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BNF
A Backus-Naur Form (BNF) is a formal way to describe a language by using syntactic and lexical rules. BNFs are frequently used to define programming languages, but also to define the messages exchanged between networked applications. :rfc:`5234` explains how a BNF must be written to specify an Internet protocol.
broadcast
a transmission mode where is same information is sent to all nodes in the network
CIDR
Classless Inter Domain Routing is the current address allocation architecture for IP version 4. It was defined in :rfc:`1518` and :rfc:`4632`.
dial-up line
A synonym for a regular telephone line, i.e. a line that can be used to dial any telephone number.
DNS
eBGP
An eBGP session is a BGP session between two directly connected routers that belong to two different Autonomous Systems. Also called an external BGP session.
EGP
Exterior Gateway Protocol. Synonym of interdomain routing protocol
EIGRP
The Enhanced Interior Gateway Routing Protocol (EIGRP) is a proprietary intradomain routing protocol that is often used in enterprise networks. EIGRP uses the DUAL algorithm described in [Garcia1993]_.
Ethernet
The most widely used LAN technology.
file transfer
A service that enables a user to send or receive a file from a distant server over the network. The File Transfer Protocol :term:`FTP` was a popular service. It has now been replaced by HTTP/HTTPs or more secure protocols such as the `SSH File Transfer Protocol <https://en.wikipedia.org/wiki/SSH_File_Transfer_Protocol>`_.
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