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F5 Agility 2015 EMEA – ACI with F5 & Cisco

Ravi Balakrishnan, Cisco Sr. Marketing Manager, discusses the Application Centric Infrastructure and how F5 & Cisco, former fierce competitors, have come together in a joint integrated solution to solve many customer challenges. Cisco’s SND... Read more
Average Rating: 5.0
4 Reviews

Verify, but Never Trust?

Much is being written lately about so-called "Zero Trust Model" security, which prompts me to ask, "Since when did we security folk trust anyone?"  On the NIST site, you'll find a thorough report NIST commissioned from... Read more
0 Reviews

Tweaking Timeouts

#webperf #fast #mobile Alternative title: Stop Blaming the Network I have a weakness for a particular Android game that shall remain nameless (to protect the innocent, of course). It frequently complains that I have "a poor networ... Read more
0 Reviews

Results of My Completely Unscientific Internet Survey on the word "Network"

Q: What do you think when you hear the word "network"?   Which is about what I expected - an emphasis on the lower layers (2-3) of the stack, some crossover at the transport layer (4) and diminishing mindshare at the higher layer... Read more
0 Reviews

SDN Network Models

#SDN models: switches and overlays As with most new exciting (read: hyped) technology there's always some initial fragmentation that occurs in the market. Everyone wants to have their fingers in the newest pie and from that comes wha... Read more
0 Reviews

Cloud: Commoditizing End-Users

It's not just commoditization of business functions (SaaS) or IT infrastructure (IaaS) - it's the users, too.   Prioritization. It's something that's built into nearly every technology, particularly that which service... Read more
0 Reviews

The Colonial Data Center and Virtualization

No, not colonial as in Battlestar Gallactica or the British Empire, colonial as in corals and weeds and virtual machines I was out pulling weeds this summer – Canada thistle to be exact – and was struck by how much its root system reminded me of... Read more
0 Reviews

Big-IP and ADFS Part 4 – “What about Single Sign-Out?”

Why stop at 3 when you can go to 4? Over the past few posts on this ever-expanding topic, we’ve discussed using ADFS to provide single sign-on access to Office 365. But what about single sign-out? A customer turned me onto Tristan Watkins’ blog... Read more
Average Rating: 5.0
4 Reviews

The Next IT Killer Is… Not SDN

Neither was #cloud or #virtualization or Web 2.0 or … Every time there's a major technological shift in operational models you can hear the hue and cry from across the land of IT: the sky is falling. Our jobs are in jeopardy. Technology... Read more
0 Reviews

SDN is Network Control. ADN is Application Control.

#SDN is disruptive but it's not destructive, especially not at layer 4-7 In the wake of VMware's acquisition of SDN notable Nicira there was a whole lot of behind-the-scenes scrambling to understand the impact to the entire networking... Read more
0 Reviews

Migrating from Exchange 2007 to 2010 with Access Policy Manager

When it comes to upgrades, implementations, migrations, etc., you can plan for months. You can test, test, and then test some more. You can cross every “i” and dot every “t”. But at the end of the day, it all comes down to the end-user... Read more
1 Review

Applying ‘Centralized Control, Decentralized Execution’ to Network Architecture

#SDN brings to the fore some critical differences between concepts of control and execution While most discussions with respect to SDN are focused on a variety of architectural questions (me included) and technical capabilities, there’s another... Read more
0 Reviews

QoS without Context: Good for the Network, Not So Good for the End user

#fasterapp #webperf #ado One of the most often mentioned uses of #OpenFlow revolves around QoS . Which is good for network performance metrics, but not necessarily good for application performance. In addition to issues related to virtual... Read more
0 Reviews

Cyclomatic Complexity of OpenFlow-Based SDN May Drive Market Innovation

#openflow #sdn Programmability and reliability rarely go hand in hand, especially when complexity and size increase, which creates opportunity for vendors to differentiate with a vetted ecosystem I’m reading (a lot) on SDN these days. That means... Read more
0 Reviews

Big-IP and ADFS Part 3 – “ADFS, APM, and the Office 365 Thick Clients”

Okay, so I never mentioned a part 3. But, the topic is just too much fun to let go. Besides, we have one more important section to cover. First, let’s recap parts one and two. In part one we discussed load balancing the ADFS and ADFS proxy farms... Read more
1 Review

SDN, OpenFlow, and Infrastructure 2.0

#infra2 #openflow #sdn #devops As cloud recedes, it reveals what it hid when the hype took it big: a focus on the network. Like cloud two or three years ago, SDN and OpenFlow dominated the talk at Interop. During a show that’s (in theory at least)... Read more
0 Reviews

WILS: The Many Faces of TCP

#fasterapp Veno. Hybla. CTCP. HSTCP. Fast TCP. Not familiar with these variants? Read on… Anyone who’s involved with web application performance – either measuring or addressing – knows there are literally hundreds of RFCs designed to improve... Read more
0 Reviews

The Four V’s of Big Data

#stirling #bigdata #ado #interop “Big data” focuses almost entirely on data at rest. But before it was at rest – it was transmitted over the network. That ultimately means trouble for application performance.    The problem of... Read more
0 Reviews

F5 Friday: Are You One of the 61 Percent?

#centaur #40GBE #cloud That’s those that “are still not fully confident in their network infrastructure’s preparedness” for cloud … Throughout the evolution of computing the bus speed, i.e. interconnects, between various components on the... Read more
0 Reviews

Big-IP and ADFS Part 2 - APM: An Alternative to the ADFS Proxy

So let’s talk Application Delivery Controllers, (ADC).  In part one of this series we deployed both an internal ADFS farm as well as a perimeter ADFS proxy farm using the Big-IP’s exceptional load balancing capabilities to provide HA and... Read more
Average Rating: 4.2
5 Reviews

Network versus Application Layer Prioritization

#fasterapp Why SPDY and similar techniques could succeed where coloring TOS bits failed Back in the day, before VoIP was common and we were all chatting over Skype, there was a very real concern about how to ensure the network could support it.... Read more
0 Reviews

Complexity Drives Consolidation

The growing complexity of managing more users from more places using more devices will drive consolidation efforts – but maybe not in the way you think.  Pop quiz time. Given three sets of three items each, how many possible combinations... Read more
0 Reviews

Big-IP and ADFS Part 1 – “Load balancing the ADFS Farm”

Just like the early settlers who migrated en masse across the country by wagon train along the Oregon Trail, enterprises are migrating up into the cloud. Well okay, maybe not exactly like the early settlers. But, although there may not be a mass... Read more
Average Rating: 5.0
5 Reviews

The Conflation of Pay-as-you-Grow Hardware with On-Demand

#cloud Today’s post is brought to you by the Law of Diminishing Returns The conflation of “pay-as-you-grow” with “on-demand” tends to cause confusion in the realm of networking and hardware. This is because of the way in which networking vendors... Read more
0 Reviews

Network Virtualization Reality Check.

There are quite a few pundits out there that would like to convince you that a purely virtual infrastructure is the wave of the future. Most of them have a bias to drive them to this conclusion, and they’re hoping you’ll overlook it. Others just... Read more
0 Reviews