Vigitron MaxiiNet Vi30018, Operational Manual

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MVR
Multicast VLAN Registration (MVR) is a protocol for Layer 2 (IP)-networks that
enables multicast-traffic from a source VLAN to be shared with subscriber-
VLANs.
The main reason for using MVR is to save bandwidth by preventing duplicate
multicast streams being sent in the core network, instead the stream(s) are
received on the MVR-VLAN and forwarded to the VLANs where hosts have
requested it/them (Wikipedia).
N
NAS
NAS is an acronym for Network Access Server. The NAS is meant to act as a
gateway to guard access to a protected source. A client connects to the NAS,
and the NAS connects to another resource asking whether the client's supplied
credentials are valid. Based on the answer, the NAS then allows or disallows
access to the protected resource. An example of a NAS implementation is IEEE
802.1X.
NetBIOS
NetBIOS is an acronym for Network Basic Input/Output System. It is a program
that allows applications on separate computers to communicate within a Local
Area Network (LAN), and it is not supported on a Wide Area Network (WAN).
The NetBIOS gives each computer in the network both a NetBIOS name and an
IP address corresponding to a different host name. It provides the session and
transport services described in the Open Systems Interconnection (OSI) model.
NFS
NFS is an acronym for Network File System. It allows hosts to mount partitions
on a remote system and use them as though they are local file systems.
NFS allows the system administrator to store resources in a central location on
the network, providing authorized users continuous access to them. This means
NFS supports sharing of files, printers, and other resources as persistent storage
over a computer network.
NTP
NTP is an acronym for Network Time Protocol, a network protocol for
synchronizing the clocks of computer systems. NTP uses UDP (datagrams) as
transport layer.