mta is not forwarding properly, there is a connection problem, or your dns settings are not set properly.

[Step 4] Unlplug your pc from the mta, plug the linksys wan port to the mta pc port, plug your pc into the lan side of the linksys. From a dos prompt, type ipconfig /renew [enter] followed by ipconfig [enter] record your ip address. It SHOULD start with 192.168.x.x. Open a browser and attempt to surf somewhere. If this fails, open 192.168.1.1 (assuming the ip address the linksys gave you was 192.168.1.x) enter username password (default admin/admin). Go to the status page and make sure the wan ip address has some ip other than 192.168.x.x. You may need to click dhcp release/renew.

That should do it, if you follow these steps and record where the train left the tracks, we can troubleshoot what to do next.

Don't forget the DNS.

Posts: 2 · New Forum Member Joined: Jan 08, 2005 Posts: 2

Ok, there is a flaw in this trouble shooting.

In Step 2, disable DHCP/NAT on the vt1000. Which is on the PC port of the vt1000 (192.168.102.1)

Is Step 3, Plug the wan port of the vt1000 into the back of the cable modem. Plug the vt1000 PC port into the back of the PC. Keep in mind the DHCP/NAT has been disabled in Step 2. There is no way for the PC to get an IP Address now. But the vt1000 does get a connection. Of course because its set to obtain DHCP from the ISP side.

So there for I can not go any futher.

Ideas? Or did I miss something?

Thanks much!

Posts: 1 · New Forum Member Joined: Dec 10, 2005 Posts: 1

I followed the steps outlined. Looking at the web page for my cable modem, it appears as if Charter configs the modem to learn a maximum of 1 MAC address. Assuming that in passthrough mode the Linksys router would need to receive a public IP address, this will not work because the VT1000 already has one, maxing out the learned MAC limitation in the modem. Any thought?