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BGP-LS Extensions for Scalable Segment Routing based Enhanced VPN

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Jie Dong , Zhibo Hu, Zhenbin Li , Xiongyan Tang, Ran Pang
Last updated 2024-04-25 (Latest revision 2023-10-23)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Enhanced VPN (VPN+) aims to provide enhanced VPN services to support some applications' needs of enhanced isolation and stringent performance requirements. VPN+ requires integration between the overlay VPN connectivity and the resources and characteristics provided by the underlay network. A Virtual Transport Network (VTN) is a virtual underlay network which can be used to support one or a group of VPN+ services. In the context of network slicing, a VTN could be instantiated as a network resource partition (NRP). This document specifies the BGP-LS mechanisms with necessary extensions to advertise the information of scalable Segment Routing (SR) based NRPs to a centralized network controller. Each NRP can have a customized topology and a set of network resources allocated from the physical network. Multiple NRPs may shared the same topology, and multiple NRPs may share the same set of network resources on specific network segments. This allows flexible combination of network topology and network resource attributes to build a large number of NRPs with a relatively small number of logical topologies. The proposed mechanism is applicable to both segment routing with MPLS data plane (SR-MPLS) and segment routing with IPv6 data plane (SRv6).


Jie Dong
Zhibo Hu
Zhenbin Li
Xiongyan Tang
Ran Pang

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)