F-G

fabric

Also called a switching fabric; a hardware mechanism used to interconnect multiple functional units such as the interconnection among the input and the output ports.

fast Ethernet

Ethernet technology that operates at 100 Mbps.

fast path

The path that a normal/frequently encountered packet follows in the system implementation (hardware or software).

FIB

see Forwarding Information Base.

flash

A read–write semiconductor device used for storage of code and/or data. Code can be run out of flash.

flooding

A technique where an incoming packet is copied and sent to all outgoing interfaces.

flow

A group of packets of one general type.

flow control

A set of techniques in which a receiver is able to moderate the rate of a sender.

ForCES

Forwarding and Control Element Separation. A working group in the IETF which attempts to standardize the framework and associated mechanisms for the exchange of information between a control (plane) element (CE) and a forwarding (plane) element (FE).

forwarding information base (FIB)

The subset of routes extracted from the Routing Information Base (RIB) by the RTM and distributed to the various forwarding elements.

fragmentation

The process of dividing a packet when its datagram exceeds the MTU (Maximum Transmission Unit) of the network over which it is traveling.

fragmentation/reassembly

Used in IP where messages larger than the MTU (Maximum Transmission Unit—i.e., max packet size) of an attached network are divided into smaller packets called fragments and sent towards the destination. The destination IP layer reassembles the various fragments and provides it as one single IP packet to its higher layer.

frame

The name given to the packet recognized by the hardware.

frame relay

A connection-oriented, public packet–switched service offered by the service provider.

FTP

File Transfer Protocol. A protocol used for file transfer between hosts in the TCP/IP world. FTP runs over TCP.

functional interface

Same as Procedural Interface. An interface between two modules or submodules where function or procedure calls are used, as opposed to sending and receiving messages between them.

gateway

A internetworking device capable of relaying user information among networks with different architectures and protocol suites. Another name for a router.

gigabit Ethernet

Ethernet technology that operates at 1 Gbps.

GPP

General Purpose Processor. Used to describe a processor which is able to run general-purpose code. Examples include common control plane processors like the MIPS and PowerPC line. In contrast, a network processor is a special-purpose processor.

GVRP

Generic VLAN Registration Protocol as defined in IEEE 802.1Q for updating VLAN membership information between switches. Switches send GVRP messages between each other to update the membership information.



Designing Embedded Communications Software
Designing Embedded Communications Software
ISBN: 157820125X
EAN: 2147483647
Year: 2003
Pages: 126
Authors: T. Sridhar

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