A-11
Acronyms Full spelling
SPF Shortest Path First
SPT Shortest Path Tree
SSH Secure Shell
SSM Synchronization Status Marker
SSM Source-Specific Multicast
ST Shared Tree
STM-1 SDH Transport Module -1
STM-16 SDH Transport Module -16
STM-16c SDH Transport Module -16c
STM-4c SDH Transport Module -4c
STP Spanning Tree Protocol
SVC Signalling Virtual Connection
Switch-MDT Switch-Multicast Distribution Tree
T Return
TA Terminal Adapter
TACACS Terminal Access Controller Access Control System
TDM Time Division Multiplexing
TCP Transmission Control Protocol
TE Traffic Engineering
TEDB TE DataBase
TFTP Trivial File Transfer Protocol
TLS Transparent LAN Service
TLV Type-Length-Value
ToS Type of Service
TPID Tag Protocol Identifier
TRIP Trigger RIP
TS Traffic Shaping
TTL Time to Live
TTY True Type Terminal
U Return
UDP User Datagram Protocol
UPE Underlayer PE or User-end PE
URL Uniform Resource Locators
URPF Unicast Reverse Path Forwarding
USM User-Based Security Model