Common Networking Acronyms

These are common computer networking acronyms that you must know and you will encounter if you are in Information Technology (IT) or Telecommunication (Telco) industry especially if your are working as network and systems engineer.

Acronyms Meaning
ACL Access Control List
AD Advertised Distance
AS Autonomous System
ASA Adaptive Security Appliance
ARP Address Resolution Protocol
BER Bit Error Rate
BGP Border Gateway Protocol
CDN Content Delivery Network
CIDR Classless Inter-Domain Routing
CIR Committed Information Rate
CLI Command Line Interpreter
CMTS Cable Modem Termination System
CPE Customer Premises Equipment
CPU Central Processing Unit
CRC Cyclic Redundancy Check
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
DOCSIS Data Over Cable Service Interface Specification
DOS Denial of Service
DSCP Differentiated Services Code Point
DSLAM DSL Access Multiplexer
DSL Digital Subscriber Line
DWDM Digital Wavelength Dense Multiplexing
EIGRP Enhanced Interior Gateway Routing Protocol
FIB Forward Information Base
FTP File Transfer Protocol
FTTH Fiber to the Home
GE Gigabit Ethernet
GLBP Gateway Load Balancing Protocol
GPRS General Packet Radio Service
GRE Generic Routing Encapsulation
GSM Global System for Mobile
HDLC High Level Data Link Control
HTTP Hyper Text Transfer Protocol
IaaS Infrastructure as aa Service
IANA Internet Assigned Number Authority
ICMP Internet Control Message Protocol
IDS Intrusion Detection System
IEEE Institute for Electrical and Electronic Engineers
IETF Internet Engineering Task Force
IGMP Internet Group Management Protocol
IGP Interior Gateway Protocol
IGRP Interior Gateway Routing Protocol
IKE Internet Key Exchange
IPSEC Internet Protocol Security
IPTV Internet Protocol Television
IP Internet Protocol
IPS Intrusion Prevention System
IS-IS Intermediate System to Intermediate System
ISP Internet Service Provider
ISSU In-Service Software Upgrade
IT Information Technology
IX Internet Exchange
L2TP Layer 2 Tunnel Protocol
LACP Link Aggregation Control Protocol
LAG Link Aggregation
LAN Local Area Network
LDP Label Distribution Protocol
MAC Media Access Control
MD5 Message Digest 5
MDF Main Distribution Frame
MIB Management Information Base
MLP Multilink Point-to-Point Protocol
MPLS Multi Protocol Label Switching
MTU Maximum Transmission Unit
NAS Network-Attached Storage
NAT Network Address Translation
NBMA Non-Broadcast Multiple Access
NFV Network Function Virtualization
NMS Network Monitoring System
NIC Network Interface Card
NTP network Time Protocol
OID Object Identifier
OLT Optical Line Terminator
ONT Optical Network Terminator
OS Operating System
OSI Open System Interconnect
OSPF Open Shortest Path First
OTN Optical Tranport Network
PAT Port Address Translation
PBR Policy-Based Routing
PBX Private Branch Exchange
PDU Protocol Data Unit
PE Provider Edge
PIM Protocol Independent Multicast
POP Point of Presence
PPP Point-to-Point Protocol
PPTP Point-to-Point Tunneling Protocol
PSTN Public Switched Telephone Network
PVC Permanent Virtual Connection
PVST Per-VLAN Spanning Tree
QOE Quality of Experience
QOS Quality of Service
RADIUS Remote Authentication Dial-in User Service
RAM Random Access Memory
RFC Request for Comments
RIP Routing Information Protocol
ROM Read-Only Memory
RP Rendezvous Point
RPF Reverse Path Forwarding
RSTP Rapid Spanning Tree Protocol
RSVP Resource Reservation Protocol
RTP Real-time Transport Protocol
SaaS Software as a Service
SASE Secure Access Service Edge
SDN Software Defined Networking
SD-WAN Software Defined Wide Area Network
SFP Small Form-factor Pluggable
SMTP Simple Mail Transfer Protocol
SNMP Simple Network Management Protocol
SS7 Signaling System 7
SSH Secure Shell
SSID Service Set Identifier
SSO Stateful Switch Over
STP Spanning Tree Protocol
TCP/IP Transmission Control Protocol / Internet Protocol
TFTP Trivial File Transfer Protocol
TOS Type of Service
TTL Time to Live
UDP User Datagram Protocol
URL Uniform Resource Locator
URPF Unicast Reverse Path Forwading
USB Universal Serial Bus
VC Virtual Circuit
VLAN Virtual Local Area Network
VLSM Variable Length Subnet Masking
VM Virtual Machine
VNF Virtual Network Functions
VOD Video on Demand
VOIP Voice Over IP
VPN Virtual Private Network
VRRP Virtual Router Redundancy Protocol
VTP VLAN Trunking Protocol
WAN Wide Area Network
WWW World Wide Web

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