PNNI


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PNNI

(Private Network-to-Network Interface) A routing protocol used between ATM switches in an ATM network. It lets the switches inform each other about network topology so they can make appropriate forwarding decisions. PNNI is based on the OSPF protocol, but also measures line capacities and delays rather than just simple cost metrics. Thus, ATM switches can dynamically reroute packets based on current line conditions. See I-PNNI.
References in periodicals archive ?
I-PNNI extends PNNI to include internetwork routing, enabling routers, R/S edge devices and ATM switches to share information and calculate a single, optimal path end-to-end.
the leading provider of predictive network management software, announced plans to deliver integrated PNNI and MPLS software solutions for planning and testing advanced networking technologies.
We're confident that the addition of RADCOM to the Broadband Year conference program will offer attendees a unique perspective in their education on PNNI hierarchy and SLAs.
GN Nettest has already begun development for the bridge between OPNET's recently announced PNNI and MPLS software, and GN Nettest's interEMULATOR products.
PNNISim--Platinum also features an easy to use scripting tool to automate various and rigorous PNNI testing processes.
The ATM test suites consist of an SSCOP test, ATM layer tests, UNI signalling tests, and PNNI signalling and routing tests.
It has several unique features for end-to-end call tracing, fault injection and extensive analysis, as well as full support for multi-heirarchy PNNI as per ATM forum standards.
PNNIsim tests the behavior of PNNI equipment by connecting an emulated PNNI network (with multiple nodes, links and ATM end stations) to actual network switches and hosts.
We included this support in the signalling and PNNI routing components of DC-ATM from day one, and this foresight enabled us to be the first ATM software vendor to market with fault tolerant function, This, in turn, enabled OEMs using our technology to bring their fault tolerant products to market quickly", said John Palombo, Director of Data Connection's ATM Business Unit.
The PNNI conformance suite is based on the ATM Forum's approved PNNI PICs document (af-pnni-0081.
Call Admission Control (CAC) - A flexible and powerful implementation of the Generic Call Admission Control (GCAC) found in the PNNI V1.
PNNI dramatically extends ATM's inherent resiliency, scalability, and fault tolerance in mission-critical networks.