Network Node Interface


Also found in: Acronyms.

Network Node Interface

(networking)
(NNI) The ATM Forum's specification for connections between network nodes. NNI makes network routing possible. It typically refers to backbone trunk connections between ATM switching equipment.

See also: UNI.
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References in periodicals archive ?
It translates ATM User Network Interface (UNI) or network node interface (NNI) cells into a 64-byte intra-node format to be processed by the switch fabric (SE and DA).
5Gb/s ATM over SONET at the user network interface (UNI) and network node interface (NNI).
The S/UNI-155-PLUS is the industry's first ATM physical layer solution to specifically address the stringent Network Node Interface (NNI) requirements.

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