Cisco Systems RJ-45-to-AUX manual 384

Standard for inserting a frame tag VLAN identifier in the frame header. As a frame enters the switching fabric, it is tagged with additional information regarding the VLAN properties. The tag remains in the frame as it is forwarded between switches and is removed prior to exiting the access link to the destination interface. This process is completely transparent to the end user.

Industry Standards Architecture (ISA)

The standard of the older, more common 8−bit and 16−bit bus and card architectures. input/output (I/O)

Any operation in which data either enters a node or is sent out of a node. Institute of Electrical and Electronics Engineers (IEEE)

A professional organization that develops standards for networking and communications. Integrated Local Management Interface (ILMI)

A protocol created by the ATM forum to allow any ATM switch and ATM device to communicate using SNMP.

Integrated Services Digital Network (ISDN)

An internationally adopted standard for end−to−end digital communications over PSTN that permits telephone networks to carry data, voice, and other source traffic.

intelligent hub

A hub that contains some management or monitoring capability. interface

A device, such as a card or a plug, that connects pieces of hardware with the computer so that information can be moved from place to place (for example, between computers and printers, hard disks, and other devices, or between two or more nodes on a network).

internal IPX address

A unique eight−digit number that is used to identify a server. It is usually generated at random when the server is installed.

internal loopback address

Used for testing with TCP/IP. This address 127.0.0.1

allows a test packet to reflect back into the sending adapter to determine if it is functioning properly. International Standards Organization (ISO)

A voluntary organization, founded in 1946, that is responsible for creating international standards in many areas, including communications and computers.

Internet Assigned Numbers Authority (IANA)

The organization responsible for Internet protocol addresses, domain names, and protocol parameters. Internet Control Message Protocol (ICMP)

Network−layer Internet protocol, documented in RFC 792, that reports errors and provides other information relevant to IP packet processing.

Internet Engineering Task Force (IETF)

A group of research volunteers responsible for specifying the protocols used on the Internet and for specifying the architecture of the Internet.

Internet Group Management Protocol (IGMP)

Protocol responsible for managing and reporting IP multicast group memberships. Internet layer

In the TCP/IP architectural model, the layer responsible for the addressing, packaging, and routing functions. Protocols operating at this layer of the model are responsible for encapsulating packets into Internet datagrams. All necessary routing algorithms are run here.

Internet Network Information Center (InterNIC)

The group that provides Internet services, such as domain registration and information and directory and database services.

Internet Protocol (IP)

Network−layer protocol, documented in RFC 791, that offers a connectionless internetwork service. IP provides features for addressing, packet fragmentation and reassembly, type−of−service specification, and security.

Internet Research Task Force (IRTF)

The research arm of the Internet Architecture Board. This group performs research in areas of Internet protocols, applications, architecture, and technology.

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