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Xfinity Advanced Gateway (XB6): own router and bridge mode

Can I use my own router with the Xfinity Advanced Gateway (XB6)?

Yes

Bridge Mode

  • Bridge modeYes, documented by the ISP
  • IP PassthroughNot applicable
  • Own routerYes, documented by the ISP

Checked October 26, 2026Confidence: high2 sources

Xfinity documents a Bridge Mode toggle in the gateway Admin Tool that turns off routing and leaves the modem on.

Model numbers: TG3482G, CGM4140COM · Type: Gateway (modem + router)

How to set it up

  1. Open the Admin Tool at http://10.0.0.1 from a device on your home network (you may need to enable Admin Tool access in the Xfinity app first).
  2. Sign in with username admin and the password on the gateway's bottom sticker (or your own if you changed it).
  3. Go to Gateway, then At a Glance, and click Enable next to Bridge Mode.
  4. Connect your own router to a gateway Ethernet port.

Know before you switch

  • Only one device can be connected to the gateway while in Bridge Mode (Xfinity).
  • You lose network management in the Xfinity app and WiFi Extenders; Xfinity CyberSecure is not available in Bridge Mode; if WiFi Extenders are already activated you cannot enable Bridge Mode (Xfinity).
  • Xfinity Voice, Pods, smart-home services, Zigbee devices and gateway-based speed testing are not supported with your own router (Xfinity).
  • Xfinity's bridge-mode article refers to the 'wireless gateway' generally; model numbers come from Xfinity's separate gateway overview.

How sure are we?

Confidence is high. Bridge Mode article is written for the Xfinity wireless gateway family; model mapping from Xfinity's gateway overview.

This page reports what the ISP documented on the date above. ISPs change firmware and policy; if your gateway screen differs, trust your ISP's current page.

With a specific router

Quick answers

Can I use my own router with the Xfinity Advanced Gateway (XB6)?

Yes. Bridge Mode

Does the Xfinity Advanced Gateway (XB6) have bridge mode?

Yes, documented by the ISP.

Does the Xfinity Advanced Gateway (XB6) support IP Passthrough?

Not applicable.

How sure is this answer?

Confidence: high. Bridge Mode article is written for the Xfinity wireless gateway family; model mapping from Xfinity's gateway overview. Checked October 26, 2026 against 2 ISP sources.

Sources and retrieval dates

  1. Xfinity: Use Bridge Mode on your wireless gatewayxfinity.com · read October 26, 2026
  2. Xfinity: Overview of Xfinity WiFi Gateways and Routers (model numbers)xfinity.com · read October 26, 2026

More from Xfinity (Comcast)

2 more Xfinity models are queued for research.

Check another gateway