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For your immediate use, October 15, 1996
NEC Introduces World's First PNNI Routing Capability to NEC's ATM Switching System
NEC Corporation announced that PNNI (Private Network-to-Network Interface) routing capability, which supports large scale hierarchical network has been developed on NEC's ATOMIS Series' ATM switching systems as the software named 'ATOMWARE'. Tentatively Version of its software is released for Japanese market. ATOMIS Series with 'ATOMWARE' is scheduled to be released primarily to Japanese market at the end of this year.
PNNI is the indispensable routing/signaling protocol to build the large-scale multimedia network with ATM technology. It was standardized in April 1996 at the ATM Forum. The PNNI function will realize following network features;
- Large-scale hierarchical network with ATM switching systems can be easily constructed so that the number of the switches can be increased easily and flexibly.
- Dynamic routing control feature of PNNI enables ATM switches to know dynamically the bandwidth and quality of service (QOS) parameters for various kinds of traffic for each link, and also to detect the change in the conditions of the networks due to the topology change (how switches are mutually connected), bandwidth change and failure of ATM switches or links.
- Multi-vendor ATM network can be realized. In case of the existing ATM networks, all the information required for the ATM routing are manually configured at each switch. The most remarkable PNNI feature 'Dynamic routing control' allows network arrangement/construction and operation to be more flexible, cost saving, and efficient. Not only for the ATM networks, PNNI is expected to support the future QOS routing of Internet by adding a new functionality. This feature is still under discussion at the ATM Forum as well as the IETF (Internet Engineering Task Force).
NEC's PNNI software 'ATOMWARE' features are to support the hierarchical network model defined at the ATM Forum PNNI Ver.1 spec. and to realize hierarchical routing in the large-scale ATM networks.
Beyond the standardized specification, 'ATOMWARE' has employed NEC's proprietary routing algorithm to support wide range of network classes and various quality of services. It can improve network utilization as much as possible.
As one of the top ATM switching system suppliers in the world, NEC has deeply been involved in the ATM Forum and other standardization activities and proposing new schemes and methods there. NEC believes the world's first 'PNNI' implementation of this time is the result of such standardization activities and most-advanced R&D capabilities of the ATM technological field.
NEC's ATM switching system 'ATOMIS Series' has marketed around the world and sold widely. By employing PNNI features for this ATOMIS Series, NEC expects that the sales of ATOMIS Series will be further expanded.