Cisco ESR10008 Hardware Installation Guide - Page 162
Terminal Access Controller Access Control System. Authentication protocol, developed by the DDN
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Glossary Simple Network Management Protocol Single-mode fiber SMF SNMP SNMP2 SONET SR SRAM Subrate DS3 Synchronous Optical Network See SNMP. See SMF. Single-mode fiber. Fiber-optic cabling with a narrow core that allows light to enter only at a single angle. Such cabling has higher bandwidth than multimode fiber, but requires a light source with a narrow spectral width (for example, a laser). Also called monomode fiber. See also Multimode fiber. Simple Network Management Protocol. Network management protocol used almost exclusively in TCP/IP networks. SNMP provides a means to monitor and control network devices, and to manage configurations, statistics collection, performance, and security. See also SNMP2. SNMP Version 2. Version 2 of the network management protocol. SNMP2 supports centralized as well as distributed network management strategies, and includes improvements in the SMI, protocol operations, management architecture, and security. See also SNMP. Synchronous Optical Network. High-speed synchronous network specification developed by Bellcore and designed to run on optical fiber. STS-1 is the basic building block of SONET. It was approved as an international standard in 1988. Short reach. SONET/SDH specification for transmit power and receive sensitivity that achieves a 1.2-mile (2 km) reach. A type of RAM that retains its contents for as long as power is supplied. SRAM does not require constant refreshing, like DRAM. Compare with DRAM. A generic term to describe a process in which the bandwidth of a clear channel DS3 is limited to a lower rate. Several proprietary formats exist. See SONET. T T1 T3 TAC TACACS TACACS+ Digital WAN carrier facility. T1 transmits DS1-formatted data at 1.544 Mbps through the telephone switching network. Digital WAN carrier facility. T3 transmits DS3-formatted data at 44.736 Mbps through the telephone switching network. A Cisco Technical Assistance Center. There are four TACs worldwide. 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. Terminal Access Controller Access Control System Plus. Proprietary Cisco enhancement to Terminal Access Controller Access Control System (TACACS). Provides additional support for authentication, authorization, and accounting. GL-12 Cisco 10008 Router Hardware Installation Guide OL-0659-13
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