Hello All, You will recall that at the NSI working group meeting collocated with GLIF in Prague, we decided that the tree model of communication should support both hop-by-hop routing as well as source based routing. To reflect this we now have a new draft version of the NSI signalling and pathfinding document. This is available to download here: https://redmine.ogf.org/dmsf_files/13504 Please note that if this document is approved by the working group it will make GFD-I-217 obsolete. Could you please review the document and send your comments the NSI mailing list. Regards, Guy Guy Roberts PhD Senior Transport Network Architect Tel: +44 (0)1223 371316 Mob: +44 (0)7881 336417 Skype: guy1965 GÉANT Networks • Services • People Learn more at www.geant.org​<http://www.geant.org/> ​GEANT Limited, trading as GÉANT. Registered in England & Wales. Registration Number 2806796. Registered Office – City House, 126-130 Hills Road, Cambridge CB2 1PQ