Planet GS-5220 Series User Manual page 556

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 giving each computer in the network both a NetBIOS name and an IP address
corresponding to a different host name, 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, which 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
User's Manual of GS-5220 LCD Series
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