Index

Appendix D. Abbreviations

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.