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CGM4140COM Internet lost when bridge mode enabled

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CGM4140COM Internet lost when bridge mode enabled

I "Upgraded" my Comcast Xfinity gateway modem yesterday to the CGM4140COM version that I was told would allow me to get faster service.

While I'm still not getting 1 Gigabit download that's not the issue. I prefer to use my own modem so after getting the new one setup I enabled the bridge mode and BOOM down went my internet service. I did a hard reset on the modem and set everything up again. As soon as I enabled the bridge mode again, down went my internet service.

I used my old Comcast gateway modem with bridge mode enable for years without an issue. So, what's going on? Do I need to go back to the store and get another one? If it's a firmware issue then that won't help. Does it hurt to have both the gateway modem and my own modem broadcasting at the same time? I thought I recall that it caused some issues before but I don't remember what it was. I don't do any gaming, just normal internet and streaming.

I saw a bunch of posts from 2017 on this forum on this issue but none recently. Anyone out there have the same issue with this gateway modem and a solution?

Tim 

Expert

Re: CGM4140COM Internet lost when bridge mode enabled

Did you power cycle it after you put it in bridge mode ?



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