Data Link Layer

Contains posts on data link layer of computer networking

Connectivity methods used in Ethernet Networks

A L2 switch treats each segment connected to it as a separate collision domain.

This post gives a brief overview of the two basic methods of connecting end nodes in an Ethernet Network, namely bus and point to point connections. It illustrates each type of network with examples. It also includes an example for a hybrid Ethernet network consisting of both type of connections.

Core functionality of Data Link Layer

A packet encapsulated inside different Data Link Layer protocols

This post gives a brief overview of the core functionalities of the data link layer in the context of end to end computer communication. The post briefly discusses both the optional and mandatory features supported by data link layer protocols.