Acronyms

Acronym

Expansion

2FA

Two-Factor Authentication

ASN

Autonomous System Number

BFD

Bidirectional Forwarding Detection

BGP

Border Gateway Protocol

CPE

Customer Premise Equipment

C-tag

Customer VLAN tag (inner 802.1Q tag)

DDoS

Distributed Denial of Service

DMVPN

Dynamic Multipoint VPN

DPA

Data Processing Agreement

DRG

Dynamic Routing Gateway (Oracle Cloud Infrastructure)

EoMPLS

Ethernet over MPLS

ER

ExpressRoute (Microsoft Azure)

ESP

Encapsulating Security Payload (IPsec)

EVPL

Ethernet Virtual Private Line

GRE

Generic Routing Encapsulation

GVPN

Global VPN (Tata Communications MPLS VPN)

HA

High Availability

IaC

Infrastructure as Code

IKE

Internet Key Exchange

IPsec

Internet Protocol Security

L2VPN / L3VPN

Layer 2 / Layer 3 Virtual Private Network

LAG

Link Aggregation Group

MACsec

Media Access Control Security

MPLS

Multiprotocol Label Switching

MSEE

Microsoft Enterprise Edge (Azure ExpressRoute edge router)

MTU

Maximum Transmission Unit

NAT-T

NAT Traversal (IPsec)

NGE

Next Generation Encryption

NHRP

Next Hop Resolution Protocol

NNI

Network-to-Network Interface

OCI

Oracle Cloud Infrastructure

OTP

One-Time Passcode

PE

Provider Edge (router)

PoP

Point of Presence

QoS

Quality of Service

RPO

Recovery Point Objective

RTO

Recovery Time Objective

SD-WAN

Software-Defined Wide Area Network

SLA

Service Level Agreement

SSO

Single Sign-On

S-tag

Service VLAN tag (outer Q-in-Q tag)

TCx

Tata Communications customer portal

VC

Virtual Circuit

VIF

Virtual Interface (AWS Direct Connect)

VLAN

Virtual Local Area Network

VNet

Virtual Network (Microsoft Azure)

VNF

Virtualised Network Function

VRF

Virtual Routing and Forwarding