Juniper Networks Field Guide and Reference

Internet Assigned Numbers Authority. Regulatory group that maintains all assigned and registered Internet numbers , such as IP and multicast addresses.

Internal BGP. BGP configuration in which sessions are established between routers in the same ASs.

Internet Control Message Protocol. Used in router discovery, ICMP allows router advertisements that enable a host to discover addresses of operating routers on the subnet.

Integrated Drive Electronics. Type of hard disk on the Routing Engine.

International Electrotechnical Commission.

Institute of Electronic and Electrical Engineers. International professional society for electrical engineers .

Internet Engineering Task Force. International community of network designers, operators, vendors , and researchers concerned with the evolution of the Internet architecture and the smooth operation of the Internet.

Internet Group Membership Protocol. Used with multicast protocols to determine whether group members are present.

Interior gateway protocol, such as IS-IS, OSPF, and RIP.

To install routes from the routing protocols into a routing table.

In MPLS, first router in a label-switched path (LSP).

Routing of packets among different ASs.

In a BGP route reflection, the redistribution of routing information by a route reflector system to all nonclient peers (BGP peers not in the cluster).

Routes that are in the routing table because an interface has been configured with an IP address. Also called direct routes.

In IS-IS, network entity that sends and receives packets and that can also route packets.

The routing of packets within a single AS.

Internet Protocol. The protocol used for sending data from one point to another on the Internet.

Intermediate System-to-Intermediate System protocol. Link-state, interior gateway routing protocol for IP networks that also uses the shortest-path first (SPF) algorithm to determine routes.

International Organization for Standardization. Worldwide federation of standards bodies that promotes international standardization and publishes international agreements as International Standards.

Internet service provider. Company that provides access to the Internet and related services.

International Telecommunications Union (formerly known as the CCITT). Group supported by the United Nations that makes recommendations and coordinates the development of telecommunications standards for the entire world.