%% You should probably cite draft-yang-alto-multi-domain-03 instead of this revision. @techreport{yang-alto-multi-domain-01, number = {draft-yang-alto-multi-domain-01}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-yang-alto-multi-domain/01/}, author = {Y. Richard Yang and Mario Lassnig}, title = {{ALTO Multi-Domain Services}}, pagetotal = 9, year = 2023, month = mar, day = 13, abstract = {Application-Layer Traffic Optimization (ALTO) provides means for network applications to obtain network information. In the definitions of ALTO services ({[}RFC7285{]} and existing extensions), there is no requirement on whether the source and the destination endpoints must belong to the same autonomous network, which is a single-domain setting, or they can belong to different autonomous networks, which is a multi-domain setting. This document explains problems of realizing ALTO in multi-domain settings and then presents 3 potential solutions to realize ALTO multi-domain services.}, }