Lately I’ve been seeing some industry people trying to apply the principles of data center network fabric models to their Wide Area Networks (WANs), and implying that such can be extended through service provider WANs. Data center fabrics and WANs are horses of very different colors with way too many differences for these perspectives to hold up.
Fundamentally they are different beasts with one more easily tamed than the other. Data center networks generally have well known end points and well-ordered designs.
Multi-tenant Data Center Designs
Bandwidth within data centers is virtually unlimited relative to WAN bandwidth. It is much more stable and constrained in its characteristics when it comes to things like latency, loss, jitter, capacity, restoration capabilities – all of which have significant influence on WAN services delivery. The same data center network assumptions exist between each of the end points, which makes fabric modeling for data centers generally a good approximation and thus possible to use.
Some private WANs that interconnect data centers may align closely enough with a fabric model, making it a good enough approximation. But this is a unique case and is essentially Read More »
Tags: cloud, data center, datacenter, SDN, Service Provider, sla, software defined network, WAN
In a previous blog, I posted the first of three pitfalls of hitching your wagon to the cloud . Today, let’s cover the second pitfall of force fitting cloud into your current security model.
Recently, I had an opportunity to listen to the CIO of a Fortune 100 company talk about top business care-abouts for IT. We have all heard about cloud and virtualization as technology care-abouts, but this CIO boiled it all down to two things that matter for IT: Productivity and Risk. Read More »
Tags: ASR_1000, CIO, cloud, Hybrid Cloud, ISRG2, IT, risk, security, vpn, WAN
In any water cooler conversation or a fireside chat in Silicon Valley, it is impossible to avoid a conversation about technology. Unlike Real Estate, which used to share air time with Tech before the recession, Tech has weathered the storm. We love to talk Tech here in Silicon Valley and thanks to the very high standards of innovation in the neighborhood, there’s always something different to talk about.
Here’s what some of the most common discussions this week might look like…
iJill: “Did you check out the latest iPad?? Its Retina Display, packs more pixels than my HDTV”.
gJack: “Oh yeah?.. my Android tablet has far superior specs to yours, plus it gives me the freedom to root my OS and do what I want with it!”..
iJill: “But, there’s no comparison to the number of Apps I can install and your tablet apps are a joke!”
gJack:” You only get 16GB in your iPad whereas I can get 32GB or more for a lower price”
iJill: ” Yes, but your battery hardly lasts until you complete your blog post, while I am still engaging with my blog readers responding to comments via Disqus while listening to music” …..
Read More »
Tags: 800 series, Cisco, Integrated Services Routers (ISR), ISR G2, SRTG, WAN
I have a confession: I’m a technology late-adopter. On Rogers’ Innovation Adoption bell curve, I probably fall somewhere in the ‘late majority’ — I like the tried and true.
But with a few years and many advances, I’m back on Facebook (my short experience with it left me with privacy paranoia), and if you can believe it, I’m now an iPhone user. I appreciate not lugging around my iPod, and having a camera ready whenever I need it, but it’s not only the extra bells on the integrated device that has impressed me – it’s the realization that I don’t have to compromise functionality to have it all.
Another technology that has made a lot of strides since its entry into the market is integrated router security. Read More »
Tags: access control, asr 1000, Cisco ISR G2, firewall, security, TrustSec, vpn, VPN routing/forwarding, WAN
Last week at the Cloud Connect 2012 conference in Santa Clara, I was sharing a panel with industry colleagues representing the most prominent vendors in the application optimization, cloud infrastructure and network acceleration space . The topic was “hitching your wagon to the cloud”, discussing the importance of the network, particularly WAN, to make your cloud deployments successful. Folks talked about interesting concepts like “stateless branch office”, and “nirvana of Internet as WAN” before someone in the audience retorted, “I need solutions that help me deal with reality!” Read More »
Tags: ASR1000, branch, cloud, hybrid WAN, ISRG2, SaaS, WAN, WAN Optimization