Digital Equipment RapidPrint 500, Справочное руководство

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MAU Medium Attachment Unit. This is a small device used as a transceiver
between a
Thinwire network cable and an AUI cable or a Thickwire
cable and an AUI cable. It consists of the physical adapter as well as the
circuitry needed to convert signals from one medium to the other.
MOP Maintenance Operations Protocol. MOP is a Digital protocol for Ethernet
network traffic. The protocol is used for remote communications between
hosts and devices on the network. Terminal servers use this protocol to
download code from a host quickly and easily. For networks where LAT
and MOP are the dominant network services, MOP is the simplest way to
boot the server.
At boot time, the server broadcasts a request on the network for a load
file, and a MOP host will respond and send the file. MOP is also used to
signal the server of an
NCP request or connection from another host, and
is the protocol that TSM is based on.
MTU Maximum Transmission Unit. The MTU of a link is the maximum packet
size, in bytes, that can be transmitted across the link. For Ethernet, this is
1536 bytes. For SLIP lines, it can be variable, based on each host’s ability
to receive and reassemble packets. The RFC for SLIP suggests an MTU of
1006 bytes, but this is not a requirement.
multicast A message that is sent out to multiple devices on the network by a host .
Multicasts are generally sent at specified intervals to avoid cluttering the
network, and in the case of LAT, contain the name of the host sending
them as well as information about what LAT
services that host provides.
nameserver When starting Telnet and Rlogin connections, you can specify the host to
use for the connection in one of two ways: either by a text name, such as
“alex.weasel.citco.com,” or by a numeric
IP address , such as
195.22.89.172. The latter form can be routed easily since hosts on the net-
work know how to map numeric addresses to exact hosts. They have
more trouble with names, however, and this is where name servers come
in. Some host(s) on the network are designated as name servers, to trans-
late (or resolve) text-style names into numeric addresses. No Telnet con-
nect request can be attempted until a numeric address is known for a
host, so if there is no accessible name server, numeric addresses must be
used.
NCP Network Control Program. NCP is a program run on VMS machines to
configure local network hardware and remote network devices. In the
case of the RapidPrint 500, NCP can be used to remotely log into and
reboot the server or cause it to “dump” its memory to a host for analysis.
It is can also be used to access the RapidPrint 500 console port from a host
VMS system.
NetWare A Novell-developed Network Operating System (NOS). Provides file and
printer sharing among networks of Personal Computers (PC’s). Each Net-
Ware network must have at least one fileserver, and access to other
resources is dependent on connecting to and logging into the fileserver.
The fileserver(s) control user logins and access to other network clients,
such as user PC’s, print servers (such as the RapidPrint 500), modem/fax
servers, disk/file servers, and so on.