CPE : Customer-Premises Equipment or Customer-Provied equipment
https://en.wikipedia.org/wiki/Customer-premises_equipment
A CPE can be an active equipment, as the ones mentioned above or a passive equipment such as analogue-telephone-adapters or xDSL-splitters.
Included are key telephone systems and most private branch exchanges. Excluded from CPE are overvoltage protection equipment and pay telephones. Other types of materials that are necessary for the delivery of the telecommunication service, but are not defined as equipment, such as manuals and cable packages, and cable adapters are instead referred to as CPE-peripherals.
CPE can refer to devices purchased by the subscriber, or to those provided by the operator or service provider.
ETSI : European Telecommunications Standards Institute
https://en.wikipedia.org/wiki/ETSI
The European Telecommunications Standards Institute (ETSI) is a non-profit organization that establishes telecommunications standards for Europe. ETSI guidelines are voluntary and almost always comply with standards produced by international bodies.
VNFaaS : VNF as a Service
VNF : Virtual Network Function
NFV : Network Function Virtualization
NFV versus VNF : To summarize, NFV is an overarching concept, while a VNF is building block within
ETSI’s current NFV framework.
What is a network fuction? The term typically refers to some component of a network infrastructure that provided a “well-defined" functional behavior,” such as intrusion detection, intrusion prvention or routing. Historically, we have depolyed such network functions as physical appliances, where software is tightly coupled with specific, proprietary hardware. These physical network functions need to be manually installed into the network, creating operational challenges and preventing rapid deployment of new network functions. A VNF, on the other hand, refers to the implementation of network fuction using software that is decoupled from the underlying hardware. This can lead to more agile networks with significant Opex and Capex savigs.
In contrast. NFV typically refers to the overarching principle of concept of running software-defined network functions, independant of any specific hardware platform, as well as to a formal network virtualization initiativie led by some of the world’s biggest telecommunication network operators. In conjunction with ETSI, these companies aim to create and standardize an overarching, comprehensive NFV framework, a high-level illustration of which appers below. Notice that the diagram hi-lights VNFs that are deployed on top of NFV Infrastructure, which may span more that one physical location.
VRRP : Virtual Router Redundancy Protocol
https://en.wikipedia.org/wiki/Virtual_Router_Redundancy_Protocol
The Virtual Router Redundancy Protocol (VRRP) is a computer networking protocol that provides for
automatic assignment of availiable Internet Protocol (IP) routers to participating hosts. This increases
the availability and reliability of routing paths via automatic default gateway selections on an IP
subnetwork.
HSRP : Hot Standby Router Protocol
https://en.wikipedia.org/wiki/Hot_Standby_Router_Protocol
In computer networking, the Hot Standby Router Protocol (HSRP) is a Cisco propiertary redundancy
protocol for estabilishing a fault-tolerant default gateway, and has been described in detail in RFC 2281.
DPDK : Data Plane Development Kit
DPDK is a set of libraries and drivers for fast packet processing. It was designed to run on any proce-
ssors. The first supported CPU was Intel x86 and it is now extended to IBM Power 8, EZchip TILE-Gx
and TILE-Gx and ARM. It runs mostly in Linux userland. A FreeBSD port is available for a subset of
DPDK features. ( Library for userspace packet processing , Directly manage NIC with userspace poll mode drvier(PMD).
DPDK drivers for both physical and virtual NICs and Polls drvier NIC for packets, NIC DMAs directly to
application buffers. )