In networking and communications, the formats, codes and procedures for transmitting a unit of data (frame, packet) from one node to another. Known as a "layer 2 protocol," the data link protocol ...

On a shared medium, data link addresses are unique within the medium. In the enterprise, data link protocols provide functions such as finding a path and managing parallel paths.

Layer 2 functions occur before an IP-based connection is ever established, so all of your Layer 3 troubleshooting skills, tools, and protocols are useless here.

A protocol stack is a prescribed hierarchy of software layers, starting from the application layer at the top (the source of the data being sent) to the data link layer at the bottom (transmitting ...

What protocol does my ISP (Verizon) use at the data link layer to transport them? Google has not been much help so far.

Vitalik Buterin, a member of the Ethereum Foundation's executive board, once pushed "layer-2" networks as a way to provide faster and cheaper transactions. Now he's got ideas for "enshrining" some ...