> For the complete documentation index, see [llms.txt](https://ccie.nyquist.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp.md).

# PPP

- [PPP 101](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-101.md)
- [PPP Authentication - PAP](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-pap.md)
- [PPP Authentication – CHAP](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-chap.md)
- [PPP Authentication – EAP](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-authentication-eap.md)
- [PPP Multilink](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/ppp-multilink.md)
- [PPPoFR – PPP over Frame Relay](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/pppofr-ppp-over-frame-relay.md)
- [PPPoE – PPP over Ethernet](https://ccie.nyquist.eu/layer-2-technologies/layer-2-wan-protocols/ppp/pppoe-ppp-over-ethernet.md)