Cisco CRS-1 - Carrier Routing System Router Getting Started Guide

Glossary
GL-17
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
T
TAC
Cisco Technical Assistance Center.
TACACS
Terminal Access Controller Access Control System. Authentication protocol, developed by the DDN
community, that provides remote access authentication and related services, such as event logging.
User passwords are administered in a central database rather than in individual routers, providing an
easily scalable network security solution.
target configuration
A “two-stage” configuration of the Cisco IOS-XR running configuration. This allows users to make
changes to the running configuration and accept these changes by entering the
commit command.
task ID
An identifier that determines user access to a given command or series of commands. A user must be
a member of a group with the appropriate task IDs assigned to it in order to execute the related
commands.
Tbps
terabits per second. The amount of data that can be sent in a fixed amount of time. 1 terabit = 2
40
bits,
1,099,511,627,776 bits.
TCP
Transmission Control Protocol. Connection-oriented transport layer protocol that provides reliable
full-duplex data transmission. TCP is part of the TCP/IP protocol stack.
Telnet
Standard terminal emulation protocol in the TCP/IP protocol stack. Telnet is used for remote terminal
connection, enabling users to log in to remote systems and use resources as if they were connected to
a local system. Telnet is defined in RFC 854.
terabyte
A unit of computer memory or data storage capacity equal to 1024 gigabytes (2
40
bytes).
Approximately 1 trillion bytes.
TFTP
Trivial File Transfer Protocol. A simplified version of FTP that allows files to be transferred from one
computer to another over a network, usually without the use of client authentication (for example,
username and password).
Note: some TFTP servers (such as Sun Solaris) may not support file sizes larger that 32 MB.
TLU
table lookup.
trap
Message sent by an SNMP agent to an NMS, a console, or a terminal to indicate the occurrence of a
significant event, such as a specifically defined condition or a threshold that was reached.
tunnel
Secure communication path between two peers, such as two routers.
Tx
The transmitter end of a fabric link. All links are unidirectional. See also Rx.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English