Introduction | Set-up | Configuration | Bootstrap | Indicators | Troubleshooting | Event Logging (syslog) | Exception Display | iocommd | Command Line Interface | Connectors and Cabling | Technical Specification | Glossary of Terms | Accessories
Glossary of Terms |
ARP |
Address Resolution Protocol (RFC826) This is the method by which ethernet network devices match IP addresses to ethernet addresses.
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BOOTP |
Bootstrap Protocol (RFC951). This protocol describes how a unit which knows little or nothing about its own IP network configuration can send out a broadcast packet and a server shall respond with various network settings.
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CHAP |
Challenge Handshake Authentication Protocol. An authentication standard that is part of PPP.
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CSLIP |
Compressed Serial Line Internet Protocol. See also SLIP.
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DHCP |
Dynamic Host Control Protocol (RFC1531). Tis is the next step on from the BOOTP protocol, (see BOOTP above). It specifies extra network settings to be passed to the network device requesting the information; it also allows for a dynamic configuration environment.
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DNS |
Domain Name Server.
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FQDN |
Fully Qualified Domain Name. See also DNS.
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Gateway |
Historically, in the Internet culture, this has been used to refer to something which is actually an IP router, although in modern terminology it refers to a device which stores and forwards data between dissimilar networks.
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HTML |
Hyper Text Markup Language.
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HTTP |
Hyper Text Transfer Protocol.
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ICMP |
Internet Control Message Protocol. Implemented at the IP layer, ICMP is used between gateways and hosts to report errors and make routing suggestions.
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IEEE |
Institute of Electrical and Electronics Engineers. Most noteable as a standards body
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IP |
Internet Protocol.
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Link |
An HTML reference to a URL. These are embedded within most HTML documents.
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Loopback |
A method by which data can be transmitted and received at a unit without it appearing to the outside world. Most useful when testing interfaces.
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MOTD |
Message of the Day. A textual message sent to all ports that have this option enabled.
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MRU |
Maximum Receive Unit. The maximum packet size which can be received over an interface. See also PPP.
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MTU |
Maximum Transmission Unit. The maximum packet size which can be transmitted over an interface. See also PPP.
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NAS |
Network Access Server. See also RADIUS.
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Netmask |
A 32 bit number (normally represented in hex) containing one bits for the network ID and subnet ID, and zero bits for the host ID. Used to route packets between subnets. See also Subnet.
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Netscape |
A company which produces a web browser product called Navigator.
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PAP |
Password Authentication Protocol. An authentication standard which is part of PPP.
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PPP |
Point to Point Protocol.
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Port |
This term can be equally valid when referring to a serial port or a network port. The serial port shall be a hardware device with a connector, whereas the network port is an assigned number based on Internet standards. For instance, a Telnet session from serial connector 4 would be utilising serial port 4 and network port 23 (at the host end) at the same time.
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RADIUS |
Remote Authentication Dial In User Service. A protocol designed by Livingston.
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RFC |
Request For Comments. These are a set of documents used within the Internet Community to design protocol implementations. Although they are not strictly specifications in the same sense as an IEEE specification, they are still adhered to by the main manufacturers of Internet products. They are generated and controlled by the Internet Engineering Task Force (IETF).
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RIP |
Routing Information Protocol.
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RS232 |
A serial data transfer protocol.
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RS422 |
A serial data transfer protocol, using balanced line drivers and receivers.
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Rlogin |
Remote Login. A BSD protocol similar to Telnet.
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SLIP |
Serial Line Internet Protocol.
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SNMP |
Simple Network Management Protocol.
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Subnet |
Sub-network. IP networks of the same network class address may be split into subnets using gateways or routers to communicate with other subnets. See also Netmask.
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Supernet |
Multiple network addresses, within the same class, described by a single routing entry.
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Syslog |
System Logger. A BSD system logging protocol.
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TCP |
Transmission Control Protocol.
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TFTP |
Trivial File Transfer Protocol. Used to download and upload files over the network.
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Telnet |
The remote terminal protocol.
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UART |
Universal Asynchronous Receiver Transmitter. A chip used to control serial data transfer. Tends to be used as a generic term referring to any serial controller, whether or not it is an asynchronous only device.
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UDP |
User Datagram Protocol. Insecure protocol sitting above IP in the network stack, analagous to TCP.
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URL |
Universal Resource Location. Part of the HTTP protocol.
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WWW |
World Wide Web. |
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