324 PATROL DashBoard User Guide
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
incremental
A router discovery option that skips the discovery of devices already discovered in PATROL
DashBoard.
IGMP
See Internet Group Management Protocol (IGMP).
IGP
See Interior Gateway Protocol (IGP).
indicator
A metric associated with a device or one of its components (such as a communication interface,
the device memory, or a CPU) to measure performance, such as data throughput, transmission
errors, transmission times, and so forth.
installation image
A disk copy of a customized product, suitable for installation; avoids using the original CD or
other distribution medium and the initial customization process for a new installation.
installation utility
A tool that largely automates the installation of a software product by prompting the user for
options and actions at each step.
interface
A component displayed as a subordinate object to a device in the PATROL DashBoard
navigation tree. DLCIs, VPs, VCs, and CoSs are examples of interfaces.
Interior Gateway Protocol (IGP)
A protocol for exchanging routing information between gateways (hosts with routers) within an
autonomous network (for example, a system of corporate local area networks).
Internet Control Message Protocol (ICMP)
A message control and error-reporting protocol between a host server and a gateway to the
Internet. ICMP uses Internet Protocol (IP) datagrams, but the messages are processed by the IP
software and are not directly apparent to the application user.
Internet Group Management Protocol (IGMP)
An Internet protocol that provides a way for an Internet computer to report its multicast group
membership to adjacent routers.
Internet Protocol (IP)
The layer 3 stack of Internet. IP current version is version 4, abbreviated IPv4. Its defines 32-bit
addresses for Internet devices. IPng (ng standing for New Generation) is a new version of the
Internet Protocol, designed as an upgrading compatible successor to IP version 4. IPng is
assigned IP version number 6 and is formally called IPv6. IPng increases the IP address size
from 32 bits to 128 bits, to support more levels of addressing hierarchy and a much greater
number of addressable nodes, and simpler auto-configuration of addresses.
