Networking: Page

GENEVE primer: The answer to network virtualization interoperability?

The GENEVE network encapsulation protocol is more flexible than VXLAN and NVGRE. Will it bring interoperability to network virtualization overlays?

By David Jacobs • July 10, 2014

How to buy: Assessing next-gen firewalls

Is there a next-gen firewall in your future? Our How to Buy guide offers advice you need to ensure you purchase the best platform to meet your needs.

By Dave Shackleford • July 10, 2014

Don’t ignore this great wireless training resource

Online wireless support communities are a great resource for IT professionals who need their questions answered quickly.

By Lee Badman • July 9, 2014

Hyper-V networking: The three virtual switches that fuel connectivity

In this Hyper-V networking primer, learn about the three virtual switches behind Microsoft virtualization connectivity.

By Brien Posey • Feb. 6, 2014

Your next job may be ‘network programmer’: What you’ll need to know

SDN brings flexibility to networking, but this will require engineers to gain new skills in order to fill the emerging role of network programmer.

By Teren Bryson • Nov. 18, 2013

Are there alternatives to the OpenFlow protocol?

Jason Edelman explains OpenFlow protocol alternatives and what's important in determining which southbound protocol will work for you.

By Jason Edelman • Aug. 29, 2013

News briefs: Red Hat OpenShift Online goes live; Lenovo pushes cloud

This week, Red Hat's OpenShift Online rolls out for commercial use, Lenovo enters the cloud market and NTT deploys VMware network virtualization.

By Madelyn Stone, Editorial Assistant • June 13, 2013

VMware NSX pop quiz: Do you know NSX’s network virtualization features?

Test your knowledge of VMware NSX, which evolved rapidly out of VMware's homegrown and acquired network virtualization technologies.

By Meredith Courtemanche • June 12, 2013

What is Ethernet-dedicated Internet?

Ethernet-dedicated Internet is a continuous, high-bandwidth way for enterprises to connect their LANs to the public Internet and to streamline the performance of their WAN.

By Sally Johnson • June 3, 2013

Primer: A new generation of programmable ASICs

Programmable application-specific integrated circuits allow the data plane of switches to support new technologies, like software-defined networking.

By Sally Johnson • April 29, 2013

Ways to mirror vSphere networking with VMware Virtual Network Editor

Not every VMware vSphere networking option is available in Workstation, but it's a useful tool for users to mirror the ESXi network for tests.

By Sander van Vugt • April 9, 2013

Migrating from a standard switch to VMware vDS with no downtime

Replacing standard switches with VMware vDS will broaden your virtual network's capabilities. Learn how to migrate switches without powering down VMs.

By Rob Bastiaansen • March 27, 2013

How to plan for a campus core switch refresh: Basic requirements

Network architects and engineers discuss the features and functions they look for when planning a campus core upgrade.

By Sally Johnson • March 18, 2013

Centralized vs. decentralized SDN architecture: Which works for you?

Two SDN architecture models -- centralized and decentralized -- have much in common, but key differences center on the use of the OpenFlow protocol.

By Tom Nolle • March 12, 2013

Microsoft makes improvements to SharePoint workflows

The first thing to know about SharePoint workflows is that SharePoint 2013 actually contains two separate workflow platforms.

By Brien Posey • Feb. 14, 2013

Will we ever need 400 Gigabit Ethernet enterprise networks?

With 40 and 100 Gigabit Ethernet so new, what could possibly drive the need for 400 Gigabit Ethernet in the enterprise? Hint: It’s not just the WAN.

By Tom Nolle • Nov. 29, 2012

Using vSphere distributed switches for virtual networks

VMware's vSphere distributed switch is shared between hosts in a network, unlike standard switches. Here's how to create and use distributed switches.

By Sander van Vugt • Oct. 18, 2012

How do I disable VPN passthrough? What are the pros and cons to disabling it?

In this Ask the Expert response, Rainer Enders explains how to disable VPN passthrough and what the benefits and drawbacks are.

By Rainer Enders • April 4, 2012

Network time synchronization for VMware ESXi: Timing is everything

Time is money, and in your VMware infrastructure, network time synchronization ensures that your ESXi hosts are timed to work correctly with other hosts and services.

By Sander van Vugt • Jan. 24, 2012

Mobile network management applications offer monitoring on the go

As smartphone and tablet devices in the enterprise grow, vendors are developing mobile network management apps for iOS and Android, offering accessible views into the network.

By Rachel Shuster, Rachel Shuster, Associate Editor • Jan. 4, 2012

ADSL IP VPN advantages and disadvantages

Find out the ADSL IP VPN advantages and disadvantages before upgrading your enterprise wide area network (WAN) link to this telecom service.

By Chris Partsenidis • July 28, 2011

Next-generation firewalls not ready to replace all legacy firewalls

Application-aware firewalls enhance network security by offering deeper visibility, but enterprises will hang on to old-style firewalls.

By Shamus McGillicuddy • Sept. 23, 2010

Networking vendors aim to improve server virtualization security

Server virtualization security is no longer guaranteed by creating physical security zones for different classes of virtual machines on host servers. Networking and network security vendors are introducing virtual security products that apply security controls and policies directly to virtual machines within virtual hosts.

By Shamus McGillicuddy • Sept. 16, 2010

Using virtual appliances and desktop virtualization

IT organizations are implementing desktop virtualization and virtual appliances for virtual WAN optimization and virtual application delivery, but there are challenges to overcome along the way.

By Jim Metzler, Ph.D. • Aug. 17, 2010

VLANs versus IP subnets: Why use a VLAN over IP subnetting?

A virtual local area network (VLAN) is better than IP subnetting because its advantage is security. Learn what a VLAN is and how it differs from creating IP subnets, in this expert response from our networking fundamentals expert.

By Chris Partsenidis • Feb. 4, 2009