I think it's your second one (used to be called the "modem" in the modem→router→ pc setups of yore).

> CPE generally refers to devices such as telephones, routers, network switches, residential gateways (RG), set-top boxes, fixed mobile convergence products, home networking adapters and Internet access gateways that enable consumers to access providers' communication services and distribute them in a residence or enterprise with a local area network (LAN).

https://en.wikipedia.org/wiki/Customer-premises_equipment

Given that the Wikipedia definition of CPE includes routers, I don't see how calling it CPE precludes it being a router, as the poster claimed:

> That's not a router, that's a CPE, and one without IPv6 support

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bombcar 3 hours ago | parent | next [-]

I think a CPE could (be/include) a router, but usually it refers to the demarc between the provider's network and the customer's (no matter who owns/manages it).

For a Linux box to be a true CPE you'd likely need somewhat of a specialized card, one that can communicate directly to the next device up the line (e.g, take commercial fiber or cable in, ISDN modem, etc).

If it just shoots out ethernet into some other box next to it, it's likely not a CPE.

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Hikikomori 2 hours ago | parent [-]

Plenty of isps that provide internet over regular ethernet. But it's a ye olde telecom provider term that referred to the phone, that you also didnt own yourself. Doesn't always apply cleanly these days.

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bombcar 2 hours ago | parent | next [-]

Usually it's "something else" that turns into RJ45 (as ethernet has a maximum length) - now if you're in a datacenter you likely can get raw RJ45 Internet).

	▲	Hikikomori 2 hours ago \| parent [-]
		Fiber uses ethernet as well. Though ethernet fiber to the building and rj45 inside is common too.

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BenjiWiebe 2 hours ago | parent | prev [-]

Really? They have buried Cat5/6 cable speaking Ethernet coming onto your property?

I've never heard of that before. How does that work? Your ISP would always have to have some infrastructure within 100 meters of your router then.

	▲	dekhn 2 hours ago \| parent \| next [-]
		In my case I have AT&T Fiber that IIUC carries ethernet frames encoded optically.
	▲	Hikikomori 2 hours ago \| parent \| prev [-]
		No. But fiber to the building and rj45 inside is common here. Or fiber to each apartment. All regular ethernet.

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landdate 3 hours ago | parent | prev [-]

I mean the wikipedia literally states:

From my understanding any type of device that is used to extend or facilitate provider services is a CPE. So a router just acting as an extender would still be a cpe, as would a modem, as would anything that is on the customer side and facilitates provider services. Only situation a router wouldn't be a cpe is if it was just for a local lan network.