3. Terminology

3. Terminology

Most of the terminology used in this documents comes from [RFC7432] and [RFC7365].

VXLAN: Virtual Extensible LAN

GRE: Generic Routing Encapsulation

NVGRE: Network Virtualization using Generic Routing Encapsulation

GENEVE: Generic Network Virtualization Encapsulation

PoD: Point of Delivery

NV: Network Virtualization

NVO: Network Virtualization Overlay

NVE: Network Virtualization Edge

VNI: VXLAN Network Identifier

VSID: Virtual Subnet Identifier (for NVGRE)

I-SID: Service Instance Identifier

EVPN: Ethernet VPN

EVI: EVPN Instance. An EVPN instance spanning the Provider Edge (PE) devices participating in that EVPN

MAC-VRF: A Virtual Routing and Forwarding table for Media Access Control (MAC) addresses on a PE

IP-VRF: A Virtual Routing and Forwarding table for Internet Protocol (IP) addresses on a PE

ES: Ethernet Segment. When a customer site (device or network) is connected to one or more PEs via a set of Ethernet links, then that set of links is referred to as an 'Ethernet segment'.

Ethernet Segment Identifier (ESI): A unique non-zero identifier that identifies an Ethernet segment is called an 'Ethernet Segment Identifier'.

Ethernet Tag: An Ethernet tag identifies a particular broadcast domain, e.g., a VLAN. An EVPN instance consists of one or more broadcast domains.

PE: Provider Edge

Single-Active Redundancy Mode: When only a single PE, among all the PEs attached to an ES, is allowed to forward traffic to/from that ES for a given VLAN, then the Ethernet segment is defined to be operating in Single-Active redundancy mode.

All-Active Redundancy Mode: When all PEs attached to an Ethernet segment are allowed to forward known unicast traffic to/from that ES for a given VLAN, then the ES is defined to be operating in All-Active redundancy mode.

PIM-SM: Protocol Independent Multicast - Sparse-Mode

PIM-SSM: Protocol Independent Multicast - Source-Specific Multicast

BIDIR-PIM: Bidirectional PIM