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Can Main Ethernet from Cable Modem be Split?
juryman Posts: 49 Contributor
edited November 2022 in Home Networking Oct 12, 2022
I am looking to replace my home router with a newer model. I would like to setup the new router but not take down my entire home network in the process. Since the cable modem only has one main ethernet out, can I purchase a ethernet splitter and split the connection? This would allow me to connect both the old router and new router to the cable modem at the same time. This way I can keep my home network running while I configure the new router.
HT_Greenfield Posts: 278 Contributor
There's no way to replace a router without disrupting the LAN. Even if you split the WAN Ethernet interface, there's no such of a thing as TCP/IP simultaneous dual-address packetology.1
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