How to Hook a Second Cable Modem to Charter Internet

Add a second Charter cable modem to double your Internet bandwidth.

Hooking up a second cable modem to the Charter cable Internet service requires two separate accounts. Each account allows for a single cable modem, which is identified by the modem's Media Access Control, or MAC, address. To use the bandwidth of both cable modems concurrently, you must have a router that supports load-balancing two Wide Area Network, or WAN, connections. When a computer or device on your network tries to access the Internet, the speed is automatically balanced between both cable modems.

Things You'll Need

• Coaxial cable splitter
• Coaxial cables
• Dual-WAN router
• Ethernet cables

Instructions

1. Establish a second account with Charter.

2. Connect a coaxial cable splitter to the cable line and connect two coaxial cables between each cable modem and the splitter.

3. Connect each cable modem's Ethernet port to one of the "WAN" ports on the dual-WAN router.

4. Power on both cable modems and wait 60 seconds for them to synchronize the signal.

5. Power on the dual-WAN router and wait 30 seconds for it to initialize. Both cable modems are automatically detected and load-balanced.

6. Connect the rest of the network to the dual-WAN router by connecting Ethernet cables to the router's LAN ports. Internet requests from the network are automatically load-balanced across both cable Internet connections.

Resources

• Cisco: RV042 Dual WAN VPN Router