Cisco 10008 Hardware Installation Manual page 156

Glossary
G
Gigabit Ethernet converter. An interface module used by gigabit Ethernet and Fibre Channel to convert
GBIC
the serial electrical signals to the transmission medium's physical layer signalling, which is typically
optical. GBIC modules can be hot swapped and contain ID and system information that a switch or
router can use to determine the network device's capabilities. Different GBICs handle different types
of fiber cable. See 1000BaseLX/LH, 1000BaseSX, and 1000BaseZX.
Gigabit Ethernet. Ethernet running at a transmission speed of 1 billion bits per second.
Gigabit Ethernet
See GBIC.
Gigabit Interface
Converter
H
Feature that permits the addition, replacement, or removal of cards without interrupting the system
Hot swapping
power, entering console commands, or causing other software or interfaces to shut down. Sometimes
called online insertion and removal (OIR).
I
Institute of Electrical and Electronics Engineers. Professional organization whose activities include the
IEEE
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
IEEE 802.3
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.
See IEEE.
Institute of Electrical
and Electronics
Engineers
See IR.
Intermediate reach
See ISP.
Internet service
provider
Internet Operating System. See
IOS
Internet Protocol. Network layer protocol in the TCP/IP stack offering a connectionless internetwork
IP
service. IP provides features for addressing, type-of-service specification, fragmentation and
reassembly, and security. Defined in RFC 791.
Routing technique that allows IP traffic to be propagated from one source to a number of destinations
IP multicast
or from many sources to many destinations. Rather than sending one packet to each destination, one
packet is sent to a multicast group identified by a single IP destination group address.
Cisco 10008 Router Hardware Installation Guide
GL-6
Cisco IOS.
OL-0659-13