I previously discussed using LISP to optimize your client-server traffic so today I’ll discuss the reverse direction: Egress Path Optimization from the Server to the Client. Let’s go over the need for Path Optimization in the direction from Server-to-Client with some pictures and explanations.
The Virtual Machine (VM) server is configured with a default gateway IP address, 192.168.1.1, which is the next hop IP address that the VM will forward packets towards as the traffic returns to the client outside the data center. In this data center environment, we’ve deployed the default gateway using the First Hop Redundancy Protocol (FHRP). In reality, FHRP is an umbrella technology term that includes Hot Standby Routing Protcol (HSRP) and Virtual Router Redundancy Protocol (VRRP), two main technologies that provide transparent failover and redundancy at the first hop IP router. Please see info on FHRP here.
Also notice that the VM default gateway is the same as the HSRP Virtual IP Address (VIP). The HSRP VIP binds itself to one of the physical HSRP Routers via an HSRP election process using Layer 2 control packets between the two physical HSRP Routers and this means that the VM default gateway, since it points to a VIP, may move between physical HSRP Routers, and of course which is then intent and design when using any type of FHRP.
In the above picture, the Path is Optimized from Server to Client, so now let’s take a look at what happens when we migrate the VM to the new data center.
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Tags: cloud, data center, Data Center Interconnect, DCI, FHRP, HSRP, LISP, mobility, N7K, Nexus 7000, OTV, vMotion, Workload Mobility
I spent a recent weekend helping a friend load his belongings into a moving van, in preparation for relocating his family from California to Texas. Sometime between lifting my end of a sofa and carrying boxes that apparently contained his collection of concrete blocks, we talked about his search for a new home.
Although there are certain amenities he would like his new house to have, the biggest influence on his choice of residence is the old real estate axiom location, location, location. He has a child in preschool and a good job, so you can guess his priorities: something near a highly rated school, not too far from work and where property values are apt to rise over time.
Location is a critical consideration for Data Centers, too, although for different reasons. Read More »
Tags: air economizer, carbon footprint, Cisco, coc-data-center, data center, datacenterdeconstructed, electrical mix, energy efficiency, natural disasters, power costs, site selection
We had so much fun last year…and so far, they are letting us come back. We had fun doing a little promo for the trip…an excuse really…to let Jimmy Ray play dress up, let me work on my Alfred Molina impression and most of all…let Producer Steve Ewertz loose so he can shoot/edit/compose the way he likes!
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Tags: ciscolive, data center, mobility, Techwise, TechWiseTV
As 2011 comes to a close, what do you think 2012 will bring? We predict it will be the Year of the Cloud!
In this last episode of Partner Update for 2011, Andrew attempts to communicate with the entire CloudVerse, until he learns what it actually is (a set of cloud capabilities that helps our partners build public, private, and hybrid clouds for customers).
What else made the news over the past couple of weeks? We crowned two partners winners of the 25 Words contest for their witty entries, look closely at how Cisco partners are helping to build a fast and secure network to help customer Doss Aviation power fighter jets, learn best practices around Smart Care Services and building better customer relationships, find out how OnPlus can help partners diagnose and fix network issues from virtually anywhere on any device, a services cheat sheet to help build relationships and increase profits, and more.
Tune in and watch our latest newscast covering the top Cisco partner headlines, as always, in under 5 minutes.
Keep reading for links to the top headlines, time stamps so you can find each news item within the video, and more details on each of the stories we covered.
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Tags: charities, Cisco, cloud, coudverse, customer, data center, doss, hybrid, OnPlus, partner, private, public, services, smartcare, WWPO
Previously, I blogged that the concept of “cloud in a box” is a misnomer. As I discussed then, transitioning to cloud is not a one off occurrence, it is a journey. This was emphasized further when, earlier this month, we launched Cisco CloudVerse, introducing the concept of the World of Many Clouds. So what is the quickest and easiest way for you to start on this journey to the world of many clouds?
Cisco Data Center Services has a simple proposition for you: Just add our recently announced Cloud Optimization Service through your existing Cisco Cisco Data Center Optimization Contract! If you have Cisco Network Optimization Service, or “NOS”, talk to your account manager on how to leverage the Cisco Data Center Optimization deliverbles
Optimization services are our most popular Cisco Advanced Services offering, so there is a fair chance you have such a subscription service today already. (You may have seen my previous blogs around Cisco Data Center Optimization Service, see here and here).
Cisco Cloud Optimization Service - Optional Activities Available
Oh – and if you don’t have a Cisco Optimization Service such as the Cisco Data Center Optimization service, or Cisco Network Optimization Service (“NOS”) – then you should get one! Optimization services are our most popular Cisco Advanced Services offering – so if you don’t have one, your competitors almost certainly will.
Here I’ll take some time to explain what this service is and how it will help you start or evolve your cloud transformation.
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Tags: Cisco Unified Computing System, data center, data_center, UCS