Cisco Router IOS XR Getting Started Manual page 209

Simple Network Management Protocol. SNMP is the protocol governing network management and the
SNMP
monitoring of network devices and their functions. It is not necessarily limited to TCP/IP networks.
Simple Network Management Protocol Version 3. An interoperable standards-based protocol for
SNMPv3
network management. SNMPv3 provides secure access to devices by a combination of authenticating
and encrypting packets over the network.
A list of packages activated for a particular node. A software configuration consists of a boot package
software
and additional feature packages.
configuration
Synchronous Optical Network. A standard format for transporting a wide range of digital
SONET
telecommunications services over optical fiber. SONET is characterized by standard line rates, optical
interfaces, and signal formats. See also SDH.
service processor. An SP on each card maintains an internal management connection to the shelf
SP
controller for the rack. The SP is referred to in CLI commands to identify the nodeID for fabric, alarm
and fan controller cards.
Example:
RP/0/RPO/CPU:router# admin show controllers fabric connectivity location 0/SM0/SP
Synchronous Payload Envelope. Portion of the SONET frame containing overhead information (POH
SPE
and user data).
shortest path first. Routing algorithm that iterates on length of path to determine a shortest-path
SPF
spanning tree. Commonly used in link-state routing algorithms. Sometimes called Dijkstra's algorithm.
Secure Shell. A protocol that provides a secure remote connection to a router through a Transmission
SSH
Control Protocol (TCP) application.
secure socket layer. A secure socket between two entities with authentication.
SSL
Denotes an inactive card or process that waits to become active; standby cards or processes are also
standby
sometimes denoted as backup.
The router configuration designated to be applied on the next router startup.
startup
configuration
subinterface
Virtual interfaces created on a hardware interface. These software-defined interfaces allow for
segregation of traffic into separate logical channels on a single hardware interface and better utilization
of the available bandwidth on the physical interface.
A switch between the active and standby cards. The switchover can be initiated by command, or it can
switchover
occur automatically when the active card fails.
Reload of a router node.
system reload
Soft reset of a router node. This involves restarting all processes running on that node.
system restart
T
Cisco Technical Assistance Center.
TAC
OL-10957-02
Cisco IOS XR Getting Started Guide
Glossary
GL-11