Arris Gateway and SURFboard Setup
Arris makes Comcast/Xfinity gateways (10.0.0.1) and standalone SURFboard cable modems (192.168.100.1). Complete login guide, IP passthrough setup, and signal level reading.
Arris Product Overview
- Comcast Gateways (XB Series). TG1682G, TG3482G (XB6), TG4482 (XB7), CG7486E (XB8). Combine modem and router. Admin at 10.0.0.1.
- SURFboard Standalone Modems. SB6183, SB6190, SB8200. Cable modem only, no router. Diagnostics at 192.168.100.1. Buy to avoid monthly rental fee.
- SURFboard Modem-Routers. SBG8300, SVG2482AC. Combine modem and router. Admin at 192.168.0.1. Purchased, not leased.
- CommScope. Arris was acquired by CommScope in 2019. The SURFboard consumer brand continues under CommScope ownership.
Logging In to Comcast Arris Gateways
- 1Enable browser access for XB6/XB7/XB8
Open the Xfinity app → Wi-Fi → View Equipment → Advanced Settings → Admin Tool Online Access → toggle ON. Wait 30 seconds. Skip this for non-Xfinity Arris modems.
- 2Connect and open http://10.0.0.1
Connect to the Xfinity gateway via Wi-Fi or Ethernet. Open a browser and go to
http://10.0.0.1. - 3Log in with admin / password
Username: admin. Password: password. If the password was changed, reset it via Xfinity app → Gateway Settings → Reset Admin Password.
- 4Access bridge mode if needed
Go to Gateway → At a Glance → Enable Bridge Mode to eliminate double-NAT and pass your public IP to your own router.
How to Log In
- 1Enable browser access (XB6/XB7/XB8 only)
Open the Xfinity app → Wi-Fi → View Equipment → Advanced Settings → Admin Tool Online Access → toggle ON. Wait 30 seconds.
- 2Connect and open 10.0.0.1
Connect to the Xfinity gateway via Wi-Fi or Ethernet. Open a browser and navigate to
http://10.0.0.1. - 3Login: admin / password
Username: admin. Password: password. If the password was changed, go to Xfinity app → Gateway Settings → Reset Admin Password to restore the default.
Default Credentials
| Model | Admin URL | Username | Password |
|---|---|---|---|
Arris TG1682G (XB3) | 10.0.0.1 | admin | password |
Arris TG3482G (XB6) | 10.0.0.1 | admin | password (enable via app) |
Arris XB7 / XB8 | 10.0.0.1 | admin | password (enable via app) |
SURFboard SB8200 | 192.168.100.1 | admin | admin |
SURFboard SB6183 | 192.168.100.1 | admin | admin |
SBG8300 (modem+router) | 192.168.0.1 | admin | password |
IP Passthrough (Bridge Mode)
If you have a separate router behind the Arris gateway, you likely have double-NAT. IP Passthrough removes the gateway's NAT and passes the public IP to your router, improving gaming and remote access.
- 1Log in at http://10.0.0.1
with admin credentials.
- 2Step 2
Go to Gateway > Connection > IP Passthrough.
- 3Step 3
Set Allocation Mode to DHCPS-fixed.
- 4Select your router from the connected devices list
(shown by MAC address or hostname).
- 5Click Save.
The gateway reboots and passes the public IP directly to your router.
Default Credentials by Gateway Model
| Model | Admin IP | Username | Password | Notes |
|---|---|---|---|---|
XB8 (TG4482A) | 10.0.0.1 | admin | password | Wi-Fi 6, DOCSIS 3.1 |
XB7 (TG3482G) | 10.0.0.1 | admin | password | Wi-Fi 6, DOCSIS 3.1 |
XB6 (TG3492LG) | 10.0.0.1 | admin | password | Wi-Fi 5, DOCSIS 3.1 |
SBG10 (modem-router) | 192.168.0.1 | admin | password | Wi-Fi 5, DOCSIS 3.0 |
SB8200 (modem only) | 192.168.100.1 (diagnostics) | N/A | N/A | DOCSIS 3.1 |
SB6183 (modem only) | 192.168.100.1 (diagnostics) | N/A | N/A | DOCSIS 3.0 |
TM822G (cable modem) | 192.168.100.1 (diagnostics) | N/A | N/A | DOCSIS 3.0 |
Troubleshooting
- 110.0.0.1 rejected on XB6/XB7/XB8
Enable the admin tool in the Xfinity App first. Go to Wi-Fi > View Wi-Fi Equipment > Advanced Settings > Admin Tool Online Access and toggle it on.
- 2Credentials rejected despite correct defaults
Look for a separate "Admin Password" on the gateway label - it differs from the Wi-Fi password. If you changed it and forgot it, hold the reset button 30 seconds to restore factory defaults.
- 3SURFboard shows zero signal levels
The modem has not yet registered with the ISP. Wait 3 to 5 minutes for the DOCSIS registration process. If levels stay at zero, check all coax cable connections and contact Comcast to re-provision the modem.
Community and Support
These communities have thousands of solved threads for every configuration scenario.
- Xfinity Community: Official Comcast forums for Arris XB gateway setup, bridge mode, and SURFboard diagnostics.
Frequently Asked Questions
Should I buy a SURFboard instead of renting from Comcast?
For most people, buying pays off in under a year. Comcast charges around $14 per month to rent their gateway. An Arris SB8200 DOCSIS 3.1 modem costs about $100 to $120 and you own it outright. You also get full unrestricted admin access at 192.168.100.1 without ISP limitations. Check Comcast's approved modem list before purchasing to confirm compatibility with your service tier.
What do the T3 errors in the SURFboard event log mean?
T3 timeout errors mean the modem sent an upstream ranging request and received no response from your ISP's head-end equipment. Common causes include high upstream noise, damaged coaxial cable, corroded connectors, or a failing splitter in your home wiring. Check all coax connections, remove unnecessary splitters, and call your ISP for a line check if T3 errors are accumulating rapidly.
Disclaimer
For educational purposes only. 19216811.org is not affiliated with Arris International, CommScope, or Comcast. Arris, SURFboard, and CommScope are trademarks of their respective owners.