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Glossary

IGMP Query process

The router uses IGMP to query hosts for Member-

ship Reports, thus managing multicast on its interfaces.

IGP

Interior Gateway Protocol: Any protocol used by the Internet to

exchange routing data within an independent system. Examples include RIP,
IGRP, and OSPF.

ILMI

Integrated (or Interim) Local Management Interface. A specification

created by the ATM Forum, designated for the incorporation of network-
management capability into the ATM UNI. Integrated Local Management
Interface cells provide for automatic configuration between ATM systems.
In LAN emulation, ILMI can provide sufficient information for the ATM
end station to find an LECS. In addition, ILMI provides the ATM NSAP
(Network Service Access Point) prefix information to the end station.

in-band management

In-band management is the management of a net-

work device "through" the network. Examples include using Simple Net-
work Management Protocol (SNMP) or Telnet directly via the local LAN.
Compare with: out-of-band management.

in-band signaling

Configuration of a router from within the network.

Examples are Telnet, Simple Network Management Protocol (SNMP), or a
Network Management Station (NMS).

insured burst

In an ATM network, it is the largest, temporarily permitted

data burst exceeding the insured rate on a PVC and not tagged by the traffic
policing function for being dropped if network congestion occurs. This
insured burst is designated in bytes or cells.

interarea routing

Routing between two or more logical areas. Contrast

with: intra-area routing. See also: area.

interface processor

Any of several processor modules used with Cisco

7000 series routers. See also: AIP, CIP, EIP, FEIP, HIP, MIP, and TRIP.

internal route processors

Route Switch Modules (RSM) and Route

Switch Feature Cards (RSFC) are called internal route processors because the
processing of layer 3 packets is internal to a switch.

Internet

The global "network of networks," whose popularity has

exploded in the last few years. Originally a tool for collaborative academic

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