Cisco Blogs


Cisco Blog > Data Center and Cloud

LISP – Finding the Optimized Path for your Workload

Update: LISP solves the problem from client to server, IE Ingress Path Optimization.  FHRP solves the problem from server to client, IE Egress Path Optimization.  You can check out Egress Path Optimization here.

We recently published a Data Center Interconnect -- DCI-  related document on cisco.com and I wanted to get it in front of you.  Locator/Identifier Separator Protoc0l -- LISP -- provides the path optimization technology to forward transactions via the most direct path, ultimately meaning better application performance. The link for the LISP Virtual Machine Mobility paper is below.

As a side note, LISP can be used many other ways and here’s a pointer to one of  our LISP pages.

For our purposes in DCI, we use LISP for path optimization and we can see here why the  need arises. The box on the left shows an existing transaction that looks pretty direct.  The middle box shows the workload is now in a new data center but the transaction is suboptimal, it still goes through the firsts data center.  The box on the right shows the desired path, the direct path from user to workload withouth going through the first data center.  It’s pretty easy to see the need here for path optimization and the desire to have the direct path to the new data center location as shown on the far right box.

Read More »

Tags: , , , , , ,

New Report Available on VSG and vWAAS Virtual Services for Vblock Platforms

January 5, 2012 at 3:40 pm PST

VCE LogoLast month the VCE Company, the joint venture between Cisco and EMC (with investments from VMware and Intel) that makes the Vblock infrastructure platforms, released a report on Cisco’s virtual services validating their suitability on the Vblock platform. The 40 page technical report covers both Cisco’s Virtual Security Gateway (VSG) firewall, and our Virtual Wide Area Application Services (vWAAS) WAN optimization solution. Both Cisco products run as virtual machines on a VMware hypervisor and the Nexus 1000V virtual switch on an application server, or in the case of VSG, on a Nexus 1010 services appliance. Read More »

Tags: , , , , , ,

Deciphering a UCS Call Home Inventory Email with the right tools

January 4, 2012 at 6:45 pm PST

Every year I decorate my home’s front door for the holidays, it’s very simple just evergreens, some pine cones, maybe some sticks with berries.  It takes about a day, I get up early the first Sunday of December and drive around the rural areas where I live and clip greens. I look for interesting items maybe red or blue berries, cool pine cones, maybe some tall grasses that have a decorative look to them. I been doing this for about 14 years and have learned how to be more efficient by using the right tools and preparing the day before.

I make sure the wire frames that I hang the greens in are in a good state of repair, I get out my warm gear since I’ll be outside all day, setup my van so I have a place to put the clippings.  I even coat all my fingertips with a product called nu-skin since the greens can be pretty sharp and at the end of the day my hands are beat up.  My preparation and implementation methods have evolved over the years and I think now I have it down to a science, the results of my efforts are shown below with before and after pictures.

What I found was that the right tools really do make a difference, my first time I had clippers that weren’t sharp enough, clothes that weren’t warm enough, and I was so frustrated when I was finished that I swore I would never do it again.  The end result however was so nice and received so many compliments that  the next year I tried it again but did it a little smarter. I used the right tools for the job.

The right tools will always help but you have to know how to use them and then sometimes you have to use them a lot to get comfortable.  When it comes to XML the tool that I found does a great job is xmlstarlet. One of the features of Cisco’s UCS Manager is the ability to send a system inventory email using Callhome.  The inventory email can be sent automatically on a regular basis with the minimal interval of a day.   The UCS inventory email contains all sorts of useful information

  • IP addresses
  • Serial Numbers
  • Firmware Levels
  • Fabric Interconnects
  • Chassis
  • IOM
  • Blades
  • Associated Service Profiles
  • Processors
  • Memory
  • Disk
  • Controllers

This information and more can be retrieved from the Callhome email.  What follows is a detailed breakdown of an xmlstartlet command to mine the UCS inventory information from the Callhome inventory email.

Read More »

Tags: , , ,

Best Practices for Application Delivery in Virtualized Networks – Part II

As we start off this New Year, how about including a resolution to improve application delivery? In Best Practices for Application Delivery in Virtualized Networks – Part I , we covered key application delivery challenges that have come up due to the complexities of managing the many types of applications that enterprises use today, and further complicated by data center consolidation and virtualization. We then covered some best practices, courtesy of Dr. Jim Metzler’s 2011 Application Service Delivery Handbook, which recommended taking a lifecycle approach to planning and managing application performance.

A key step to the lifecycle approach is to implement network and application optimization tools, such as WAN Optimization solutions and Application Delivery Controllers, including server load balancers. Of course, these solutions are not new to the market and already address many of the needs that exist with delivering enterprise applications in virtualized data centers -- namely, the need to ensure network reliability, availability and security for users accessing these applications. In this post, we will discuss a recent study by IDC, where IT decision makers across Europe and the US spoke out about their strategies for using server load balancers to deal with emerging challenges.



.                                                                                                                                                                                                                                                                                              What important attributes do you look for in your server load balancers?

Read More »

Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Registering a Sense of FCoE Perspective: Sniffling, Scaling and Storage

January 1, 2012 at 5:00 am PST

When The Register published a conversation with Brocade on December 8 about the success of their 16Gb Fibre Channel vs. Cisco’s FCoE solutions, you just know that there were going to be several elements that were going to raise an eyebrow or two. Maybe three.

Personally, I found the comparison between Brocade’s 16G solutions and Cisco’s FCoE solutions as something of a red herring. That is, there are different reasons why a customer would want to use one tool in the toolbox versus another, but they were saying “our new jackhammer is better than their entire toolbox.”

Nevertheless, some people felt that the article was an unbalanced promotion of Brocade’s new toys. I was invited by The Register author Chris Mellor to write a response article, which I did, and then waited for it to be printed. Read More »

Tags: , ,