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Technology Stocks : Son of SAN - Storage Networking Technologies -- Ignore unavailable to you. Want to Upgrade?

To: Joe Wagner who wrote (4735)	3/3/2004 12:36:02 AM
From: Joe Wagner	Respond to of 4808

Achieving End-to-End QoS for Wireless Video Streaming Traditional priority and buffering techniques fail to provide the proper QoS mechanisms needed for the delivery of video streams over 802.11 links. Here's how. By Indra Laksono, ViXS Systems Inc. CommsDesign.com Mar 02, 2004 commsdesign.com

To: Joe Wagner who wrote (4735)	3/7/2004 3:26:04 PM
From: Joe Wagner	Respond to of 4808

I wonder if they are doing anything like the MSPP product (see 3rd paragraph below) with Fibre Channel? ------- "The past few years have seen an increase in the integration levels associated with optical transport equipment. The functionality previously available on a fully loaded printed-circuit assembly now fits on a single application-specific IC. As a result, a rack-wide single product is now a single-slot module, and up to three or four individual tools have become a modular, reconfigurable, single-rack device that offers all the previous functionalities and more. The payoff is a significant cost savings, reduced footprint, lower power requirements and less inter-equipment cables." Integration, however, makes sense only if separate devices are used together in the same location. Indeed, this is the case with next-generation Sonet/SDH and new equipment categories that include: ------- MSPP, which combines the functionality of, say, an Ethernet switch, a Sonet/SDH add/drop multiplexer (ADM) and a Sonet/SDH switch. It sits at the metro network edge and aggregates and grooms data and voice traffic. It includes support for the data plane GFP, VCat and LCAS. commsdesign.com A far bigger improvement is the introduction of an effective control plane to transport networks. A transport network-control plane automatically finds an appropriate end-to-end path and configures equipment by receiving a similar path requirement notification used by a technician. It does this by using automatic procedures for network topology discovery, equipment and link status updates. Today, transport control-plane implementations are proprietary and do not provide multivendor interoperability. However, R&D is already under way to produce a standards-based transport control plane, with GMPLS the most likely technology base. In summary, optical transport networks are in the process of major changes, driven by the need to offer better services to data traffic and an associated requirement to significantly lower costs. Though startups with no legacy network can consider moving to all-packet-switched ones based on technologies such as Carrier Class Ethernet and RPR, the incumbent operators are evolving their huge installed base of Sonet/SDH networks to meet these new requirements while, in some cases, establishing small all-packet-switched networks. This Sonet/SDH evolution affects not only the data and control plane technologies, but also equipment architectures and network topologies.