Visitor
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1 Message
svg2482ac bridge mode drop internet every 3 minutes
Modem works fine in normal mode, but need to enable bridge mode to my router to allow for site to site vpn to work. As soon as I ebable bridge mode the vpn starts working, but the internet connection starts dropping packets every 3 minutes for 5-6 pings and then is fine for another 3 minutes. In addition as someone else stated in forum the wifi light still blink while in bridge mode. My previous straight cable modem worked great for several years cm700 but was taken out by lightning. I was given this as a replacement from a friend and am trying to not have to purchase a new modem. Any advice on how to fix this issue or contact someone at xfinity to explore options? I have tried to dmz my router private address and even set port forward for 500,4500,1701 will not connect unless in bridge mode.
XfinityRaul
Official Employee
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1.9K Messages
2 years ago
Good morning, @Yodamike. I'm sorry to hear you're having issues with your internet connection when activating the bridge mode on your router. Have you by any chance tried disabling and re-enabling bridge mode on? How about resetting your router to factory default settings before activating the bridge mode?
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flatlander3
Problem Solver
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1.5K Messages
2 years ago
For a site-to-site VPN if that's actually what it is, you usually specify the IPV4 local and IPV4 remote networks (IPV6 too if you really want to go nuts) on the server side when you are setting up the server. You can do it that way, but there's some caveats.
The CM700 would use a 192.168.0.1/24 subnet. The surfboard will end up using 10.0.0.1/24 subnet. *I'd add, if you are in bridge mode, you really got a wild card because you have no idea what your IP address/subnet is going to look like and it could change at any time.
Generally, you wouldn't do site-to-site just because it's an admin problem and client specific. You really only care about the remote client being able to connect to a resource on the work network, and not the work machines doing it the other way since it's a temporary connection, while also hijacking the gateway on the remote device so all traffic from that is redirected through the work network.
So, for site-to-site, you'd have to also specify:
IPV4 Local == IPv4 networks that will be accessible from the remote endpoint.
IPV4 Remote == IPv4 networks that will be routed through the tunnel, so that a site-to-site VPN can be established without manually changing the routing tables.
OpenVPN (pretty popular these days) provides examples and you can find some tutorials of the config files for this, if that's what you are using.
Perhaps that can point you in a direction of what to look for with your config.
(edited)
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