Cisco Service Discovery Gateway – Enabling Zeroconf in Enterprise Networks
I’ll admit it: I’m what others call an Apple fan boy. One of the many reasons for being one is the polished user experience and the ease-of-use of their products. One of the underlying technologies that enables the user to discover devices and services on the network is Zeroconf or, as Apple calls it, Bonjour.
Zeroconf consists of three major components:
Address auto configuration,
If your network doesn’t have a DHCP server or you haven’t statically assigned an IP address to your host, most operating systems will use an automatic private IP address. I’m not going into much detail on address auto configuration except that this is typically done using a technique called APIPA (Automatic Private IP Addressing) for IPv4 the host will use the famous 169.254.0.0/16 addresses or, in case of IPv6, by using link-local addresses only (FE80::/10) which has been designed into IPv6 as a basic functionality from day one. Also, naming is not of much of a concern in the context of this discussion. However, it is worth mentioning that Zeroconf names can contain Unicode characters and whitespace, which can make those names a lot more user friendly and meaningful contrary to pure DNS names.
The more interesting part, as it pertains to Zeroconf, is the service discovery. Read More »
If you were one of the more than 20,000 people who attended Cisco Live Orlando in person or one of the 250,000 who joined us online, you were able to see amazing examples of new ways the Internet of Everything (IoE) is connecting people, process, data, and things. People have asked me how long before they can see the value of IoE in action. Let me be clear: The Internet of Everything is not the Internet of tomorrow, it’s the Internet of today. Our most recent research shows that $1.2 trillion of value is “up for grabs” in calendar year 2013 alone. Read More »
A couple weeks ago, we wrapped up a very successful Cisco Live event in Orlando for more than 20,000 attendees. During the conference, we announced a new name for our software product formerly known as Cisco Virtual Network Management Center (VNMC).
Over the last couple of years, Cisco Prime Network Service Controller (Prime NSC) has developed into Cisco’s primary management platform for Layer 4 through 7 network services deployment in a cloud or virtualized environment. Today the software supports multiple different use cases for network services, with several hundred customers worldwide.
Cisco Prime Network Services Controller is the control point and management software for the InterCloud solution – providing VM workload mobility between a private and public cloud while retaining the same IP address and Layer 2 connectivity. As outlined in a recent blog post by my colleague Gary Kinghorn, our new Nexus 1000V InterCloud solution for hybrid cloud was a big hit at Cisco Live. During the InterCloud demonstration at Cisco Live, we showed how this Cisco-created technology allows enterprise organizations to extend their Layer 2 network to public clouds like Amazon Web Services.
The screenshots below illustrate how InterCloud enables the secure migration of a VM to a public cloud environment:
At Cisco Live, we also announced our new fabric path technology called Cisco Dynamic Fabric Automation (DFA). This new Unified Fabric technology enables simplified network automation and provisioning for both physical server and VM deployments. In the DFA architecture, Cisco Prime Network Services Controller is responsible for managing network services insertion – including firewalls and load balancers – when provisioning or moving VMs.
“You can’t manage what you can’t measure.” So said Dave Evans, Cisco’s chief futurist, in his keynote address at Cisco Live 2013. I couldn’t agree more! As we usher in a new era of hyperconnectivity, we will see our environment in unprecedented ways, and then manage it like never before.
The trick is getting the relevant data to the right people at the correct time.
Cisco calls this transformation the Internet of Everything (IoE). With its explosion in connectivity from 10 billion things today to 50 billion in 2020, IoE promises a profound transformation that will enhance nearly all aspects of our lives.
But only if we do it right. And that requires changing the ways in which we think.
For IoE to be a true game changer, it will take much more than infusing every road, refrigerator, tire, and supermarket shelf with data-generating sensors. IoE could, for example, have a deep impact on water management. Today, 30 percent of fresh water is lost to leaking pipes. But a sensor in a pipe can only tell you that it’s losing water (and you may already have known that). The key is managing the information, tying it into control systems, and creating far-reaching, highly efficient processes for rerouting water or mobilizing maintenance resources. Read More »
If you live in the US, I hope you had a good 4th of July holiday last week. It’s already been over a week since a very exciting Cisco live! If you were there in person, or you caught much of it on video, I’m sure you know about the enthusiasm and excitement from an unexpectedly large number of attendees. Crowds in the World of Solutions were amazing, especially trying to learn about our new Cisco Dynamic Fabric Automation (DFA) technology, as well as the new enhancements in our Nexus 1000V virtual networking portfolio, like Citrix NetScaler 1000V.
While on the Nexus 1000V topic, I would like to point out a great blog write-up by the always insightful Jason Edelman, a Solution Architect at a national solution provider, on our Nexus 1000V InterCloud hybrid cloud solution. Nexus 1000V InterCloud received a great deal of interest and attention at Cisco live and may have been the busiest pod in our virtual networking area in the World of Solutions. The concept of hybrid cloud is really gaining traction and organizations appreciate the importance of now seamlessly extending virtual overlays from the on-premises data center to public cloud providers as Nexus 1000V InterCloud now enables. Nexus 1000V InterCloud began shipping last week, as well (with vPath and the Virtual Services Gateway coming soon), so the timing of all this interest couldn’t be better. To download the Nexus 1000V InterCloud GA image for evaluation, go here.
One of the aspects of InterCloud that we were talking about in more detail at Cisco live! was the internal security. The architecture supports complete encryption of all traffic not only between the enterprise or on-premises data center and the service provider cloud, but encrypts all data-in-motion within the provider cloud, to protect traffic from exposure to the service provider and other tenants. This encrypted tunnel includes all traffic going to the virtual services residing in the cloud. And this is on top of the security provided by the virtual services (when supported in InterCloud in Q4 CY 13), such as the virtual firewalls, VSG and ASA 1000V Cloud Firewall.