Why Traditional LAN Switch Architecture Is Not Good For Software Defined Networking

by | Aug 28, 2017 | Blog

Last week, our blog covered how the US Federal Government continues to deploy traditional copper-based LANs while preparing to move forward with Software Defined Networking (SDN) functionality inside buildings and across campus. Before we tackle why Optical LAN is the best architecture for SDN, let’s look at why deploying SDN functionality as a bolt-on overlay to traditional copper-based LAN switches racked-and-stacked in datacenters and telecommunications rooms is not smart:

  • The underpinning of traditional LAN switches has only 99.9% network uptime – that’s tested and confirmed 8-hours downtime over every year
  • Complex full-functioning switches spread across buildings and campus network means distributed intelligence and management at every port – requiring local provisioning, troubleshooting and management of complicated higher-level IP and Layer-3 functions at every port
  • These access, aggregation, distribution and workgroup switches, that are complex full-functioning devices, introduce points of penetration and extreme vulnerability hurting overall security mitigation
  • Sustainability, security, reliability and operational efficiencies can all be improved by reducing numbers of switches – racks-and-stacks and meshed switch architecture is not optimal
  • Adding SDN protocols to existing full-functioning switches introduces additional security, operation and reliability complexities – plus high human touch exacerbates the problems
  • The US Federal Government Joint Interoperability Test Command (JITC) and Unified Capabilities Requirements (UCR) does not cover SDN


Businessperson holding media image of city in palm. New technologies.jpeg

John Hoover

John Hoover

Marketing Director

News Releases

Corporate news releases recognizing significant achievements of Tellabs operations, products, solutions and customers.

Case Studies

Hear directly from our customers about their successful installations, quantifiable benefits and sincere testimonials.


Up-coming conferences, seminars and webinars where Tellabs products, solutions and people will be actively participating.

Blogs & Articles

Read these short, and regularly updated, opinion pieces covering contemporary industry and technology topics.

White Papers

Download our non-vendor specific overviews meant to help readers understand an issue, solve a problem, or make a decision.


Media to educate and advocate our products, technologies or services, and offer direct insight into our customer references and user case studies.


Tellabs Optical LAN is a true enterprise centric solution that offers a better means of designing and operating networks inside buildings and across extended campuses.


Tellabs 1000 MSAP (aka T1000, DMAX, AFC, UMC) is the industry’s only Broadband Digital Loop Carrier platform that converges legacy copper and modern fiber connectivity.

Technical Assistance Center

Address your questions and challenges quickly with our award winning TAC. Flexible support options to meet your needs.

Professional Services

From small projects to migrations to full turn key services, Tellabs is here to help.


Preparation is the key to success.  Get your team ready to plan, deploy and manage your Tellabs Network. Check our our Training Curriculum today!


You worked hard in Training, now it's time to show your new credentials off to the World through our Digital Credentialing Program!

Become a Partner

The Tellabs Advantage Partner Program is designed to offer our partners exceptional opportunities to grow your business, increase revenue and gain unique solution differentiation.

Find a Partner

For our end-customers, our Tellabs Advantage Partner Program offer best-in-breed services that match specific vertical markets and geographical regions with the end-customers exact needs in mind.


Meet the Tellabs leadership team that represents diverse areas of expertise, and who are committed to exceeding the expectations of our employees, partners and customers.


Visit Tellabs’ online careers pages to see if there is a job opportunity that matches your ambitions. We offer excellent pay, benefits and career advancement possibilities.


Tellabs offer several easy options for contacting us. You can connect with us today via phone, email, online forms, or through social media channels.