Exterior Gateway Protocol. An interdomain IP routing protocol for exchanging routing information between autonomous systems. BGP is the replacement for EGP.
EIGRP
Enhanced Interior Gateway Routing Protocol
EIR
Excess Information Rate
EIRP
Effective Isotropically Radiated Power
EL
Entry Level, used to specify a model of Cray computer.
ELA
EtherNet Local Access, a product offered by Qwest.
ELAP
EtherTalk Link Access Protocol
ELIN
Emergency Line Identification Number
EMANATE
Enhanced MANagement Agent Through Extension
EMP
Excessive Multi-Posting
EN641
The model number for an NSC DX router at NCAR, also known as hy-gw1.
encapsulation
The technique used by layered protocols in which a layer adds header information to the protocol data unit (PDU) from the layer above. As an example, in Internet terminology, a packet would contain a header from the physical layer, followed by a header from the network layer (IP), followed by a header from the transport layer (TCP), followed by the application protocol data.
ENSO
El Nino/Southern Oscillation
EOS
Earth Observing System
EPO
Emergency Power Off
EPROM
Erasable Programmable Read-Only Memory
EPSCoR
Experimental Program to Stimulate Competitive Research (NSF)
EQC
Email Query/Change utility
ERL
Emergency Response Location
ES-IS
End System to Intermediate System protocol. The OSI protocol by which end systems (hosts) announce themselves to intermediate systems (routers).
ESD
Electronic Static Discharge. The spark you get when you wear wool and touch a grounded metal surface. At NCAR, we have a problem with IP phones and ESD - users sometimes get a painful spark from the phone headset.
Electronic System IDentification; Extended Service Set ID
ESZ
Emergency Service Zone
ETE
End to End (E2E)
Ethernet address
See MAC-level address.
Ethernet
An IEEE 802.3 standard using baseband contention access over coaxial cable and twisted-pair wires, supporting data rates up to a theoretical maximum of 10 million bits per second.
EtherTalk
AppleTalk protocol using an Ethernet medium.
EtherWave
EtherWave is a way of wiring Ethernets. It allows up to 7 machines to be "daisy chained" off a single 10baseT Ethernet hub port. This cuts down on the cost of pulling 10baseT cables from the hub to each machine. There are several forms of EtherWave adapters, all of which "daisy-chain" using 10baseT. The difference is in the connection from the adapter to the machine. These connections can be 10baseT, LocalTalk, or AUI. EtherWave is also available as a card that fits in a Mac or PC, with two 10baseT interfaces on the card.
EULA
End-User License Agreement, a type of license used for most software. A EULA is a legal contract between the manufacturer and/or the author and the end user of an application. The EULA details how the software can and cannot be used and any restrictions that the manufacturer imposes (e.g., most EULA’s of proprietary software prohibit the user from sharing the software with anyone else).
EVC
Ethernet Virtual Connection, part of Qwest's QMOE service. It seems to be Qwest's name far a VLAN.
