CCNA Cisco Certified Network Associate Study Guide - FTP Server

Glossary 673
dynamic VLAN An administrator will create an entry in a special server
with the hardware addresses of all devices on the internetwork. The server
will then assign dynamically used VLANs.
E1 Generally used in Europe, a wide-area digital transmission scheme carrying
data at 2.048Mbps. E1 transmission lines are available for lease from
common carriers for private use.
E.164 1) Evolved from standard telephone numbering system, the standard
recommended by ITU-T for international telecommunication numbering,
particularly in ISDN, SMDS, and BISDN. 2) Label of field in an ATM
address containing numbers in E.164 format.
E channel Echo channel: A 64Kbps ISDN control channel used for circuit
switching. Specific description of this channel can be found in the 1984 ITU-
T ISDN specification, but was dropped from the 1988 version. See also: B,
D, and H channels.
edge device A device that enables packets to be forwarded between legacy
interfaces (such as Ethernet and Token Ring) and ATM interfaces based on
information in the data link and Network layers. An edge device does not take
part in the running of any Network layer routing protocol; it merely uses the
route description protocol in order to get the forwarding information required.
EEPROM Electronically Erasable Programmable Read-Only Memory:
Programmed after their manufacture, these nonvolatile memory chips can be
erased if necessary using electric power and reprogrammed. See also:
EPROM, PROM.
EFCI Explicit Forward Congestion Indication: A congestion feedback mode
permitted by ABR service in an ATM network. The EFCI may be set by any
network element that is in a state of immediate or certain congestion. The destination
end-system is able to carry out a protocol that adjusts and lowers the
cell rate of the connection based on value of the EFCI. See also: ABR.
EIGRP See: Enhanced IGRP.
EIP Ethernet Interface Processor: A Cisco 7000 series router interface processor
card, supplying 10Mbps AUI ports to support Ethernet Version 1 and
Ethernet Version 2 or IEEE 802.3 interfaces with a high-speed data path to
other interface processors.