From the CEO of Entuity

Michael Jannery

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Top Stories by Michael Jannery

Some of the network gear vendors cast a wary look at network management vendors, particularly those who do continual, automatic discovery of the network inventory and connectivity.  Why? We know what’s actually out there, and what’s actually being used. We had one customer in the insurance industry who was due to renew their maintenance agreement with a large, well-known network gear vendor. The typical scenario was to be handed a spreadsheet by the salesperson, listing the serial numbers of the network devices they had purchased, together with a summary of maintenance charges. Prior to the meeting, the network manager ran an inventory report sing Entuity, and – not uncommonly – discovered that the list of devices under maintenance as tracked by the network hardware vendor did not match the list of devices currently running.  In fact, they were considerably off. 30,... (more)

Into the Wild Network By @MJannery | @CloudExpo [#SDN #Cloud]

Imagine you are dropped off in the middle of a jungle, without any familiarity of what to eat, where to drink, or how to build a fire and shelter. Were you ready? Do you survive? In an environment that can, quite literally, eat you alive, it helps to be equipped with the right tools and knowledge for anything that may come your way. In fact, it's hard to prepare yourself for any task that is constantly evolving, always growing, and undoubtedly daunting. Today's IT professionals have to be on the lookout for any way to prepare and learn about new technological advances as they im... (more)

Software Defined Networking | Part 2 By @MJannery | @CloudExpo [#SDN #Cloud]

In our initial part in this blog series on SDN, I gave a quick background overview.  This part of the series will cover overlay SDN and underlay SDN. SDN technologies are broadly split into two fundamentally different paradigms - "overlay" SDN and "underlay" SDN.  With overlay SDN the SDN is implemented on top of an existing physical network.  With underlay SDN, the fabric of the underlying network is reconfigured to provide the paths required to provide the inter-endpoint SDN connectivity. Overlay SDN (e.g., VMware NSX and Contrail) use tunneling technologies such as VXLAN, STT ... (more)

Software Defined Networking | Part 5 By @MJannery | @CloudExpo [#SDN #Cloud]

In part 4 of our series on SDN, I discussed some of SDN's most commonly asserted benefits. Here I'll look at the drawbacks, the majority of which are organizational or financial and not technical.  The most commonly cited reasons for actively not deploying SDN are: Staffing SDN requires significant staff re-training or recruitment.  There are very few staff with proven SDN deployment / management skills making recruitment difficult and therefore re-training of existing staff is necessary.  Of course having retrained those staff, their retention with their new, highly desirable,... (more)

Software Defined Networking: Part 4 By @MJannery | @CloudExpo #SDN #Cloud

In part 3 of our SDN series, I covered virtual versus physical infrastructure.  This next segment will cover the three most commonly propounded benefits of SDN: efficiency, agility and security. Efficiency Early, hyper-scale pioneers of SDN such as Google astounded the networking community with the increased network utilization they achieved using SDN.  The industry norm for WAN link utilization is between 30% and 50%, whereas, by deploying SDN, Google drove utilization up to 95% (without impacting critical flows, losing traffic, etc.).  This is primarily due to SDN’s holistic vi... (more)