Glossary
Frame Relay | |
| encapsulation between connected devices. Frame Relay is more efficient than X.25, the protocol for |
| which it is generally considered a replacement. |
FRU | Field replaceable unit. A component that can be removed from a network device and replaced in the |
| field. Line cards, power modules, and fan modules are typically FRUs. |
G
GBIC
Gigabit Ethernet
Gigabit Interface Converter
Gigabit Ethernet converter. An interface module used by gigabit Ethernet and Fibre Channel to convert the serial electrical signals to the transmission medium’s physical layer signalling, which is typically optical. GBIC modules can be
Gigabit Ethernet. Ethernet running at a transmission speed of 1 billion bits per second.
See GBIC.
H
HHGE
Hot swapping
Feature that permits the addition, replacement, or removal of cards without interrupting the system power, entering console commands, or causing other software or interfaces to shut down. Sometimes called online insertion and removal (OIR).
I
IEEE
IEEE 802.3
Institute of Electrical and Electronics Engineers. Professional organization whose activities include the development of communications and network standards. IEEE LAN standards are the currently predominant LAN standards.
IEEE LAN protocol that specifies an implementation of the physical layer and the MAC sublayer of the data link layer. IEEE 802.3 uses CSMA/CD access at a variety of speeds over a variety of physical media. Extensions to the IEEE 802.3 standard specify implementations for Fast Ethernet and gigabit Ethernet.
Institute of Electrical | See IEEE. |
and Electronics |
|
Engineers |
|
Intermediate reach | See IR. |
Internet service | See ISP. |
provider
| Cisco uBR10012 Universal Broadband Router Hardware Installation Guide |
|
