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New Technologies for the Delivery of Services

July 23, 2012 at 8:11 pm PST

Reduction in the complexity of deploying and managing services, accelerating new service introduction, and reducing capital/operational expenditure overhead are key priorities for network operators today. These priorities are in part driven by the need to generate more revenue per user. But competitive pressures and increasing demand from consumers are also pushing them to experiment with new and innovative services. These services may require unique capabilities that are specific to a given network operator and in addition may require the ability to tailor service characteristics on a per-consumer basis. This evolved service delivery paradigm mandates that the network operator have the ability to integrate policy enforcement alongside the deployment of services, applications, and content, while maintaining optimal use of available network capacity and resources. Read More »

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Wireless Network Capacity: the Never-Ending Quest

By Howard Baldwin, Contributing Columnist

For quite a few years, experts within the wireless communications industry have been expressing concern about the potential for running out of wireless network capacity. Moreover, FCC Chairman Julius Genachowski noted the ongoing challenges in his 2009 address at CTIA.

In July, the Fortune article, Spectrum Squeeze: The Battle for Bandwidth, envisioned a potential fight for wireless bandwidth frequencies between television networks and telecom service providers. In Canada, earlier in September, Shaw Communications announced it would use Wi-Fi as its next-generation wireless network of choice — in anticipation of future customer demand.

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Capacity Planning at Cisco

 Capacity planning depends on accurate measurement; but what you do with the measurements depends on the service, the region, and where your business is going.  Here’s how we do it, and what we expect to be facing in the future.

 Measuring WAN circuit capacity depends on the circuit design at each branch office.   Standard Cisco architecture for any WAN connection is a primary and a secondary WAN circuit.  For most sites, where available and cost effective, the two circuits are the same size and we load balance across the two.  Sometimes however, to reduce costs we provide a smaller backup circuit, and assume that some of the traffic will not be served during the short time of a primary WAN link outage (video conferencing may stop, voice may go out the voice gateway, etc.).  Capacity planning gets done on the primary circuit.

 There are not many tools available for doing capacity planning, and not much automation that has grown up around that process.   Mostly, we use 3 different homegrown reports for this.  The first of these reports remain the same from our earlier capacity-planning days; the second helps us deal with transient peak traffic; and the third helps us look at service levels.

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Capacity Planning Challenges at Cisco

 Capacity planning is facing some significant problems with two new services in the future:  high definition desktop/laptop video, and home Telepresence.  Video has a significant impact on bandwidth use, and these two services threaten to place new demands on the network.

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Service Capacity Planning at Cisco

Capacity planning is getting far more complicated as network services get more complex, and it requires understanding each service as a whole, cutting across several traditional IT services like network and data center capacity planning.  Here’s how Cisco IT is starting to address these new service-based capacity issues, mainly focusing on Network and Voice Capacity Management

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