As part of our IWAN series, I wanted to provide a deeper dive into PfR. Why PfR? It is a fundamental feature that helps customers protect critical apps while increasing bandwidth utilization. I think it is fair to say, every organization can benefit tremendously from this powerful capability.
PfR or Performance Routing is a feature that complements traditional IP routing protocols by adding application intelligence when making routing decisions. Why do we need application intelligence? Routers forward data packets based on their routing tables which are built using dynamic routing protocols such as RIP and OSPF to calculate the shortest path to the destination for the data packets. RIP and OSPF do not look into data packets to determine the type of application they belong to when making routing decisions. As a result if the application is time sensitive like voice over IP (VOIP) or bandwidth intensive like a file backup data packets are treated with the same priority and will be sent over the same route until they reach their destination. This can create problems if you have a single WAN link since a file backup could consume all bandwidth preventing voice packets from passing in a timely manner and impacting the quality of the voice call. QoS or Quality of Service can help to prioritize data on a single link but you may ultimately need more bandwidth.
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Tags: ASR1000, ISR-AX, IWAN, PfR
We’ve talked about how the Internet is forecast to carry a million minutes of video every second in the next few years, and how Cisco’s Elastic Core solution will help the core infrastructure carry that load. But a scalable and flexible core is only one piece of the puzzle that network operators need. Who else is helping to make a video-centric future a reality?
One place to look is a solution that’s been developed by Miami, FL based NxtGn and Virginia-based Telarix. We wrote about NxtGn’s affiliate Next Communications last year, they’ve been successful in wholesale voice communications, in part due to in-house technology paired with an off-the-shelf Cisco ASR 1000 router performing Session Border Control functionality. Packing a softswitch and an SBC that can handle 16K voice or HD video calls in half a rack has enabled them to minimize their costs in a relatively low-margin market. Telarix isn’t as well known outside of the carrier market – they specialize in what is known as “interconnect business optimization” – basically the back-office components to handle billing, auditing, and traffic routing between carriers. While the concept of billing and auditing might make your eyes glaze over, if carriers can’t figure out how to bill for services rendered you can imagine they view that as a really bad thing.
What NxtGn and Telarix have Read More »
Tags: Asiya Comunicaciones, ASR1000, AVYDA, Cisco, IPv6, Next Communications, NxtGn, SBC, Telarix, video
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
Despite the “buzz” around IPv6 right now for many customers it’s not easy to actually test drive an IPv6 connection. When we got the opportunity to sponsor the Wi-Fi customer access at the 2012 v6 World Congress, we jumped at it. It became an opportunity to showcase both the simplicity and effectiveness of the Cisco Carrier Grade IPv6 (CGv6) solution. The CGv6 solution is the industry’s only IPv6 transition solution that has been performance tested and validated by a third party, in our case by EANTC.
Wi-Fi is a topic of particular interest to mobile operators Read More »
Tags: 6rd, Alain Fiocco, ASR1000, cgv6, Cisco, Cloud Intelligent Networks, Dual Stack, EANTC, IPv6, mobile vni, NAT64, Service Provider, SP Wi-Fi, visual networking index