IPoE

IPoE, or IP over Ethernet, is an approach to delivering Internet Protocol connectivity directly over Ethernet networks without employing the PPPoE (PPP over Ethernet) session setup. It is commonly used in modern fiber and cable access networks and is seen as a simpler, more scalable alternative to PPPoE.

Under IPoE, the customer premises equipment obtains IP addresses and related configuration using standard IP protocols. IPv4 addresses can be assigned via DHCPv4 or static configuration. IPv6 is typically delivered via SLAAC, DHCPv6, or a combination with Prefix Delegation. Authentication and service authorization are managed at the access edge, often through VLAN isolation, 802.1X, and/or RADIUS, rather than PPP session authentication. The Ethernet frames carry IP packets end to end with no PPP session.

Advantages of IPoE include reduced protocol overhead and network state, faster connection setup, easier provisioning, and better scalability for large-scale fiber deployments. It aligns well with IPv6 deployment strategies through Stateless Address Autoconfiguration and Prefix Delegation, while still supporting IPv4 through DHCP.

Relation to PPPoE: In PPPoE, a PPP session is established over Ethernet, with PPP negotiation and session maintenance. IPoE eliminates those steps, relying on standard IP mechanisms and separate authentication/ accounting methods. Some networks support both approaches to maintain compatibility during transitions.

Deployment and usage: IPoE is widely used by ISPs in several regions, particularly in Asia for fiber services. It is not governed by a single formal standard but rather represents an architectural approach with implementations that vary by operator and equipment vendor.

Security and considerations: With IPoE, security relies on access control mechanisms such as 802.1X, firewalls at the customer edge, and proper DHCPv6 safeguards. Migration from PPPoE to IPoE may require changes to CPE configuration and network provisioning.