Engineer's perspective: TCP is at Layer 4, IP is at Layer 3, VLAN is at Layer 2—layered thinking is the first step in ...

The purpose of the network layer is to help route messages between different local networks. Central to this layer is the concept of exclusive network addresses, where every terminal connected to the ...

Confused about Ethernet and the transmission control protocol/Internet protocol (TCP/IP) stack and/or suite of protocols? That’s not surprising. “This is not an easy subject to talk about. There are ...

Getting started on designing a network is a task of formidable proportions, but all the more so if you are looking to build a secure IT network. Often, IT system administrators are not fully familiar ...

The processing in a network protocol that provides the starting point and purpose of the communications session. The application layer is layer 7 of 7 in the OSI model. For example, email, Web ...

Security and networking platforms for large enterprises and data centers are rapidly evolving in sophistication and performance. In the security space, simple packet-filtering firewalls are evolving ...

Authors Bhatt and Patel explain Internet Wide Area RDMA Protocol, or iWARP, a joint project by Carnegie Mellon University and Intel Corp. and describe iWarp components and applications. The online ...

This installment in Automation World’s continuing series on key industrial network technologies clarifies what EtherNet/IP is and traces its development as a leading Ethernet-based industrial ...