Cisco Blogs


Cisco Blog > The Platform

How Cisco Switching Innovations Help Deliver Cloud-Ready Networking

Today, we made a significant announcement that transcends data center, campus and service provider and Cloud-based deployments,  geared towards helping our customers embrace the winds of change that are buffeting the IT landscape.  This announcement is precipitated by a number of mega-trends that were buzzwords even a couple of years ago but have become looming realities in the IT landscape. Think video, virtualization, 10G, Bring your own device (BYOD) and not to forget – the journey to cloud.

Layer in ongoing careabouts like security and Energy Efficiency – and boy, do we have the perfect storm brewing.

The three “Cs”:

For many customers,   it is no longer sufficient to take a “band-aid approach”.  A faster switch here or a new wireless LAN access point there just doesn’t cut it. They have to step back and evaluate their environment holistically, and minimize the chokepoints proactively. This is causing them to evaluate the three “Cs” of capacity, complexity and cost, while ensuring that they’re in a position to deliver the end-to-end IT experience.

Read More »

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

FHRP – Egress Path Optimization from the Server to the Client

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.

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: , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Expanding the Nexus 7000 family

Cisco recently announced the Nexus 7009 chassis expanding the Nexus 7000 family to 3 chassis. To refresh your memory on the Nexus 7000 family, here’s a quick at a glance comparison.

I often get asked, why Cisco introduced a 9 slot chassis when we already have a 10 slot chassis. The simple answer is – customers asked for a smaller form factor Nexus 7000 switch that delivers the high performance and resiliency that the Nexus 7000 family is known for.

Read More »

Tags: , , , , ,

USS Cisco Captain’s Log on Networking Tech Field Day 2

Captain’s log, October 27, 2011:

The USS Cisco took off for the Gestalt IT Networking Tech Field Day 2 with Captain Omar Sultan (see picture below, courtesy of techfieldday.com), Data Center Solutions Sr. Marketing Manager, at the helm. Tech Field Day networking industry experts gathered on the bridge, cleverly disguised as the Cisco Cloud Innovation Center (CICC) Lab, for an informal, no-holds-barred conversation on recent Nexus portfolio announcements, the continued march towards automated provisioning of cloud services and ever-evolving VM networking technologies.

Captain Omar at Cisco Networking Tech Field Day 2

For those who weren’t at the event or haven’t seen the video recording yet, please excuse my unabashed geekiness, but you’ll have to watch the first minute of the video to get the above reference. As a new member of the Data Center Solutions Marketing team, this is also my first foray into the Cisco blog-o-sphere, so I hope to share some fresh viewpoints on the day’s events.

Several things were made very apparent during the Tech Field Day session:

Read More »

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