Glossary
122
Cisco CRS-1 Series Carrier Routing System XML API Guide
OL-4596-01
G
Gbps
Gigabits per second. The amount of data that can be transmitted in a fixed amount of time. 1 gigabit =
2
30
bits, 1,073,741,824 bits.
H
HTTP
Hypertext Transfer Protocol. Used by web browsers and web servers to transfer files, such as text and
graphic files. The Hypertext Transfer Protocol (HTTP) is the set of rules for exchanging files (text,
graphic images, sound, video, and other multimedia files) on the World Wide Web. Relative to the
TCP/IP suite of protocols (which are the basis for information exchange on the Internet), HTTP is an
application protocol.
Hypertext Transfer
Protocol
See HTTP.
I
IDL
Interface Definition Language. External client applications use CORBA IDL to exchange XML encoded
request and response streams with the CORBA XML agent running on the router
IIOP
Internet Inter-ORB Protocol (IIOP). The protocol used for accessing objects across the Internet.
IOR
Interoperable Object Reference. A bundle of data that is used by a CORBA application to determine
how to connect to a server and send requests to an object.
IOS XR
The Cisco operating system used on Cisco CRS-1 Series routers.
L
line card
See Modular Services Card. Line cards are now referred to as MCSs in the Cisco CRS-1 Series router.
LR
Logical Router. A Cisco CRS-1 Series routing system can be partitioned into several logical routers,
each of which is managed independently. The Cisco CRS-1 Series router and LR are used
interchangeably in this document.
M
Modular Services
Card
Module where the ingress and egress packet processing and queuing functions are carried out in the
Cisco CRS-1 Series router architecture. Up to 16 MSCs are installed in a line card chassis; each MSC
must have an associated PLIM (of which there are several types to provide a variety of physical
interfaces). The MSC and PLIM mate together on the line card chassis mid-plane.
MSCs are also referred to as line cards.
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