@techreport{ietf-idr-bgpls-inter-as-topology-ext-17, number = {draft-ietf-idr-bgpls-inter-as-topology-ext-17}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-idr-bgpls-inter-as-topology-ext/17/}, author = {Aijun Wang and Huaimo Chen and Ketan Talaulikar and Shunwan Zhuang and Changwang Lin}, title = {{BGP-LS Extension for Inter-AS Topology Retrieval}}, pagetotal = 12, year = 2025, month = feb, day = 11, abstract = {This document describes the process to distribute Border Gateway Protocol- Link State (BGP-LS) key parameters for inter-domain links between two Autonomous Systems. This document defines a new type within the BGP-LS NLRI for a Stub Link and three new type-length- values (TLVs) for BGP-LS Link descriptor. These additions to BGP-LS let Software Definition Network (SDN) controllers retrieve the network topology automatically under various inter-AS environments. Such extension and process can enable the network operator to collect the interconnect information between different domains and then calculate the overall network topology automatically based on the information provided by BGP-LS protocol.}, }