Cisco Cisco Prime Network Analysis Module Software 5.1 インストールガイド

Generic routing encapsulation. Tunneling protocol developed by Cisco that 
can encapsulate a wide variety of protocol packet types inside IP tunnels, 
creating a virtual point-to-point link to Cisco routers at remote points over 
an IP internetwork. By connecting multiprotocol subnetworks in a 
single-protocol backbone environment, IP tunneling using GRE allows 
network expansion across a single-protocol backbone environment.

Graphical user interface. A user environment that uses pictorial as well as 
textual representations of the input and the output of applications and the 
hierarchical or other data structure in which information is stored. Such 
conventions as buttons, icons, and windows are typical, and many actions are 
performed using a pointing device (such as a mouse). Microsoft Windows 
and the Apple Macintosh are prominent examples of platforms using a GUI.

helper
(previously known as 
boothelper)

A small subset of the system software that runs on the module. It boots the 
module from the network and assists in software installation and upgrades, 
disaster recovery, and other operations when the module cannot access its 
software.

Routing technique that allows IP traffic to be propagated from one source to 
a number of destinations 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. 

Management Information Base. Database of network management 
information that is used and maintained by a network management protocol, 
such as SNMP or Common Management Information Protocol (CMIP). The 
value of a MIB object can be changed or retrieved using SNMP or CMIP 
commands, usually through a GUI network management system. MIB 
objects are organized in a tree structure that includes public (standard) and 
private (proprietary) branches.

Network Address Translation. Mechanism for reducing the need for globally 
unique IP addresses. NAT allows an organization with addresses that are not 
globally unique to connect to the Internet by translating those addresses into 
globally routable address space. Also known as Network Address Translator.

A feature of some routers that allows them to categorize incoming packets 
into flows. Because packets in a flow often can be treated in the same way, 
this classification can be used to bypass some of the work of the router and 
accelerate its switching operation.

Type of network module.

Network Time Protocol. Protocol built on top of TCP that ensures accurate 
local time-keeping with reference to radio and atomic clocks located on the 
Internet. This protocol is capable of synchronizing distributed clocks within 
milliseconds over long time periods.

Peripheral Component Interconnect. An industry local bus standard.

Quality of Service. Cisco IOS QoS technology lets complex networks control 
and predictably service a variety of networked applications and traffic types.

Content-networking product (hardware plus software) that accelerates 
content delivery, ensuring maximum scalability and availability of content.