Acronym | Definition |
1DM | One-way Delay Measurement |
6PE | IPv6 Provider Edge router. An MPLS IPv4 core network that supports IPv6 domains which communicate over an IES service. |
6VPE | IPv6 Provider Edge router with IP-VPN Services. An MPLS IPv4 core network that supports the communication using IPv6 VPRN services. |
2G | Second-generation wireless telephone technology |
3DES | Triple DES (data encryption standard) |
3G | Third-generation mobile telephone technology |
4G | Fourth-generation mobile telephone technology |
5G | Fifth-generation mobile telephone technology |
NSP NFM-P | Network Services Platform Network Functions Manager - Packet |
1830 PSS | 1830 Photonic Service Switch |
7705 SAR | 7705 Service Aggregation Router |
7210 SAS | 7210 Service Access Switch |
7450 ESS | 7450 Ethernet Service Switch |
7705 SAR | 7705 Service Aggregation Router |
7705 SAR-Hm | 7705 Service Aggregation Router (vSR-based) |
7750 SR | 7750 Service Router |
7950 XRS | 7950 eXtensible Routing System |
Acronym | Definition |
AA | Application Assurance |
AA-ISA | Application Aware Integrated Service Adapter |
AAA | AA-Answer |
AAL | ATM Adaptation Layer |
AAL5 | ATM Adaptation Layer 5 |
AAR | AA-Request |
AARP | AA Redundancy Protocol |
ABM | Asynchronous Balanced Mode |
ABR | Area Border Router Available Bit Rate |
AC | Alternating Current Attachment Circuit |
ACA | Accounting-Answer |
ACCM | Async-Control-Character-Map |
ACFC | Address and Control Field Compression |
ACH | Associated Channel |
ACK | Acknowledgment |
ACL | Access Control List, also called filter policy |
ACR | Accounting-Request Adaptive Clock Recovery |
ADC | Application Detection and Control |
ADI | Ad Insertion |
ADI-LZ | Ad Insertion Local and Zoned |
ADM | Add/Drop Multiplexer |
ADP | Active Diameter Proxy Automatic Discovery Protocol |
AFI | Address Family Identifier Authority and Format Identifier |
AFTR | Address Family Transition Router |
AGI | Address Group Identifier |
AIGP | Accumulated IGP |
AII | Attachment Individual Identifier |
AIS | Alarm Indication Signal |
ALE | Access-Loop-Encapsulation |
ALG | Application-Level Gateway |
ALMP | Auto-Learn-Mac-Protect |
ALTO | Application Layer Traffic Optimiser |
AMI | Alternate Mark Inversion |
AN | Association Number |
AMO | Any Mode of Operation |
ANSI | American National Standards Institute |
ANCP | Access Node Control Protocol |
ANL | Access Network Location |
API | Application Programming Interface |
APN | Access Point Name |
Apipe | ATM VLL |
AP | Access Point |
APN | Access Point Name |
APS | Automatic Protection Switching |
AQP | Application QoS Policies |
ARFCN | Absolute Radio-Frequency Channel Number |
ARP | Address Resolution Protocol |
A/S | Active/Standby |
AS | Autonomous System |
ASAP | Any Service Any Port |
ASAM | Advanced Services Access Manager |
ASBR | AS Boundary Routers |
ASID | Acct-Session-Id |
ASM | Any-Source Multicast |
ASN | Autonomous System Number |
ASO | Application Service Option |
AT | ATtention |
ATM | Asynchronous Transfer Mode |
AVP | Attribute Value Pair |
Acronym | Definition |
B-bit | Beginning bit (first packet of a fragment) |
BBF | Broadband Forum |
BC | Bandwidth Constraint |
BCB | Backbone Core Bridge |
BCG | Burst Control Group |
BCP | Bridging Control Protocol |
B-DA | Backbone Destination MAC Address |
BEB | Backbone Edge Bridge |
BECN | Backward Explicit Congestion Notification |
Bellcore | Bell Communications Research |
BER | Basic Encoding Rules |
BER | Bit Error Rate |
BERT | Bit Error Rate Test |
BFD | Bi-directional Forwarding Detection |
BGP | Border Gateway Protocol |
BITS | Building Integrated Timing Source Building Integrated Timing Supply |
B-MAC | Backbone source and destination MAC address fields defined in the 802.1ah provider MAC encapsulation header |
BMCA | Best Master Clock Algorithm |
BMU | Broadcast, Multicast, and Unknown traffic |
BNG | Broadband Network Gateway |
BOF | Boot Option File |
BOOTP | Bootstrap Protocol |
BPDU | Bridge Protocol Data Unit |
BPG or BPGRP | Bundle Protection Group |
BR | Border Router |
BRAS | Broadband Remote Access Server |
BRG | Bridged Residential Gateway |
BSA | Broadband Service Aggregator |
BSAN | Broadband Service Access Node |
BSC | Base Station Controller |
BSD | Berkeley Software Distribution |
BSM | Basic Subscriber Management |
BSR | Bootstrap Router Broadband Service Router |
BTS | Base Transceiver Station |
BTSH | BGP TTL Security Hack |
BTV | Broadcast Television |
BUM | Broadcast, Unicast unknown and Multicast |
B-VPLS | Backbone VPLS |
BVID | Backbone VLAN ID |
BVPLS | See B-VPLS |
BVS | Business VPN Service |
BW | Bandwidth |
Acronym | Definition |
CA | Certificate Authority Connectivity Association |
CAC | Call Admission Control |
CAK | Connectivity Association Key |
CAM | Content Addressable Memory |
CAS | Channel Associated Signaling |
CBC | Cipher Block Chaining |
CBF | Class-Based Forwarding |
CBR | Constant Bit rate |
CBRS | Citizens Broadband Radio Systems |
CBS | Committed Buffer Size Committed Buffer Space Committed Burst Size |
CC | Content of Communication Continuity Check Control Channel |
CCA | Credit Control Answer Cross Connect Adapter |
CCA-I | Credit Control Answer-Initial |
CCA-T | Credit Control Answer-Terminate |
CCA-U | Credit Control Answer-Update |
CCAG | Cross Connect Aggregation Group |
CCFH | Credit Control Failure Handling |
CCID | Cross Connect Identifier |
CCM | Chassis Control Module Continuity Check Message |
CCR | Credit Control Request |
CCR-I | Credit Control Request-Initiate |
CCR-T | Credit Control Request-Terminate |
CCR-U | Credit Control Request-Update |
CCS | Common Channel Signaling |
CDMA | Code Division Multiple Access |
CDN | Call Disconnect Notify |
CDP | Cisco Discovery Protocol |
CDVT | Cell Delay Variation Tolerance |
CE | Circuit Emulation Customer Edge Customer Equipment |
CEA | Capability Exchange Answer |
CEC | Circuit Emulation Concentrator |
CEM | Circuit-Emulation |
CER | Capability Exchange Request |
CES | Circuit Emulation Services |
CESoPSN | Circuit Emulation Services over Packet Switched Network |
CF | Compact Flash |
CFHP | Class Fair Hierarchical Policing |
CFM | Connectivity Fault Management Control Forwarding Module |
CFP | C form-Factor Pluggable |
CGA | Cryptographically Generated Address |
CGI | Cell Global Identification |
CGN | Carrier Grade NAT |
CHAP | Challenge Handshake Authentication Protocol |
cHDLC | Cisco High-Level Data Link Control protocol |
CHLI | Consecutive High Loss Intervals |
CHV1 | Card Holder Verification |
CIDR | Classless Inter-Domain Routing |
CIR | Committed Information Rate |
CIST | Common and Internal Spanning Tree |
CKN | Connectivity association Key Name |
CLEI | Common Language Equipment Identification |
CLI | Command Line Interface |
CLLI | Common Language Location Identifier |
CLP | Cell Loss Priority |
CMA | Compact Media Adapter |
CMAC | Customer MAC |
CMP | Certificate Management Protocol |
CMTS | Cable Modem Termination System |
CO | Central Office |
CoA | Change of Authorization |
confed-EBGP | Confederation External BGP |
CoS | Class of Service |
CP | Connection-Profile |
CPE | Customer Premises Equipment |
Cpipe | Circuit Emulation Pipe |
CPM | Control Processing Module |
CP/SFM | Control Processor/Switch Fabric Module |
CPU | Control Processing Unit |
CRC | Cyclic Redundancy Check |
CRC-32 | 32-bit Cyclic Redundancy Check |
CRL | Certificate Revocation List |
CRMF | Certificate Request Message Format |
CRON | a time-based scheduling service (from chronos = time) |
CRP | Candidate RP |
CSC | Carrier Supporting Carrier |
CSC-CE | Carrier Supporting Carrier – Customer Edge Router |
CSC-PE | Carrier Supporting Carrier – Provider Edge Router |
CSF | Client Signal Fail |
CSM | Control and Switching Module |
CSN | Complete Sequence Number |
CSNP | Complete Sequence Number PDU |
CSP | Cloud Service Provider |
CSPF | Constraint-based Shortest Path First |
CSR | Cellsite Service Router |
CSU | Channel Service Unit |
CSV | Certificate Status Verification |
C-TAG | Customer VLAN tag |
CV | Connection Verification Customer VLAN (tag) |
CVID | Customer VLAN ID |
CW | Control Word |
Acronym | Definition |
DACS | Digital Access Cross-connect System |
DAD | Duplicate Address Detection |
DA/FAN | Distribution Automation/Field Area Network |
DC | Direct Current |
DCCA | Diameter Credit Control Application |
DCD | Data Carrier Detect |
DCE | Data Circuit-terminating Equipment Data Communications Equipment |
DCI | Client Defect Clear Indication Data Center Interconnect |
DCP | Distributed CPU Protection |
DCSC | Digital Channel Switch Capable |
DDM | Digital Diagnostics Monitoring |
DDMAP | Downstream Detailed Mapping |
DDoS | Distributed DoS |
DDP | Dynamic Data Persistency |
DDR | Dial On Demand Routing |
DDS | Dynamic Data Services |
DE | Discard-Eligible |
DEM | Dynamic Experience Management |
DES | Data Encryption Standard |
DEI | Drop Eligibility Indicator |
DER | Distinguished Encoding Rules |
DF | Delivery Function Do not Fragment |
DF | Designated Forwarder |
DH | Diffie-Hellman |
DHB | Decimal, Hexadecimal, or Binary |
DHCP | Dynamic Host Configuration Protocol |
DHCPv6 | Dynamic Host Configuration Protocol for IPv6 |
DHT | Distributed Hash Protocol |
DLC | Data Link Control |
DLCI | Data Link Connection Identifier |
DLCMI | Data Link Connection Management Interface |
DM | Delay Measurement |
DMM | Delay Measurement Message |
DMR | Delay Measurement Reply |
DN | Domain Name |
DNAT | Destination-based Network Address Translation |
DNS | Domain Name System |
DNSSEC | DNS Security |
DNU | Do Not Use |
DOD | Downstream On Demand |
DORA | Discovery/Offer/Request/Ack |
DoS | Denial of Service |
dot1p | IEEE 802.1p bits, in Ethernet or VLAN ingress packet headers, used to map traffic to up to eight forwarding classes |
dot1q | IEEE 802.1q encapsulation for Ethernet interfaces |
DPA | Disconnect Peer Answer |
DPD | Dead Peer Detection |
DPI | Digital Program Insertion |
DPL | Delegated Prefix Length |
DPLL | Digital Phase Locked Loop |
DPR | Disconnect Peer Request |
DPV | Designated Priority Vector |
DR | Designated Router |
DRA | Diameter Routing Agent |
DRM | Digital Rights Management |
DSA | Digital Signal Algorithm Direct System Agent |
DSAP | Destination Service Access Point |
DSC | Dynamic Services Controller |
DSCP | Differentiated Services Code Point |
DSFS | Data SAP Forwarding State |
DSL | Digital Subscriber Line |
DSLAM | Digital Subscriber Line Access Multiplexer |
DSM | Distributed Subscriber Management |
DSMAP | Downstream Mapping |
DSS | Digital Signature Standard |
DTC | DHCP Transaction Cache |
DTD | Dynamic Topology Discovery |
DTE | Data Terminal Equipment |
DTP | Digital Trunking Protocol |
DU | Downstream Unsolicited |
DUID | DHCP Unique Identifier |
DUS | Do not Use for Synchronization |
DVB | Digital Video Broadcasting |
DVMRP | Distance Vector Multicast Routing Protocol |
DWA | Device Watchdog Answer |
DWDM | Dense Wavelength Division Multiplexing |
DWR | Device Watchdog Request |
Acronym | Definition |
e2e | End-to-End |
EAP | Extensible Authentication Protocol |
EAPOL | EAP over LAN |
E-bit | Ending bit (last packet of a fragment) |
eBGP or EBGP | External Border Gateway Protocol |
EBS | Error Burst Size |
E-BSR | Elected BSR |
ECID | Emulated Circuit Identifiers |
ECGI | E-UTRAN Cell Global Identifier |
ECMP | Equal Cost Multipath |
ECT | Equal Cost Tree |
EEPROM | Electronically Erasable Programmable Read-Only Memory |
EFCI | Explicit Forward Congestion Indication |
EFEC | Enhanced Forward Error Correction |
EFH | Extended Failure Handling |
EFM | Ethernet in the First Mile |
EGP | Exterior Gateway Protocol |
EHS | Event Handling System |
EIC | Ethernet Interface Counters |
EIGRP | Enhanced Interior Gateway Routing Protocol |
EIR | Excess Information Rate |
E-LAN | Ethernet Local Area Network |
eLER | Egress Label Edge Router |
E-Line | Ethernet Virtual Private Line |
eLMI | Ethernet Local Management Interface |
EMR | Efficient Multicast Replication |
EMS | Enhanced Subscriber Management |
eNB | Evolved Node B |
EOOL | End of Options List |
EOM | End-of-Message |
EOR | End-of-RIB |
EPC | Evolved Packet Core |
EPD | Ethernet Port Damping |
Epipe | Ethernet Pipe Ethernet VLL |
EPL | Ethernet Private Line |
EPS | Equipment Protection Switching |
ERO | Explicit Router Object |
ERP | Ethernet Ring Protection |
ES | Elementary Stream |
ESF | Extended Super Frame |
ESI | Ethernet Segment Identifier |
ESM | Enhanced Subscriber Management |
ESMC | Ethernet Synchronization Messaging Channel |
ESN | Electronic Serial Number |
ESP | Encapsulating Security Payload |
ESR | Extended Services Router |
ETE | End-to-End |
ETH | Ethernet |
ETH-CFM | Ethernet Configuration and Fault Management Ethernet Connectivity Fault Management (IEEE 802.1ag) |
ETH-TST | Ethernet Test |
ETR | Extended Temperature Range |
ETSI | European Telecommunications Standards Institute |
ETYPE | EtherType |
EUI-64 | 64-bit Extended Unique Identifier |
EVC | Ethernet Virtual Connections |
EVI | EVPN Instance |
EVPL | Ethernet Virtual Private Link |
EVPN | Ethernet VPN |
EXEC | Execute |
EXP bits | Experimental bits (currently known as TC) |
Acronym | Definition |
FAP | Femto Access Point |
FASTE | FastE SFP type |
FC | Forwarding Class |
FCC | Fast Channel Change |
FCS | Frame Check Sequence |
FD | Frame Delay Frequency Diversity |
FDB | Forwarding Database |
FDDI | Fiber Distributed Data Interface |
FDI | Forward Defect Indication |
FDL | Facilities Data Link |
FDR | Frame Delay Range |
FEAC | Far-End Alarm and Control |
FEBE | Far-End Block Error |
FEC | Forwarding Equivalence Class Forward Error Correction |
FECN | Forward Explicit Congestion Notification |
FENT | Fast Ethernet Network Termination |
FEPL | Far-End Protection-Line |
FF | Fixed Filter |
FIB | Forwarding Information Base |
FID | Forwarding ID |
FIFO | First In, First Out |
FIN | Finish Bit Set |
FIPS | Federal Information Processing Standards |
FIR | Fair Information Rate |
FIX | Financial Information eXchange |
FLR | Frame Loss Ratio |
FOM | Figure of Merit |
FPE | Forwarding Path Extension |
FPGA | Field Programmable Gate Array |
Fpipe | Frame-Relay VLL |
F-PLMN | Forbidden PLMN |
FPP | Floor Packet Percentage |
FPRI | Fine-grained Priority |
FQDN | Fully Qualified Domain Name |
FQF | Fully Qualified Flows |
FR | Frame Relay |
FRG | Fragmentation bit |
FRR | Fast Reroute |
FSG | Fate Sharing Group |
FSM | Finite State Machine |
FTN | FEC-to-NHLFE |
FTP | File Transfer protocol |
FTTH | Fiber to the Home |
Acronym | Definition |
G-ACh | Generic Associated Channel |
GAL | Generic ACH Label |
GARP | Gratuitous ARP |
GBMAC | Group BMAC |
GBR | Guaranteed Bit Rate |
GFEC | G.709 FEC |
GFP | Generic Framing Procedure |
GGSN | Gateway GPRS Support Node |
GID | Global-ID |
GigE | Gigabit Ethernet |
GIGE | GigE SFP type |
GIGX | GigX SFP |
gLSP | GMPLS LSP |
GMPLS | Generalized Multi-Protocol Label Switching |
GMR | IGMP Group-specific Membership Report |
GMRE | GMPLS Routing Engine |
GNSS | Global Navigation Satellite System |
GOP | Group of Pictures |
GPON | Gigabit Passive Optical Network |
GPRS | General Packet Radio Service |
GPS | Global Positioning System |
GR | Graceful Restart Guaranteed Restoration |
GRACE | Graceful restart |
GRE | Generic Routing Encapsulation |
GRT | Global Routing Table |
GSMP | General Switch Management Protocol |
GSU | Granted Service Unit |
GTP | GPRS Tunneling Protocol |
GUA | Global Unicast Address |
GVRP | GARP VLAN Registration Protocol |
Acronym | Definition |
HA | High Availability |
HD | High Definition |
HDLC | High-level Data Link Control protocol |
HEC | Header Error Control |
HGW | Home Gateway |
HLI | High Loss Interval |
HLR | Home Location Register |
HMAC | Hash-based Message Authentication Code Hash Message Authentication Code |
HLE | Home LAN Extension |
H-OFS | Hybrid OpenFlow Switch |
H-POL | Hierarchical Policing |
H-QoS | Hierarchical Quality of Service |
HSDPA | High-Speed Downlink Packet Access |
HSDSL | High Speed Digital Subscriber Line |
HSI | High Speed Internet |
HSMDA | High Scale MDA |
HSPA | High-Speed Packet Access |
HSS | Home Subscriber Service |
HTTP | Hyper-Text Transfer Protocol |
HTTPS | HTTP Secure |
HVPLS | Hierarchical Virtual Private Line Service |
Acronym | Definition |
IAD | Integrated Access Device |
IAID | Identity Association Identification |
IANA | Internet Assigned Numbers Authority |
IA-NA | Identity Association for Non-Temporary Addresses |
IA-PD | Identity Association for Prefix Delegation |
IAPP | Inter Access Point Protocol |
IBGP | Interior Border Gateway Protocol |
IBN | Isolated Bonding Network |
IB-RCC | In-Band Ring Control Connection |
ICAP | Internet Content Adaptation Protocol |
ICB | Inter-Chassis Backup |
ICC | Inter-Card Communication |
ICCID | Integrated Circuit Card Identifier |
ICCN | Incoming Call Connected |
ICK | Integrity Connection Value Key |
ICL | Inter-Chassis Link |
ICMP | Internet Control Message Protocol |
ICMPv6 | Internet Control Message Protocol for IPv6 |
ICP | IMA Control Protocol |
ICRQ | Incoming Call Request |
ICV | Integrity Connection Value Integrity Check Value |
IDi | Identification Indicator (an IKEv2 protocol payload) |
IDr | Identification Responder |
IDS | Intrusion Detection System |
IDU | InDoor Unit |
IEEE | Institute of Electrical and Electronics Engineers |
I-ES | Interconnect Ethernet-Segment |
IES | Internet Enhanced Service |
IETF | Internet Engineering Task Force |
IFDV | InterFrame Delay Variation |
IFF | Inbound FEC Filtering |
IFG | Inter-Frame Gap |
IGD | Internet Gateway Device |
IGH | Interface Group Handler |
IGMP | Internet Group Management Protocol |
IGP | Interior Gateway Protocol |
IGRP | Interior Gateway Routing Protocol |
IID | Instance ID |
IIH | IS-IS Hello |
IIN | Issuer Identification Number |
IKE | Internet Key Exchange |
iLDP | Interface Label Distribution Protocol |
ILER | Ingress Label Edge Router |
ILM | Incoming Label Map |
ILMI | Integrated Local Management Interface |
IMA | Inverse Multiplexing over ATM |
IME | Interface Management Entity |
IMEI | International Mobile Equipment Identity |
IMEISV | International Mobile Equipment Identity and its Software Version |
IMET | Inclusive Multicast Ethernet Tag |
IMM | Integrated Media Module |
IMPM | Ingress Multicast Path Management |
IMSI | International Mobile Subscriber Identification |
IOM | Input/Output Module |
IOTA | Internet Over the Air (CDMA) |
IP | Internet Protocol |
IP-CAN | IP Connectivity Access Network |
IPCC | IP Communication Channel IP Control Channel |
IPCP | Internet Protocol Control Protocol |
IPFIX | IP Flow Information Export |
IPG | Inter-Packet Gap |
Ipipe | IP Pipe IP Interworking VLL |
IPL | IP Length |
I-PMSI | Inclusive Provider Multicast Service Interface |
IPOE | IP over Ethernet |
IPS | Intrusion Prevention System |
IPsec | IP Security |
IPTV | Internet Protocol Television |
IP-VPN | Internet Protocol Virtual Private Network |
IRB | Integrated Routing and Bridging |
IRI | Intercept Related Information |
ISA | Integrated Service Adapter |
ISA-AA | Integrated Service Adapter - Application Assurance |
ISAKMP | Internet Security Association and Key Management Protocol |
ISAM | Intelligent Services Access Manager |
ISID | I-component Service ID I-Service Instance Identifier |
IS-IS | Intermediate System to Intermediate System |
ISO | International Organization for Standardization |
ISP | Internet Service Provider |
ISSU | In-Service Software Upgrade |
IST | Internal Spanning Tree |
I-TAG | Service Instance TAG |
ITU-T | International Telecommunications Union - Telecommunications |
IWF | Interworking Function |
Acronym | Definition |
JID | JabberID |
JOLT | Java OnLine Transactions |
JP | Join Prune |
Acronym | Definition |
KAT | Keepalive Timer |
KPI | Key Performance Indicators |
Acronym | Definition |
L2TP | Layer 2 Tunneling Protocol |
LA | Location Area |
LAA | Local Address Assignment |
LAC | L2TP Access Concentrator |
LACP | Link Aggregation Control Protocol |
LAG | Link Aggregation Group |
LAI | Local Area Identity |
L-AIS | Line Alarm Indication Signal |
LAN | Local Area Network |
LAND | Local Area Network Denial |
LB | Label Base Loopback |
LBM | Loopback Message |
LBR | Loopback Reply Loopback Response |
LCD | Loss of Cell Delineation |
LCP | Link Control Protocol |
LDAP | Lightweight Directory Access Protocol |
LDAPS | LDAP over SSL/STL |
LDP | Label Distribution Protocol |
LDPoRSVP | LDP over RSVP |
LDRP | Lightweight DHCPv6 Relay Agent |
LER | Label Edge Router |
LFA | Loop-Free Alternate |
LFI | Link Fragmentation and Interleaving |
LIB | Label Information Base |
LIF | Loss of IMA Frame |
LIG | Lawful Intercept Gateway |
LLA | Link Local Address |
LLC | Link Layer Control Logical Link Control |
LLDP | Link Layer Discovery Protocol |
LLDPDU | Link Layer Discovery Protocol Data Unit |
LLF | Link Loss Forwarding |
LLGR | Long Lived Graceful Restart |
LLID | Loopback Location ID |
LM | Loss Measurement |
LMM | Loss Measurement Message |
LMI | Local Management Interface |
LMR | Loss Measurement Response |
LMP | Link Management Protocol |
LNS | L2TP Network Server |
LOC | Loss of Continuity |
LODS | Link Out of Delay Synchronization |
LOF | Loss of Frame |
LOP | Loss of Packets |
LOS | Loss of Signal |
LoT | Loss of Transmission |
LPM | Longest Prefix Match |
LPN | Label per Next hop |
LPP | Label per Prefix |
LPT | Logical Port Type |
LPT-S | Logical Port Type Subtype |
LPT-V | Logical Port Type Value |
LQR | Link Quality Report |
LR | Label Route |
LSA | Link-State Advertisement |
LSB | Least Significant Bit |
LSDB | Link-Sate Database |
LSN | Large-Scale NAT |
LSP | Link-State PDU (for IS-IS) Label-Switched Path |
LSR | Link-state Request Label Switch Router |
LSU | Link-State Update |
LT | Linktrace |
LTE | Line Termination Equipment Long Term Evolution |
LTM | Linktrace Message |
LTN | LSP ID to NHLFE |
LTR | Linktrace Reply Linktrace Response |
LTS | L2TP Tunnel Switching |
LUB | Limit Unused Bandwidth |
LUDB | Local User Data Base |
Acronym | Definition |
MA | Maintenance Association |
MA-ID | Maintenance Association Identifier |
MAC | Media Access Control |
MACsec | Media Access Control Security |
MAF | Management Access Filter |
MAM | Maximum Allocation Model |
MAN | Metropolitan Area Network |
MAR | Mobile Aggregation Router |
MAT | MAC Address translation |
MBB | Make-Before-Break |
MBGP | Border Gateway Protocol with Multi-protocol extensions |
MBH | Mobile BackHaul |
MBR | Maximum Bit Rate |
MBS | Maximum Buffer Size Maximum Burst Size Media Buffer Space |
MBZ | Must Be Zero |
MCAST | Multicast |
MC-APS | Multi-Chassis Automatic Protection Switching |
MC-CTL | Multi-Chassis Control Link |
MC-EP | Multi-Chassis Endpoint |
MC-IPSec | Multi-Chassis IPSec redundancy |
MC-LAG | Multi-Chassis Link Aggregation |
MC-MLPPP | Multi-Chassis Multilink Point-to-Point Protocol Multi-Class Multilink Point-to-Point Protocol |
MCAB | Maximum Configurable ATM Bandwidth |
MCAC | Multicast Connection Admission Control |
MCC | Mobile Country Code |
MCLT | Maximum Client Lead Time |
MCM | MDA Carrier Module |
MCR | Mobile Core Router |
MC-RING | Multi-Chassis Ring |
MCS | Multi-Chassis Synchronization |
MD | Maintenance Domain |
MD5 | Message Digest version 5 (algorithm) |
MDA | Media Dependent Adapter |
MDI | Media Dependent Interface |
MDL | Maintenance Data Link |
MDN | Mobile Directory Number |
MDT | Multicast Distribution Tree |
MDU | Multiple Dwelling Unit |
MDX | Media Dependent Interface with crossovers |
ME | Maintenance Entity |
MED | Multi-Exit Discriminator |
MEF | Metro Ethernet Forum |
MEG | Maintenance Entity Group |
MEP | Maintenance Association Endpoint Maintenance Endpoint |
MEP-ID | Maintenance Association Endpoint Identifier |
MFD | Mean Frame Delay |
MFIB | Multicast Forwarding Information Base |
MHD | Multi-Homed Device |
MHF | MIP Half Function |
MHN | Multi-Homed Network |
MHV | Mirror Header Version |
MI | Member Identifier |
MIB | Management Information Base |
MIMO | Multiple Input/Multiple Output |
MIMP | MC-IPSec Mastership Protocol |
MIP | Maintenance Domain Intermediate Point Maintenance Intermediate Points |
MIR | Minimum Information Rate |
MKA | MACSec Key Agreement |
MLD | Multicast Listener Discovery |
MLDP | Multicast Label Distribution Protocol |
MLFR | Multi-Link Frame Relay |
MLPPP | Multilink Point-to-Point Protocol |
MME | Mobility Management Entity |
MLT | Multi-Link Trunk |
MMRP | Multiple MAC Registration Protocol |
MNC | Mobile Network Code |
MNO | Mobile Network Operator |
MOP | Maintenance Operational Procedure |
MOS | Mean Opinion Score |
MP | Merge Point Multilink Protocol |
MPBGP | Multi-Protocol Border Gateway Protocol |
MPLS | Multiprotocol Label Switching |
MPLS-TP | Multiprotocol Label Switching - Transport Profile |
MPLSCP | Multiprotocol Label Switching Control Protocol |
MPTS | Multi-Program Transport Stream |
MRAI | Minimum Route Advertisement Interval |
MRIB | Multicast Routing Information Base |
MRP | Multi-service Route Processor |
MRRU | Maximum Received Reconstructed Unit |
MRU | Maximum Receive Unit |
MSAN | Multi-Service Access Node |
MSAP | Managed Service Access Point |
MSB | Most Significant Bit |
MSCC | Multiple Services Credit Control |
MSDP | Multicast Source Discovery Protocol |
MSDU | MAC Service Data Unit |
MSFP | Multicast Switch Fabric Plane |
MSID | Mobile Station Identifier |
MSIN | Mobile Subscriber Identification Number |
MS-ISM | Multi-Service Integrated Services Module |
MSK | Master Session Key |
MS-PW | Multi-Segment Pseudowire |
MSR | Mobile Service Router |
MSS | Multi-Service Site Maximum Segment Size |
MSTI | Multiple Spanning Tree Instances |
MSTP | Multiple Spanning Tree Protocol |
MSTV | Microsoft Television |
MTBF | Mean Time Between Failures |
MTSO | Mobile Telephony Switching Office |
MTTR | Mean Time To Repair |
MTU | Multi-Tenant Unit Maximum Transmission Unit |
M-VPLS | Management Virtual Private Line Service |
MVPN | Multicast VPN |
MVR | Multicast VPLS Registration |
MVRP | Multiple VLAN Registration Protocol |
Acronym | Definition |
NAPT | Network Address and Port Translation |
NAS | Network Access Server |
NAT | Network Address Translation |
NBMA | Non-Broadcast Multiple Access network |
NBNS | NetBios Name Server |
NDF | Non-Designated Forwarder |
NET | Network Entity Title |
NETCONF | Network Configuration Protocol |
NG-MVPN | Next-Generation Multicast VPN |
NGE | Network Group Encryption |
NH | Next-Hop |
NHLFE | Next-Hop Label Forwarding Entry |
NHOP | Next-Hop |
NID | Network Interface Demarcation |
NIST | National Institute of Standards and Technology |
NLPID | Network Level Protocol Identifier |
NLRI | Network Layer Reachability Information |
NMS | Network Management System |
NNI | Network-to-Network Interface |
NPA | Network Processor Array |
NPAT | Network and Port Address Translation |
NRT-VBR | Non-Real-Time Variable Bit Rate |
NSAP | Network Service Access Point |
NSH | Next Signaling Hop |
NSP | Network Services Platform |
NSR | Nonstop Routing |
NSSA | Not-So-Stubby Area |
NTP | Network Time Protocol |
NVE | Network Virtualization Edge |
Acronym | Definition |
OAM | Operation, Administration and Management |
OAMPDU | OAM Protocol Data Units |
OC3 | Optical Carrier level 3 |
OCD | Out-of-Cell Delineation |
OCS | Online Charging Server |
OCSP | Online Certificate Status Protocol |
ODSA | On-Demand Subnet Allocation |
OF | OpenFlow |
OFS | OpenFlow Switch |
OID | Object Identifier |
OIF | Outgoing Interfaces |
OIL | Outgoing Interface List |
OLT | Optical Line Termination |
OMCR | Oversubscribed Multi-Chassis Redundancy |
ONT | Optical Network Terminal |
OOB | Out-of-Band |
OOP | Out-of-Profile |
OPDL | Option Data structure List |
OPS | On-Path Support |
ORF | Outbound Route Filtering |
ORR | Optimal Route Reflection |
OS | Operating System |
OSF | Oversubscription Factor |
OSI | Open Systems Interconnection (reference model) |
OSINLCP | OSI Network Layer Control Protocol |
OSPF | Open Shortest Path First |
OSPF-TE | OSPF-Traffic Engineering (extensions) |
OSS | Operations Support System |
OTASP | Over the Air Services Provisioning (CDMA) |
OTN | Optical Transport Network |
OTU | Optical Transport Unit |
OWAMP | One-Way Active Measurement Protocol |
OXC | Optical Cross-connect |
Acronym | Definition |
P2MP | Point-to-Multipoint |
PAA | PDN Address Allocation |
PADI | PPPoE Active Discovery Initiation |
PADO | PPPoE Active Discovery Offer |
PADR | PPPoE Active Discovery Request |
PADS | PPPoE Active Discovery Session-confirmation |
PADT | PPPoE Active Discovery Terminate |
PAE | Port Authentication Entities |
PAGP | Port Aggregation Protocol |
PAP | Password Authentication Protocol |
PASTE | Provider Architecture for Differentiated Services and Traffic Engineering |
PBB | Provider Backbone Bridging |
PBF | Policy-Based Forwarding |
PBO | Packet-Byte-Offset |
PBR | Policy-Based Routing |
PBT | Port-Based Timestamping |
PCC | Path Computation Element Client |
PCC | Policy and Charging Control |
PCE | Path Computation Element |
PCEF | Policy and Charging Enforcement Function |
PCEP | Path Computation Element Protocol |
PCM | Pulse Code Modulation |
PCO | Protocol Configuration Options |
PCP | Priority Code Point |
PCR | Peak Cell Rate Proprietary Clock Recovery |
PCRF | Policy and Rule Charging Function |
PDN | Packet Data Network |
PDP | Packet Data Protocol |
PDU | Protocol Data Units |
PDV | Packet Delay Variation |
PE | Provider Edge Router |
PFC | Protocol Field Compression |
PFS | Perfect Forward Secrecy |
PFSG | Pool Fate Sharing Group |
PHB | Per-Hop Behavior |
PHP | Penultimate Hop Popping |
PHY | Physical layer |
PIC | Prefix Independent Convergence |
PID | Packet Identifier Protocol Identifier |
PIM | Protocol Independent Multicast |
PIM-DM | Protocol Independent Multicast-Dense Mode |
PIM-SM | Protocol Independent Multicast – Sparse Mode |
PIN | Personal Identification Number |
PIP | Picture-in-Picture |
PIR | Peak Information Rate |
PKI | Public Key Infrastructure |
PLMN | Public Land Mobile Network |
PLR | Point of Local Repair |
PMSI | P-Multicast Service Interface |
PMSTP | Provider Multi-Instance Spanning Tree Protocol |
PMT | Program Map Table |
PN | Packet Number |
POA | Program Off Air |
POI | Purge Originator Identification |
PON | Passive Optical Network |
POP | Points of Presence |
POS | Packet over SONET |
PPID | Payload Protocol Identifier |
PPP | Point-to-Point Protocol |
PPPOE | Point-to-Point Protocol over Ethernet |
PPS | Packets per Second |
PPTP | Point-to-Point Tunneling Protocol |
PRC | Path Restoration Combined Primary Reference Clock |
PRF | Pseudorandom Function |
PRI | Packet Priority |
PSB | Path State Block |
PSC | Protection Switching Coordination |
PSCP | Programmable Subscriber Configuration Policy |
PSD | Protection Switching Duration |
PSI | Payload Structure Identifier |
PSK | Pre-Shared Key |
PSM | Peer State Machine |
PSN | Packet-Switched Network |
PSNP | Partial Sequence Number PDU |
PTA | PMSI Tunnel Attribute PPP Termination Aggregation |
PTB | Packet Too Big |
P-TMSI | packet TMSI |
PTP | Performance Transparency Protocol Precision Time Protocol |
PUK | Personal Unblocking Code |
PVC | Permanent Virtual Circuit |
PVCC | Permanent Virtual Channel Connection |
PVST | Per VLAN STP |
PW | Pseudowire |
PWE | Pseudowire Emulation |
PWE3 | Pseudowire Emulation Edge-to-Edge |
PXC | Port Cross-Connect |
Acronym | Definition |
Q.922 | ITU-T Q-series Specification 922 |
QCI | QoS Class Identifier |
QL | Quality Level |
QoS | Quality of Service |
QPPB | QoS Policy Propagation via BGP |
QSFP | Quad Small Form-factor Pluggable |
Acronym | Definition |
RAA | Re-Authentication Answer |
RADIUS | Remote Authentication Dial In User Service |
RAI | Routing Area Identity |
RAM | Reporting and Analysis Manager |
RAN | Radio Access Network |
R-APS | Ring Automatic Protection Switching |
RAR | Re-Authentication Request |
RC | Result Code |
RCO | Routed Central Office |
RD | Route Distinguisher |
RDI | Remote Defect Indication |
RDM | Russian Doll Model |
RDNSS | Recursive DNS Server |
RED | Random Early Discard |
RESV | Reservation |
RET | Retransmission |
RFD | Route Flap Damping |
RG | Routed Gateway |
RGW | Residential Gateway |
RIB | Routing Information Base |
RIP | Routing Information Protocol |
RNC | Radio Network Controller |
RNCV | Ring Node Connectivity Verification |
ROA | Route Origin Authorization |
RP | Rendezvous Point |
RPC | Remote Procedure Call |
RPA | RP Address |
RPF | Reverse Path Forwarding |
RPL | Ring Protection Link |
RPS | Radio Protection Switching |
RR | Reporting Reason Route Reflector |
RRC | Radio Resource Control Protocol |
RRO | Record Route Object |
RSA | Rivest, Shamir, and Adleman (authors of the RSA encryption algorithm) |
RSB | Reservation State Block |
RSC | Return Sub-Code |
RSCP | Received Signal Code Power |
RSHG | Residential Split Horizon Group |
RSSI | Received Signal Strength Indicator |
RSTP | Rapid Spanning Tree Protocol |
RSU | Requested Service Unit |
RSVP | Resource Reservation Protocol |
RSVP-TE | Resource Reservation Protocol – Traffic Engineering |
RT | Receive/Transmit |
RT-VBR | Real-Time Variable Bit Rate |
RTCP | RTP Control Protocol |
RTM | Routing Table Manager |
RTMP | Real-Time Messaging Protocol |
RTMPE | Encrypted Real Time Messaging Protocol |
RTMPT | Tunneled Real Time Messaging Protocol |
RTP | Real-Time Transport Protocol |
RTSP | Real-Time Streaming Protocol |
RVPLS | Routed Virtual Private LAN Service |
Acronym | Definition |
S2L | Source-to-leaf |
S-A | Source-Active |
SA | Security Association |
SAA | Service Assurance Agent |
SAC | State Advertisement Control |
SAFI | Subsequent Address Family Identifier |
SAI | Service Area Identity Secure Association Identifier |
SAII | Source Access Individual Identifier Source Attachment Individual Identifier |
SAK | Security Association Key |
SAP | Service Access Point Subscriber Access Point |
SASE | Stand Alone Synchronization Equipment |
SAToP | Structure-Agnostic TDM over Packet |
SBAU | Shared Buffer Average Utilization |
SBR | Source-Based Reroute |
SBU | Shared Buffer Utilization |
SC | Security Channel |
SCI | Secure Channel Identifier |
SCP | Secure Copy |
SCR | Sustained Cell Rate |
SCTE | Society of Cable Telecommunications Engineers |
SCUR | Session Charging with Unit Reservation |
SD | Signal Degrade Space Diversity |
SDH | Synchronous Digital Hierarchy |
SDN | Software Defined Network |
SDP | Service Destination Point Service Distribution Point |
SE | Shared Explicit |
SecTAG | Security TAG |
SecY | MAC Security Entity |
SeGW | Secure Gateway |
SeND | Secure Neighbor Discovery |
SETS | Synchronous Timing Equipment Subsystem |
SF | Signal Fail |
SFF | Small Form Factor |
SFM | Switch Fabric Module |
SFP | Small Form-factor Pluggable (transceiver) |
SGSN | Serving GPRS Support Node |
SHA | Secure Hash Algorithm |
SHCV | Subscriber Host Connectivity Verification |
SHG | Split Horizon Group |
SI | Strategic Industries |
SID | Segment ID |
SIM | Subscriber Identification Module |
SIP | Session Initiation Protocol |
SIR | Sustained Information Rate |
SL | Synthetic Loss Short Length |
SLA | Service Level Agreement |
SLAAC | Stateless Address Auto-Configuration |
SLARP | Serial Line Address Resolution Protocol |
SLIP | Serial Line Internet Protocol |
SLM | Synthetic Loss Message |
SLR | Synthetic Loss Reply |
SMGR | Service Manager |
SNAPT | Source Network Address and Port Translation |
SNCP | Sub-Network Connection Protection |
SNI | Server Name Indicator |
SNMP | Simple Network Management Protocol |
SNPA | Subnetwork Point of Attachment |
SNR | Signal to Noise Ratio |
SNTP | Simple Network Time Protocol |
SOAM | Service OAM |
SONET | Synchronous Optical Network |
SOO | Site of Origin |
SPB | Shortest Path Bridging |
SPBM | Shortest Path Bridging MAC Mode |
SPF | Shortest Path First |
SPI | Security Parameter Index |
S-PMSI | Selective Provider Multicast Service Interface |
SPT | Shortest Path Tree |
SR | Segment Routing Service Router (7750 SR) |
SRGB | Segment Routing Global Block |
SRLG | Shared Risk Link Group |
SRRP | Subscriber Routed Redundancy Protocol |
SR-MS | Segment Routing Mapping Server |
SR-TE | Segment Routing Traffic Engineering |
SSD | Solid State Drive |
SSH | Secure Shell |
SSL | Secure Socket Layer |
SSM | Source-Specific Multicast Synchronization Status Messages Synchronization Status Messaging |
SSRC | Synchronization Source |
SSU | System Synchronization Unit Synchronization Supply Unit |
STA | Session-Termination-Answer |
S-TAG | Service VLAN tag |
STB | Set Top Box |
STM1 | Synchronous Transport Module, level 1 |
STP | Spanning Tree Protocol |
STR | Session-Termination-Requests |
SVC | Switched Virtual Circuit |
SVID | Stacked VLAN ID |
SYN | Synchronize |
Acronym | Definition |
TAC | Technical Assistance Center |
TACACS+ | Terminal Access Controller Access-Control System Plus |
TAF | Time Average Factor |
TAII | Target Attachment Individual Identifier |
TC | Traffic Class (formerly known as EXP bits) |
TCA | Threshold Crossing Alert Traffic Crossing Alert |
TCI | TAG Control Information |
TCN | Topology Change Notification |
TCP | Transmission Control Protocol |
TCSB | Traffic Control State Block |
TDF | Traffic Detection Function |
TDM | Time Division Multiplexing |
TDP-ID | Time Descriptor Policy Identifier |
TE | Traffic Engineering |
TED | Traffic Engineering Database |
TEID | Tunnel Endpoint Identifier |
TFN | Tribe Flood Network |
TFTP | Trivial File Transfer Protocol |
TLDP | Targeted LDP |
TLS | Transport Layer Security |
TLV | Type Length Value |
TM | Traffic Management |
TMSI | Temporary Mobile Subscriber Identity |
TNC | Technically Non-Conformant |
TNS | Transparent Network Substrate |
ToD | Time of Day |
TOS | Type-of-Service |
T-PE | Terminating Provider Edge router |
TPID | Tag Protocol Identifier |
TPMR | Two-Port MAC Relay |
TPSDA | Triple Play Service Delivery Architecture |
TS | Transport Stream |
TSH | TTL Security Hack |
TTI | Trail Trace Identifier |
TTL | Time to Live |
TTLS | Tunneled Transport Layer Security |
TTM | Tunnel Table Manager |
TWAMP | Two-Way Active Measurement Protocol |
Acronym | Definition |
U-APS | Unidirectional Automatic Protection Switching |
UBR | Unspecified Bit Rate |
UDP | User Datagram Protocol |
UE | User Equipment |
UICC | Universal Integrated Circuit Card — SIM card |
ULD | Uni-directional Link Detection |
UMTS | Universal Mobile Telecommunications System (3G) |
UNI | User-to-Network Interface |
UPnP | Universal Plug and Play |
uRPF | Unicast Reverse Path Forwarding |
USIM | Universal Subscriber Identity Module — application |
USM | User-based Security Model |
USU | Used Service Unit |
UTC | Coordinated Universal Time |
Acronym | Definition |
VACM | View-based Access Control Model |
VAS | Value Added Service |
VBO | VE Block Offset |
VBS | VE Block Size |
VC | Virtual Circuit |
VCC | Virtual Channel Connection |
VCCV | Virtual Circuit Connectivity Verification |
VCI | Virtual Circuit Identifier |
VCP | Virtual Core Port |
VE | VPLS Edge |
VE-ID | VPWS Edge Identifier |
V-GW | Visited WLAN-GW |
VID | VLAN ID |
VLAN | Virtual LAN |
VLL | Virtual Leased Line |
vMEPs | Virtual MEPS |
VNI | VXLAN Network Identifier |
VoD | Video on Demand |
VoIP | Voice over IP |
VP | Virtual Path |
VPC | Virtual Path Connection |
VPI | Virtual Path Identifier |
VPLS | Virtual Private LAN Service |
VPN | Virtual Private Network |
VPRN | Virtual Private Routed Network |
VPWS | Virtual Private Wire Service |
VQM | Video Quality Monitoring |
VRF | Virtual Routing and Forwarding table |
vRGW | Virtual Residential Gateway |
VRID | Virtual Router ID |
VRP | Validated ROA Payload |
VRRP | Virtual Router Redundancy Protocol |
VSA | Vendor Specific Attribute |
VSC | Virtual Services Controller |
VSD | Virtual Services Directory |
VSI-ID | Virtual Switch Instance identifier |
VSM | Vendor-Specific Message Versatile Service Module |
VSO | Vendor-Specific Option |
VSP | Virtual Services Platform |
VT | Validity Time Virtual Trunk |
VTEP | VxLAN Tunnel Endpoint |
VTP | Virtual Trunk Protocol |
VxLAN | Virtual eXtensible Local Area Network |
Acronym | Definition |
WAC | WiiMAX Access Controller |
WAN | Wide Area Network |
WAP | Wireless Application Protocol |
WLAN | Wireless Local Area Network |
WLAN-GW | WLAN Gateway |
WPP | Web Authentication Protocol Wireless Portal Protocol |
WRED | Weighted Random Early Detection Weighted Random Early Discard |
WRR | Weighted-Round-Robin |
Acronym | Definition |
XML | Extensible Markup Language |
X.21 | ITU-T X-series Recommendation 21 |
XMPP | eXtensible Messaging and Presence Protocol |