Application Delivery Blog

Virtual Load Balancers | Hardware in a Software Disguise

avatar Grant Swanson
Posted on May 19, 2017 6:00:00 AM

When it comes to load balancers you have probably heard terms such as, "Software Defined Hardware" (yes, they actually said that!) or "Software First" from vendors like F5 Networks and Citrix NetScaler. What they are really telling you is that they understand the importance of software, but need to keep selling you hardware. 
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Topics: Virtual Load Balancer, Load Balancing, SDN

Network Operations | Simplify with Cisco ACI and Avi Networks

avatar Chandra Sekar
Posted on Nov 10, 2016 9:04:04 AM

This blog post originally appeared in Cisco's Data Center Blog site  Software load balancers are making a big splash in recent times driven by developer-centric and application-led initiatives. Adding to this growing space of excitement is the up and coming Avi Networks (a Gartner Cool Vendor in Enterprise Networking 2016) which makes load balancers cool again!
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Topics: SDN, SDDC, Software Load Balancer, Network Virtualization, Software Defined Networks, ADC, cisco, Case Study

Software Defined Networking | The Change Control Blast Radius

Geoffrey Slater
Posted on Apr 27, 2016 12:00:00 PM

A minor change control has been approved, impacting only a small section of the network. However, the change is performed on shared network infrastructure such as firewalls or load balancers. Now comes implementation time, which is the ideal time for application usage but miserable for operators that value their weekends or evenings. Preparation is everything, the appropriate IT staff is on hand to conduct the change and the right business validators set to ensure success. Nothing unusual here and then…BAM! Something goes wrong. The NOC is inundated with calls and management system is lighting up like a Christmas tree.
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Topics: Software Defined Networks, SDN, Software Load Balancer, change control

Software Load Balancers and Cloud Environments | Avi Networks

Abhi Joglekar
Posted on Apr 5, 2016 6:30:00 AM

 The Hardware Load Balancer Brick Wall Last month at Networked Systems Design and Implementation (NSDI)  conference, Google lifted the covers off Maglev, their distributed network software load balancer (LB) [1]. Since 2008, Maglev has been handling traffic for core Google services like Search and Gmail. Not surprisingly, it's also the load balancer that powers Google Compute Engine and enables it to serve a million requests per sec without any cache pre-warming [2]. Impressive? Absolutely! If you have been following application delivery in the era of cloud, say over last 6 years, you would have noticed another significant announcement at Sigcomm ‘13 by the Microsoft Azure networking team. Azure runs critical services such as blob, table, and relational storage on Ananta [3], its home-grown cloud scale software load balancer on commodity x86, instead of running it on more traditional hardware load balancers. Both Google and Microsoft ran headlong into what can be best described as “the hardware LB brick wall”, albeit at different times and along different paths in their cloud evolution. For Google, it started circa 2008 when the traffic and flexibility needs for their exponentially growing services and applications went beyond the capability of hardware LBs. For Azure, it was circa 2011, when the exponential growth of their public cloud led to the realization that hardware LBs do not scale and forced them to build their own software variant. So, what is this “hardware LB brick wall” that these web-scale companies ran into?
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Topics: ADC, SDN, Closed-Loop Application Delivery, Architecture, SSL, Analytics, Application Delivery Controller, Microservices, metrics, Software Load Balancer

Application Delivery Beyond Load Balancing | Stay Away From Hardware

avatar Swarna Podila
Posted on Mar 4, 2016 11:07:46 AM

It’s been two weeks (since I joined Avi) or four Silicon Valley weeks!  And if you imagine a proverbial “firehose”, I think it is safe to say Avi unleashes at least 10x more!  So yes, these two weeks have been like a whirlwind for me.
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Topics: OpenStack, ADC, SDN, Avi Networks, Application Delivery Controller, Microservices

Out of Sight, Out of Mind? With Security, That’s Out of Your Mind.

avatar Nathan McMahon
Posted on Aug 4, 2015 5:00:00 AM

INTRODUCTION:  I’m pretty certain that whoever first uttered the phrase “anything easy isn't worth having” was no IT administrator. This certainty derives from the seemingly path-of-least-resistance attitude that many enterprises hold when it comes to enforcing stringent levels of encryption security for public infrastructure including their websites. We’ve previously blogged on the excuses many enterprises make for their lax encryption practices, but it’s worth examining what I believe is the primary culprit for this: lack of visibility and insights into their security profiles.
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Topics: SDN, SSL, Analytics, Security, Virtual Service

Cloud Services | Crossing the Cloud Chasm | Avi Networks

avatar Dhritiman Dasgupta (DD)
Posted on Aug 24, 2014 9:50:00 AM

With any disruptive innovation, there will always be innovators and early adopters who eagerly jump on the bandwagon. Today, we’re seeing more and more businesses move to the cloud as users take advantage of its utility-based model and associated economic benefits. So why isn’t everyone “crossing the chasm” and what will it take to persuade the late majority and laggards to move to the cloud?
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Topics: cisco, private cloud, OpenStack, cloud, Tweet, VMware, vCenter, load balancer, ADC, SDN, application delivery, disruptive innovation

Cloud Application Delivery | The Benefits of a Cloud ADC

avatar Dhritiman Dasgupta (DD)
Posted on Aug 14, 2014 11:00:00 AM

There is no doubt that on-demand cloud services are gaining ground among corporate users of all sizes. Despite the obvious promises of greater flexibility and efficiency, the transition to cloud is incomplete until we can solve a few thorny issues.
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Topics: cisco, private cloud, OpenStack, cloud, Tweet, VMware, vCenter, load balancer, ADC, SDN, application delivery

   
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