User`s guide

Glossary Cayman 3220-H User’s Guide
4 December 2000
DHCP Dynamic Host Configuration Protocol. A network configuration
protocol that lets a router or other device assign IP addresses and
supply other network configuration information to computers on
your network.
dial in Port setting that specifies that other routers can initiate a connection
to the local router but that the local router cannot initiate a
connection to other routers. A port can be set as both dial in and
dial out. Compare dial out.
dial on demand Communication circuit opened over standard telephone lines when
a network connection is needed.
dial out Port setting that specifies that it can initiate a connection to other
routers but that other routers cannot initiate a connection to it. A
port can be set as both dial in and dial out. Compare dial in.
domain name Name identifying an organization on the Internet. Domain names
consists of sets of characters separated by periods (dots). The last
set of characters identifies the type of organization (.GOV, .COM,
.EDU) or geographical location (.US, .SE).
domain nameserver Network computer that matches host names to IP addresses in
response to Domain Name System (DNS) requests.
Domain Name System
(DNS)
Standard method of identifying computers by name rather than by
numeric IP address.
DSL Digital Subscriber Line. Modems on either end of a single twisted
pair wire that delivers ISDN Basic Rate Access.
DTE Data Terminal Equipment. Network node that passes information to
a DCE (modem) for transmission. A computer or router
communicating through a modem is an example of a DTE device.
DTR Data Terminal Ready. Circuit activated to indicate to a modem (or
other DCE) that the computer (or other DTE) is ready to send and
receive data.
echo interval Frequency with which the router sends out echo requests.