Lippis Report 185: Why Software-Defined Networking and Virtualized Networking Are Inexplicably Linked

January 29th, 2012

Computer networking vendors have been increasing the speed and port density of their Ethernet switches while reducing power draw and price per port. But while Ethernet switching hardware marches on linearly, thanks to 10, 40 and 100GbE, networking software is taking a different historical path as the pace of compute and network technology evolution has diverged, with networking lagging. Highly virtualized server deployment has broken traditional networking approaches on multiple levels, for example. In response, the industry is now developing a “virtualized infrastructure” or “stack” to add network flexibility. To close the technology gap, Software-Defined Networking (SDN) is promoted as the new “organizing principle” to deliver network software and service value. While it will be, likely, years before SDN’s organizing principles take hold, I propose that these two industry activities are inexplicably linked and phased; here’s why…

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Dormitory Wireless Is a Snap

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January 29th, 2012

By Extreme Networks

Colleges and universities have made large investments in wiring dormitories and residence halls. However, today’s students are using mobile devices with no wired Ethernet connector. Today’s laptops, tablets and smartphones rely on 802.11n Wi-Fi. Campus administrators require a simple and effective way to deliver wireless service quickly; leveraging existing wired investment to keep cost down. It is also beneficial to maintain a wired connection in the rooms, delivering both wired and wireless service. Extreme Networks Altitude 4511 uniquely enables administrators to meet student demands while achieving business goals, with a cost-effective solution that is a snap to install and can scale as needs grow.

Network Procurement: The Journey from CAPEX through TCO to Business Value

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January 29th, 2012

By CFO World

With CAPEX accounting for only 20% of the cost of a network, it is important to look beyond initial expenditures and consider TCO and the business value a network can provide. A third-party TCO comparison of a Cisco network versus other vendors illustrates that Cisco can deliver a 13% better TCO even before business benefits, such as network uptime and employee productivity are considered. Further, the Cisco Borderless Network Architecture acts as a platform for service delivery, allowing your IT organization to say “yes” to business and revenue-enhancing opportunities.

Which Network Services Need To Be Available In Modern Networks?

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January 16th, 2012

Modern corporate networks are under increasing pressure to support a wider variety of applications thanks to mobile and cloud computing, desktop virtualization plus video traffic having skyrocketed. Not only are bandwidth rates increasing from 1 to 10 to 40 GbE, but most importantly network services are needed to manage and support a different application portfolio mix and network access methods. Network services such as firewalls, WLANs, network diagnostics and monitoring plus application performance acceleration are needed to deliver a consistently excellent user experience. Cisco recently announced an upgrade to its popular Catalyst 6k with the availability of the Supervisor 2T that included re-vamped high performance service modules to deliver these network services. Goyal, product line manager at Cisco Systems joins me to discuss which network services need to be available in modern networks.

Download “A Comprehensive Testing of Cisco Systems Catalyst 6500 Sup2T” report here.

Building A Smart Virtual Network Infrastructure With IBM

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January 10th, 2012

Renato Recio, IBM Fellow & System Networking CTO

Renato Recio, IBM Fellow & System Networking CTO

There are a growing number of options to make data center networking more flexible. One option is the use of Edge Virtual Bridging or EVB, which has been standardized in project IEEE 802.1Qbg and championed by IBM, HP, Brocade, QLogic, Emulex and many others. This approach extends the Virtual Ethernet Bridge or VEB sometime called Virtual Ethernet Switch (VES) used by hypervisors to connect VMs to the data center network. Renato Recio, IBM Fellow & System Networking CTO joins me to discuss IBM’s approach to virtual network infrastructure overlays and in particular its support for Edge Virtual Bridging.

Lippis Report 184: Network Services to Differentiate Next Generation of Campus Core Switches

January 9th, 2012

During the middle of 2012, a few firms will introduce core switches for campus networking. Many of these products will be based upon merchant silicon such as HP Networking’s A10500 Series Enterprise Core Switch. While these products will boast performance advantage, they will find it difficult to win share against established firms such as Cisco’s Catalyst 6500, thanks to its investment in network services. In this Lippis Report Research Note 184, we explore the importance of network services and their role in campus network design.

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Wireless on the Wall New Converged Wireless and Wired Edge for Mobile Users

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January 9th, 2012

By Extreme Networks

Today’s mobile users require consistent Wi-Fi with high throughput, but traditional ceiling-mounted access points can make it challenging to extend 802.11n into facilities with many rooms, walls and other obstructions. The combination of the Altitude™ 4511 wallplate access point, fortified with Motorola radio technology and intelligent switches from Extreme Networks, makes it faster and easier to deploy and manage a converged wired and wireless network edge with security and high performance
that’s right where the mobile users are located for better access and service.

Top 5 Network Performance Management Mistakes and How to Avoid Them

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January 9th, 2012

By Infoblox

When asked to identify the No. 1 cause of network performance problems, IT organization typically point to denial-of-service attacks, computer viruses, fiber cuts, power outages and hardware failures-the events that receive the most publicity and media coverage. However, studies by research firms such as Gartner Group and Enterprise Management Associates indicate that over two-thirds of network issues are actually tied to seemingly simple everyday activity: the process of IT staff making network configuration changes. This whitepaper looks at the top 5 common network performance management mistakes and discusses how IT organization can mitigate them via automating network management and giving appropriate visibility to different levels of IT staff.

Real Estate Firm Boosts Bandwidth, Cuts Cost with Talari

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January 9th, 2012

By Tim Green, Network World

Chicago-based real-estate management company Equity Office ran all its voice and data traffic over a 40-branch office network via a MPLS WAN, costing some $400K per year. But when poor peak-time performance drew complaints from end users, it switched to technology that delivers more bandwidth at half the cost, delivering a 10-month ROI. The new WAN blended DSL, cable, fiber and Ethernet over copper in a single local network via WAN virtualization from Talari Networks,

Virtualization Comes to the WAN with Cost and Performance Improvements

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January 9th, 2012

WAN bandwidth, or the lack thereof, is the single largest contributor to poor application performance in branch offices resulting in reduced productivity and the inability of IT to implement their entire strategy. This is especially acute as applications are increasingly centralized in data centers and video traffic starts to dominate flows all of which put more pressure on the WAN. A new approach to wide area networking takes advantage of virtualization concepts. WAN virtualization promises to reduce WAN cost and increase performance. If your WAN utilizes T1 MPLS links at $300/month or higher and ADSL between $10-$15/ month, then you can benefit significantly from WAN virtualization as it offers 3 to 4 times the bandwidth at lower cost and in the process eliminates WAN design constraints limiting IT business leaders. Keith Morris of Talari Networks joins me to discuss WAN Virtualization. I have first-hand knowledge of how good this solution works; if you fit the above profile, then listen up.