The OSI Model

  • July 03, 2013 03 Jul'13

    F5 training effort with University of Phoenix to boost ADC skills

    F5 Networks and the University of Phoenix team up for vendor-neutral application delivery controller training.

  • December 22, 2011 22 Dec'11

    The answer to the top 5 virtualization problems

    Transitioning to a virtualized network can be challenging for network engineers, despite the advantages. Understand these top five virtualization problems and how to handle them.

  • December 22, 2011 22 Dec'11

    vCloud and VEPA: Neither answer is a winner

    vCloud and VEPA fail to address the virtualization networking problem, as both are deemed proprietary and don’t enable networking functions within the vSphere environment.

  • December 22, 2011 22 Dec'11

    When physical security breaches are the problem

    Network engineers are so busy dealing with intrusion prevention and firewalling that they forget about physical security breaches. Blogger Ethan Banks has some advice.

  • December 22, 2011 22 Dec'11

    Cisco upgrades the Catalyst 6500…but some wonder why

    The Cisco Catalyst 6500 upgrade announced this year didn't excite everyone as expected. Blogger Greg Ferro wonders why Cisco didn't stay focused on the Nexus line instead.

  • December 22, 2011 22 Dec'11

    Need 10 GbE optimization? Hardware is not the solution

    10 GbE brings speed, but network latency is still an issue. The answer to 10 GbE optimization can't be found in increasing hardware. Our blogger says it's about the application.

  • December 22, 2011 22 Dec'11

    Cius vs. the iPad: Why bother comparing?

    Cisco launched its Cius tablet this year, which focuses on enterprise apps, desktop virtualization and network management, but one blogger says he'd rather have an iPad.

  • December 22, 2011 22 Dec'11

    Can Virtual Extensible LAN solve the VLAN problem?

    The Virtual Extensible LAN (VXLAN) protocol could mean the ability to spin off many more VLANs across dispersed data centers. So why does blogger Ivan Pepelnjak take issue?

  • December 22, 2011 22 Dec'11

    A data center networking standard that's not so TRILLing

    In the quest to dump the spanning tree protocol and move to a flat network, the TRILL data center networking standard has taken center stage, but one blogger takes issue.

  • December 22, 2011 22 Dec'11

    Top ten 2011 network blogger opinions: Do you agree?

    Network bloggers have a lot to say, but do we care? We should. In the top ten network blogger opinions of 2011, our experts poke holes in TRILL, OpenFlow and 10 GbE optimization.

  • January 10, 2007 10 Jan'07

    Network security -- Taking the layered approach

    Network security is tricky business. In his new book Hack the Stack, author and security expert Michael Gregg outlines how to secure the network using the OSI model.

  • December 07, 2004 07 Dec'04

    HP plans to 'flatten' the network core

    HP not only previews next year's new family of 10 GigE stackables, but also offers a glimpse at its new strategy that emphasizes edge intelligence and eliminates redundant functionality in the network core.

  • December 06, 2004 06 Dec'04

    Alcatel lures customers preparing for 10 GigE

    Alcatel's new line of multipurpose Layer 3 stackables is intended to ease the 10 Gigabit Ethernet transition, but reasonable features at a modest price may not be enough to steal market share from Cisco.

  • November 22, 2004 22 Nov'04

    What is OSI?

    Need a refresher on the OSI model? This overview explains the concept and defines each network layer.

  • August 26, 2003 26 Aug'03

    Click for details on the Network Performance Pioneer Award

    Learn how to nominate your team for this award.