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tardis13
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4 Messages

Friday, December 24th, 2021 10:24 PM

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How to use an Ethernet Switch

Hi.

I have a Voice and Data Modem TECHNICOLOR CGM4140COM. 

It has two ports. One I use for my mobile network extender.

Into the other port, I would like to connect 2 notebook PCs using ethernet cables to connect to the Internet. One is my personal PC. The other notebook I use for work. 

I plugged a Netgear Fast Ethernet Switch FS605 v2 into the modem. I plug one PC into the switch and it works fine. But one minute after I plug the second PC into the switch, both lose Internet connection. 

What can I do to use my 2 notebooks on ethernet cables with my modem?

Thank you for your help.

Question

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Updated 

3 years ago

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brianhj

Visitor

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2 Messages

3 years ago

Fast Ethernet is pretty slow... 100mbs. I'd definitely get a gigabit switch they are really cheap. As to your issue are both systems connected to the switch set to DHCP? 

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tardis13

Visitor

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4 Messages

3 years ago

Thanks - yes. Both DHCP.

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CCEthan

Official Employee

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1.4K Messages

@tardis13. Are you still having the issue? I also recommend getting a newer Gigabit switch, but have you tried setting static IP on both PC's? Does it happen on both ethernet ports of the gateway? 

I no longer work for Comcast.

I am an Official Xfinity Employee.
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3 years ago

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tardis13

Visitor

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4 Messages

Yes, I still have the issue on both ports, both DHCP or static.

The devices both connect at first but then 60 seconds later, both disconnect and revert to WiFi.

(edited)

3 years ago

0

XfinityAntoine

Official Employee

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1.4K Messages

Sounds like you may need a new modem. Either way I'd like to a look at your account to see if we can't figure this out. In order to get started can you please send me a private message to Xfinity Support with your full name and full address by clicking the chat icon in the top right?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

3 years ago

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tardis13

Visitor

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4 Messages

Hi XfinityAntoine. Sent the message. Thanks for looking into this for me.

(edited)

3 years ago

0

EG

Expert

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110.2K Messages

@tardis13

To send a direct message [private message]:


 
   Click "Sign In" if necessary
 
   Click the "Direct Message" icon  in the upper right corner or https://forums.xfinity.com/direct-messaging 
 
   Click the "New message" (pencil and paper) icon
 
   The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
 
   - As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
 
   - An "Xfinity Support" graphic replaces the "To:" line.
 
   Type your message in the text area near the bottom of the window
 
   Press Enter to send it.

[Permission from and credit given to BruceW]

 

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

3 years ago

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user_5c870a

Visitor

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1 Message

3 years ago

I'm having this issue too, (Model: TG4482A).  I'm using a Lynksys 2016 GB switch, (ya it's old but didn't have this issue with my former internet provider).  I've tried both static and DHCP IP's and read somewhere to use port #2 on modem, tried that as well, little more stable, but still occasionally lose connection. 

Static IP's will occasionally lose internet, (internal traffic continues to work) and DHCP will lose IP address and internet and revert to 169... address.

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