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The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating Point-to-Point Protocol (PPP) frames inside Ethernet frames. It appeared in 1999, in the context of the boom of DSL as the solution for tunneling packets over the DSL connection to the ISP's IP network, and from there to the rest of the Internet.
Internet Protocol over Ethernet (IPoE) is a method of delivering an IP payload over an Ethernet-based access network or an access network using bridged Ethernet over Asynchronous Transfer Mode (ATM) without using PPPoE. It directly encapsulates the IP datagrams in Ethernet frames, using the standard RFC 894 encapsulation.
The original PoE standard, IEEE 802.3af-2003, [1] now known as Type 1, provides up to 15.4 W of DC power (minimum 44 V DC and 350 mA) [2] [3] on each port. [4] Only 12.95 W is guaranteed to be available at the powered device as some power dissipates in the cable.
Static routes, connected routes, and routes from dynamic configuration protocols can be redistributed by dynamic routing protocols. For instance a router may have a static or connected route for a local network segment, which is then redistributed over dynamic routing protocols to enable connectivity to that network.
RFC 2516 describes Point-to-Point Protocol over Ethernet (PPPoE) as a method for transmitting PPP over Ethernet that is sometimes used with DSL. RFC 2364 describes Point-to-Point Protocol over ATM (PPPoA) as a method for transmitting PPP over ATM Adaptation Layer 5 , which is also a common alternative to PPPoE used with DSL.
It uses dual-stack PPPoE with CGN for IPv4. Only /64 prefix size is available via DHCP-PD. T-Mobile Czech Republic have deployed IPv6 on residential xDSL lines since 2014. [109] It uses dual-stack PPPoE with one public static IPv4 address and /56 IPv6 prefix delegated via DHCP-PD.
Many Unix-like systems include a program called dhclient to handle this dynamic configuration. Given a relatively static or simple dynamic configuration, static configuration modified by dhclient works well. However, as networks and their topologies get more complex, a central manager for all the network configuration information becomes more ...
It also avoids the issues that PPPoE suffers from, related to sometimes needing to use an IP MTU of 1492 bytes or less, lower than the standard 1500 bytes. The use of PPPoA over PPPoE is not geographically significant; rather, it varies by the provider's preference.
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