This appendix identifies abbreviations, acronyms, and initialisms used in this book and in the internetworking industry.
Many of these acronyms and other terms are also described in the Cisco Internetworking Terms and Acronyms resource, available at http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/.
3DES | Triple Data Encryption Standard. |
AAA | authentication, authorization, and accounting. |
ABR | Area Border Router. |
ACD | automatic call distribution. |
ACK | 1. acknowledgment. 2. acknowledgment bit in a TCP segment. |
ACNS | Application and Content Networking System. |
ACS | (Cisco Secure) Access Control Server. |
ADSL | asymmetric digital subscriber line. |
AES | Advanced Encryption Standard. |
AF | Assured Forwarding. |
ARP | Address Resolution Protocol. |
ASBR | Autonomous System Boundary Router. |
ASIC | application-specific integrated circuit. |
ATM | Asynchronous Transfer Mode. |
BE | Best Effort. |
BECN | backward explicit congestion notification. |
BGP | Border Gateway Protocol. |
BGP4 | BGP Version 4. |
BHT | Busy Hour Traffic. |
BPDU | bridge protocol data unit. |
bps | bits per second. |
BRI | Basic Rate Interface. |
CA | certification authority. |
CAD/CAM | Computer Aided Design/Computer Aided Manufacturing. |
CAM | content-addressable memory. |
CAR | committed access rate. |
CatOS | Catalyst Operating System. |
CBWFQ | class-based weighted fair queuing. |
CCITT | Consultative Committee for International Telegraph and Telephone. |
CCM | Cisco CallManager. |
CCS | 1. common channel signaling. 2. Centum Call Second. |
CDN | content delivery network. |
CDP | Cisco Discovery Protocol. |
CEF | Cisco Express Forwarding. |
CEO | chief executive officer. |
CERT/CC | CERT Coordination Center. |
CGMP | Cisco Group Management Protocol. |
CIDR | classless interdomain routing. |
CIR | committed information rate. |
CIS | Catalyst integrated security. |
CLNP | Connectionless Network Protocol. |
CM | 1. cable modem. 2. Campus Manager. |
CN | Content Networking. |
CO | central office. |
CoS | class of service. |
CQ | custom queuing. |
cRTP | Compressed Real-Time Transfer Protocol (or RTP header compression). |
CS | 1. common services. 2. class selector. |
CSA | Cisco Secure Agent. |
CSMA/CD | carrier sense multiple access collision detect. |
CTI | computer telephony integration. |
CTS | Clear To Send. |
CV | CiscoView. |
DA | destination address. |
DAS | directly attached storage. |
DC | demand circuit. |
DCE | data circuit-terminating equipment. |
DDoS | distributed denial of service. |
DEC | Digital Equipment Corporation. |
DES | Data Encryption Standard. |
DFM | device fault manager. |
DHCP | Dynamic Host Configuration Protocol. |
DiffServ | Differentiated Services. |
DMZ | demilitarized zone. |
DNS | Domain Name Service or Domain Name System. |
DoS | denial of service. |
DSCP | Differentiated Services Code Point. |
DSL | digital subscriber line. |
DSP | digital signal processor. |
DTE | data terminal equipment. |
DTS | distributed traffic shaping. |
DUAL | Diffusing Update Algorithm. |
EBGP | External BGP. |
ECN | explicit congestion notification. |
EF | expedited forwarding. |
EGP | Exterior Gateway Protocol. |
EIGRP | Enhanced Interior Gateway Routing Protocol. |
ES | end system. |
EUI-64 | extended universal identifier 64-bit. |
FCAPS | fault, configuration, accounting, performance, and security management (five functional areas of network management). |
FCIP | Fibre Channel IP. |
FDDI | Fiber Distributed Data Interface. |
FECN | forward explicit congestion notification. |
FIB | Forwarding Information Base. |
FIN | Finish (bit in TCP segment code field). |
FLSM | Fixed Length Subnet Mask. |
FRTS | Frame Relay traffic shaping. |
FTP | File Transfer Protocol. |
Gbps | gigabits per second. |
GLBP | Gateway Load Balancing Protocol. |
GoS | grade of service. |
GTS | Generic Traffic Shaping. |
HAN | home-area network. |
HDLC | High-Level Data Link Control. |
HIDS | host-based IDS. |
HIPS | host-based IPS. |
HR | human resources. |
HSRP | Hot Standby Router Protocol. |
HTTP | Hypertext Transfer Protocol. |
HTTPS | Secure HTTP (HTTP over SSL). |
HWIC | high-speed wireless interface card. |
Hz | hertz. |
IBGP | Internal BGP. |
ICMP | Internet Control Message Protocol. |
ID | identifier. |
IDS | intrusion detection system. |
IEEE | Institute of Electrical and Electronics Engineers. |
IETF | Internet Engineering Task Force. |
IGMP | Internet Group Management Protocol. |
IGP | Interior Gateway Protocol. |
IGRP | Interior Gateway Routing Protocol. |
IIS | Internet Information Server. |
IM | instant messaging. |
IntServ | Integrated Services. |
IPCC | IP contact center. |
IPM | internetwork performance monitor. |
IPS | intrusion prevention system. |
IPsec | IP security. |
IP/TV | Internet Protocol Television. |
IPv4 | IP version 4. |
IPv6 | IP version 6. |
IPX | Internetwork Packet Exchange. |
IS | 1. information systems. 2. intermediate system. |
iSCSI | small computer systems interface over IP. |
ISDN | Integrated Services Digital Network. |
IS-IS | Intermediate System-to-Intermediate System. |
ISL | Inter-Switch Link. |
ISO | International Organization for Standardization. |
ISP | Internet service provider. |
IT | information technology. |
ITU-T | International Telecommunication Union Telecommunication Standardization Sector. |
kbps | kilobits per second. |
LCD | liquid crystal display. |
LFI | Link Fragmentation and Interleaving. |
LLC | Logical Link Control. |
LLQ | low latency queuing. |
LMS | LAN management solution. |
LSA | link-state advertisement. |
LSU | link-state update. |
MAC | Media Access Control. |
MB | megabyte. |
Mbps | megabits per second. |
MCS | media convergence server. |
MD5 | message digest algorithm 5. |
MGCP | Media Gateway Control Protocol. |
MIB | Management Information Base. |
MISTP | Multiple Instance STP. |
MLS | multilayer switching. |
MLSP | Multilayer Switching Protocol. |
MLS-RP | MLS route processor. |
MLS-SE | MLS switching engine. |
MOS | mean opinion score. |
ms | millisecond. |
MTU | maximum transmission unit. |
NAC | Network Admission Control. |
NAD | network access device. |
NAS | network attached storage. |
NAT | Network Address Translation. |
NBAR | network-based application recognition. |
NBMA | nonbroadcast multiaccess. |
NFS | Network File System. |
NIC | 1. network interface card. 2. Network Information Center. |
NIDS | network-based intrusion detection system. |
NNM | network node manager. |
NSAP | network service access point. |
NSF | nonstop forwarding. |
OOB | out-of-band signaling. |
OS | operating system. |
OSI | Open Systems Interconnection. |
OSPF | Open Shortest Path First. |
OTP | one-time password. |
OUI | Organizational Unique Identifier. |
PAM | pulse amplitude modulation. |
PBX | private branch exchange. |
PCM | pulse code modulation. |
PDA | personal digital assistant. |
PDIOO | plan, design, implement, operate, and optimize. |
PDLM | packet description language module. |
PDU | protocol data unit. |
PGP | Pretty Good Privacy. |
PHB | Per hop behavior. |
PIM | Protocol Independent Multicast. |
PIN | personal identification number. |
PIPEDA | Personal Information Protection and Electronic Documents Act. |
PIX | Private Internet Exchange. |
PKI | public-key infrastructure. |
PoE | Power over Ethernet. |
POP3 | Post Office Protocol version 3. |
PPP | Point-to-Point Protocol. |
pps | packets per second. |
PQ | priority queuing. |
PRC | partial route calculation. |
PRI | Primary Rate Interface |
PSTN | public switched telephone network. |
PVC | permanent virtual circuit. |
PVLAN | private VLAN. |
PVST | per-VLAN spanning tree. |
PVST+ | per-VLAN spanning tree plus. |
QoS | quality of service. |
R&D | research and development. |
RED | random early detection. |
RF | radio frequency. |
RFC | Requests For Comments. |
RFID | radio frequency identification. |
RIP | Routing Information Protocol. |
RIPv1 | Routing Information Protocol version 1. |
RIPv2 | Routing Information Protocol version 2. |
RM | RF management. |
RME | Resource Manager Essentials. |
RMON | Remote Monitoring. |
ROI | return on investment. |
RP | rendezvous point. |
RPF | Reverse Path Forwarding. |
RSM | Route Switch Module. |
RST | Reset (bit in TCP segment code field). |
RSTP | Rapid STP. |
RSVP | Resource Reservation Protocol. |
RTP | Real-Time Transport Protocol. |
RTS | Request To Send. |
SA | source address. |
SAA | service assurance agent. |
SAN | storage area networking. |
SB | senate bill. |
SCSI | small computer systems interface. |
SLA | service level agreement. |
SLB | server load balancing. |
SLC | service level contract. |
SMB | small to medium business. |
SMTP | Simple Mail Transfer Protocol. |
SNMP | Simple Network Management Protocol. |
SNMPv1 | SNMP version 1. |
SNMPv2 | SNMP version 2. |
SNMPv3 | SNMP version 3. |
SOX | Sarbanes-Oxley. |
SPAN | Switched Port Analyzer. |
SPF | shortest path first. |
SRST | Survivable Remote Site Telephony. |
SSH | secure shell. |
SSID | Service Set Identifier. |
SSL | Secure Socket Layer. |
SSO | stateful switchover. |
STP | 1. shielded twisted-pair. 2. Spanning Tree Protocol. |
SVC | switched virtual circuit. |
SWAN | Structured Wireless-Aware Network. |
SYN | Synchronize (bit in a TCP segment code field). |
TACACS | Terminal Access Controller Access Control System. |
TCO | total cost of ownership. |
TCP | Transmission Control Protocol. |
TCP/IP | Transmission Control Protocol/Internet Protocol. |
TFTP | Trivial File Transfer Protocol. |
TKIP | Temporal Key Integrity Protocol. |
ToS | type of service. |
TTL | Time To Live. |
UDP | User Datagram Protocol. |
USB | Universal Serial Bus. |
UTP | unshielded twisted-pair. |
VAD | voice activity detection. |
VC | virtual circuit. |
VIP | Versatile Interface Processor. |
VLAN | virtual LAN. |
VLSM | variable-length subnet mask. |
VMPS | VLAN Membership Policy Server. |
VMS | VPN/Security Management Solution. |
VoD | video on demand. |
VoIP | Voice over IP. |
VPN | virtual private network. |
VRRP | Virtual Router Redundancy Protocol. |
VTP | VLAN Trunking Protocol. |
WAP | wireless access point. |
WCCP | Web Cache Communication Protocol. |
WDS | 1. Wireless Domain Services. 2. Wireless Distribution System. |
WEP | Wired Equivalent Privacy. |
WFQ | weighted fair queuing. |
WIDS | wireless intrusion detection system. |
Wi-Fi | wireless fidelity. |
WLAN | wireless local-area network. |
WLSE | wireless LAN solutions engine. |
WLSM | wireless LAN service module. |
WPA | Wi-Fi Protected Access. |
WRED | weighted random early detection. |
XML | extensible markup language. |
