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Bridge Xfinity Arris gateway to Synology RT2600ac router
Hi, as part of a saga to solve a problem where my DNS suffix was "hacked" (see here: https://forums.xfinity.com/t5/Your-Home-Network/quot-Utopia-net-quot-DNS-suffix-coming-from-router/m-p/3282840#M311088), I am trying to bridge my gateway from Xfinity to another router. This was advised by an Xfinity repair tech as the only other thing left to try.
I have a third part router from Synology. I have followed the steps in the Xfinity help page about putting my gateway into bridge mode (here: https://www.xfinity.com/support/articles/wireless-gateway-enable-disable-bridge-mode). I have also done the basic Synology setup of creating an admin account for the router, wifi name, password, etc. The bridged gateway is connect via an Ethernet cable in Port 1 to the WAN port of the Synology router. My PC is connected via Port 1 of Synology.
However, I'm not getting any internet. Help forums for Synology seems to imply it would be mostly plug-and-go, so I'm confused. It is possible that I need to fill in a section labelled "ISP settings" because the new router has been unable to do this itself. Unfortunately, I don't know what it's looking for in "DHCP client", "hostname", "MAC address", etc. Which MAC, router or modem? How do I determine DHCP client? Is there something else going on?
Any suggestions? Thanks.
I have a third part router from Synology. I have followed the steps in the Xfinity help page about putting my gateway into bridge mode (here: https://www.xfinity.com/support/articles/wireless-gateway-enable-disable-bridge-mode). I have also done the basic Synology setup of creating an admin account for the router, wifi name, password, etc. The bridged gateway is connect via an Ethernet cable in Port 1 to the WAN port of the Synology router. My PC is connected via Port 1 of Synology.
However, I'm not getting any internet. Help forums for Synology seems to imply it would be mostly plug-and-go, so I'm confused. It is possible that I need to fill in a section labelled "ISP settings" because the new router has been unable to do this itself. Unfortunately, I don't know what it's looking for in "DHCP client", "hostname", "MAC address", etc. Which MAC, router or modem? How do I determine DHCP client? Is there something else going on?
Any suggestions? Thanks.
Accepted Solution
sbernie2
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18 Messages
6 years ago
Solution: Use the computer's MAC address in the ISP settings, and probably reboot things a few times.
Thanks, All!
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jweaver0312
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sbernie2
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6 years ago
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EG
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6 years ago
Is the WAN interface in the router getting assigned a public IP address from the modem ?
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jweaver0312
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6 years ago
Also, is the firmware on the Synology up to date?
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sbernie2
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6 years ago
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darkangelic
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6 years ago
Try connecting your PC directly into the Bridged gateway and see if you get an IP address (make sure to reboot both devices first before connecting).
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sbernie2
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6 years ago
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sbernie2
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6 years ago
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EG
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6 years ago
For clarity. It also disables the gateway's NAT / DHCP / routing functions. It then acts as a plain vanilla cable modem / layer 2 bridge that bridges the public IP address that Comcast's DHCP server provides to the connected client device.
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jweaver0312
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6 years ago
As a test, try setting it up behind the gateway while leaving the gateway in router mode to see if it picks anything up.
Also, try plugging the computer in again while the gateway is in bridge mode and open the connection information. It should give you the IP, Subnet Mask, etc. Take a screenshot of that screen and copy all of that information into the Synology including the MAC Address.
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sbernie2
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6 years ago
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jweaver0312
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sbernie2
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6 years ago
Any suggestions as to how I can get Ethernet? Going to wander around Synology's settings to verify there isn't an on/off button for it and try different ports on the router.
Thanks for help by the way.
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jweaver0312
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