Glossary

static route

A user-specified permanent entry into the routing table that takes precedence over routes

 

chosen by dynamic routing protocols.

subnet address

The subnet portion of an IP address. In a subnetted network, the host portion of an IP

 

address is split into a subnet portion and a host portion using an address (subnet) mask.

 

This allows a site to use a single IP network address for multiple physical networks.

subnet mask

A number that identifies the subnet portion of a network address. The subnet mask is a

 

32-bit Internet address written in dotted-decimal notation with all the 1s in the network and

 

subnet portions of the address.

TCP

Transmission Control Protocol. An Internet standard transport layer protocol defined in

 

STD 7, RFC 793. It is connection-oriented and stream-oriented.

Telnet

Virtual terminal protocol in the Internet suite of protocols. Allows the user of one host

 

computer to log into a remote host computer and interact as a normal terminal user for that

 

host.

terminal emulation

Software that allows a PC to mimic the signals of a specific type of terminal, such as a

 

VT100 or 3270, to communicate with a device requiring that terminal interface.

TFTP

Trivial File Transfer Protocol. A standard TCP/IP protocol that allows simple file transfer to

 

and from a remote system without directory or file listing. TFTP is used when FTP is not

 

available.

TraceRoute

A program that lists the hosts in the path to a specified destination.

trap (SNMP)

A notification message to the SNMP manager when an unusual event occurs on a network

 

device, such as a reinitialization.

UDP

User Datagram Protocol. A TCP/IP protocol describing how messages reach application

 

programs within a destination computer.

unicasting

In ATM, the sending of a Protocol Data Unit (PDU) to a single destination.

upstream

In the direction of the telephone network.

XTACACS

See Authentication Server.

VNID

Virtual Network ID.

WAN

Wide Area Network. A network that spans a large geographic area.

8000-A2-GB26-10

January 1999

GL-5

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Paradyne 8310 MVLt Static route, Subnet address, Subnet mask, Telnet, Terminal emulation, TraceRoute, Trap Snmp, Upstream