Cabletron Systems Netlink FRX8000, User Manual

Page: 451 / 468

glo-3
Configuration database
see “Database.”
Congestion
is a local condition that occurs when there are too many packets to be queued in the
node buffers, causing information transfer to be delayed.
CPU
stands for “central processing unit.”
D
Database
contains the files that define network configuration, subscribers, alarms and statistics.
Datagram
is the basic unit of information passed across the Internet. It is the IP equivalent of a
packet.
DCE
stands for “data circuit-terminating equipment,” which provides the functions nec-
essary for communication operations between the end-user device (see “DTE”) and
the network. “Physical DCE” refers to the hardware configuration, and “Logical
DCE” refers to the software configuration. Note that physical and logical DCE are
independent of each other; however, for each, if one end of the connection is DCE, the
other must be DTE, and vice versa.
Dotted Decimal Notation
is the syntactic representation for a 32-bit integer consisting of four 8-bit numbers (in
base 10) separated by periods. This format is used for IP addresses.
DPPM
stands for Disk Packet Processing Module, and is used to identify an N7400 or N7500
switching node that does not have an attached NMP or integral call processing (ICP)
or management (INM) capabilities.
DTE
stands for “data terminal equipment,” which is the device at either end of a user-to-
network communications path. “Physical DTE” refers to the hardware configuration,
and “Logical DTE” refers to the software configuration. Note that physical and logical
DTE are independent of each other; however, for each, if one end of the connection is
DCE, the other must be DTE, and vice versa.