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Enabling the Bridge Mode feature of the Comcast XFINITY® Gateways

The wireless gateway from Comcast XFINITY® puts the technology of a modem and router into one piece of equipment, creating the fastest, most reliable in-home Wi-Fi connectivity available to all rooms of the house.  However, there may be times in which you may want to use your own router.  To do this, you will have to enable the Bridge Mode feature of the wireless gateway, which turns OFF its routing capabilities while leaving the modem capabilities ON.

IMPORTANT:  Enabling Bridge Mode does NOT disable the XFINITY Wi-Fi Home Hotspot feature.  If your gateway has this feature enabled and you want to disable it, contact XFINITY or simply disable it in My Account.
 
What can a Comcast XFINITY wireless gateway do?
 
  • Creates a secure wireless home network and connects your computers and other Wi-Fi electronic products such as gaming systems, tablets and mobile phones
  • Connect up to four (4) products using a wired connection
  • Push-button setup through the Wi-Fi Protected Setup™ (WPS) feature
  • Setup advance features such as:
  • Firewall
  • Parental Controls
  • Port Forwarding
  • Port Blocking
  • Diagnostic Tools
 
The wireless gateways from Comcast XFINITY® provide the functionality of a Wi-Fi router, a DOCSIS 3.0 cable modem and voice modem in a single device.  Below is a list of the three (3) generations of wireless gateways from XFINITY.

 
GenerationModel Number
Wireless Gateway 1TG852G
TG826G
SMCD3GNV
TC8305C
Wireless Gateway 2DPC3939
Wireless Gateway 3DPC3941T
TC8717
TG1682G

To learn how to enable Bridge Mode, follow the steps below:
 
Step 1:
On a computer or a mobile device that’s connected to the gateway’s network, launch a web browser and type http://10.0.0.1 in the Address bar.
 
NOTE:  The default Username is admin and the Password is password.  The Password is case-sensitive.
 
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Step 2:
From the left-hand column, select Gateway > At a Glance.        
 
Step 3:
Toggle to Enable the Enable Bridge Mode: option.        
 
NOTE:  If you do not see Enable Bridge Mode, navigate to Gateway > Connection > IP Network and follow the on-screen instructions.  If you still do not see Enable Bridge Mode, contact Comcast to have your settings manually updated.
 
QUICK TIP:  If you want use your gateway’s router capabilities in the future, just select Disable instead.
 
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Step 4:
On the http://webadmin.comcast.net screen that appears, click OK.
 
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NOTE:  If your wireless gateway does not automatically restart, briefly press the Reset button located at the top of the gateway’s back panel.
 

Step 5:
Turn OFF the gateway and connect your router to it.
 
NOTE:  Connect an Ethernet cable from the Internet port or the Wide Area Network (WAN) port of your router to one of the Ethernet ports of the gateway.
 
Step 6:
Turn ON both the gateway and the router and check for Internet access.
 
NOTE:  If there is no Internet access, ensure that your router has been set up for Cable Internet configuration.  If you are using a Linksys router, visit the Linksys Support site for troubleshooting recommendations.

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