Information Technology Reference
In-Depth Information
enterprise campus module
Contains the campus core, building distribution, building access,
and server farm/data center.
enterprise data center module
Consists of using the network to enhance the server, storage,
and application servers.
enterprise edge
Contains the e-commerce, Internet connectivity and DMZ, VPN and
remote-access, and enterprise WAN modules.
enterprise remote branch module
Consists of remote offices, small offices, or sales offices.
Rely on WAN for services.
enterprise teleworker module
Supports mobile and home users providing access to corpo-
rate systems via VPN tunnels.
enterprise WAN module
Provides MPLS or other WAN technologies.
Erlang
Te l e c o m m u n i c a t i o n s t r a f f i c u n i t o f m e a s u r e m e n t r e p r e s e n t i n g t h e c o n t i n u o u s u s e o f
one voice path for one hour. Measure of total voice traffic volume in one hour. 1 Erlang = 36
CCS.
EtherChannel
Ethernet Channel ports bundle multiple Fast Ethernet, Gigabit Ethernet, or
10 Gigabit Ethernet links into a single Layer 2 or Layer 3 logical link.
EU Data Protection Directive 95/46/EC
Calls for the protection of people's privacy with
respect to the processing of personal data.
extranet VPN
VPN infrastructure for business partner connectivity that also uses the
Internet or a private infrastructure for access.
fault management
Refers to detecting and correcting network problems.
FCAPS
Fault, configuration, accounting, performance, and security management.
FHSS
Frequency-hopping spread spectrum.
Fibre Channel over Ethernet (FCoE) and Internet Small Computer Systems Interface
(iSCSI)
FCoE and iSCSI are two methods for implementing Unified Fabric in the data center
over 10 Gigabit Ethernet.
firewall
A security device designed to permit or deny network traffic based on source
address, destination address, protocol, and port.
FQDN
Fully qualified domain name.
Frame Relay
A packet-switched connection-oriented Layer 2 WAN protocol.
full-mesh topology
Requires that each site be connected to every other site in the cloud.
FXO
Foreig n Exchange Office.
FXS
Foreig n Exchange Station.
gatekeeper
Provides call control and signaling services to H.323 endpoints.
