Hitachi GS4000 Series Installation Manual page 10

GS4000 Installation Guide Revision 4.00
SSAP Source Service Access Point
TA Terminal Adapter
TCP/IP Transmission Control Protocol/Internet Protocol
TLA ID Top-Level Aggregation Identifier
TOS Type Of Service
TPID Tag Protocol Identifier
TTL Time To Live
T/R Transmitter/Receiver
UBR Unspecified Bit Rate
UDP User Datagram Protocol
UL Underwriters Laboratories, Inc. (http://www.ul.com)
UPC Usage Parameter Control
UPS Uninterruptible Power System
UTP Unshielded Twisted Pair
VBR Variable Bit Rate
VC Virtual Channel/Virtual Call/Virtual Circuit
VCI Virtual Channel Identifier
VLAN Virtual LAN
VP Virtual Path
VPI Virtual Path Identifier
VPN Virtual Private Network
VRRP Virtual Router Redundancy Protocol
WAN Wide Area Network
WFQ Weighted Fair Queuing
WWW World-Wide Web
XFP 10 Gigabit small form factor, pluggable
IEEE 802.1p: This is not the official name of the standards since IEEE 802.1p standards
have been integrated into IEEE 802.1d; however, it is in broad general use as the name of
standards specifying QoS L2 user priority.
GR4000/GS4000 Specific
BCU Basic Control Unit
CP Multilayer Control Processor
MC Compact flash Memory Card
NIF Network Interface Module
PRU Packet Routing Unit (GR4000)
PSU Packet Switching Unit (GS4000)
PS Power Supply
RM Routing Manager
S/W Software
Numerical Conversion
1KB 2 to the 10th power (1,024 bytes)
1MB 2 to the 20th power (1,048,576 bytes)
1GB 2 to the 30th power (1,073,741,824 bytes)
1 kbps 10 to the 3rd power bits/s (1,000bit/s)
1 Mbps 10 to the 6th power bits/s (1,000,000bit/s)
1 Gbps 10 to the 9th power bits/s (1,000,000,000bit/s)
1kpacket/s 10 to the 3rd power packets/s (1,000packet/s)
1Mpacket/s 10 to the 6th power packets/s (1,000,000packet/s)
1Gpacket/s 10 to the 9th power packets/s (1,000,000,000packet/s)
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