Henrik, Looking up my documentation on orientation I see that I came up with this definition: Orientation · Orientation attribute is used to assign a direction to a bidirectional STP to remove ambiguity when performing path computation. Orientation type is ingress or egress. Ingress/Egress is relative to the Network. See the attached document for discussion, but I think that we can drop the orientation attribute as there are other ways of solving the problem. Guy _____________________________________________________________________ Guy Roberts PhD Senior Transport Network Architect DANTE Cambridge, UK +44 1223 371316 DANTE is the project co-ordinator and operator of GÉANT, the high-speed pan-European research and education network that is transforming the way researchers collaborate. Learn more at: www.geant.net<http://www.geant.net/> Like us on: www.facebook.com/GEANTnetwork<http://www.facebook.com/GEANTnetwork> Follow us at: www.twitter.com/GEANTnews<http://www.twitter.com/GEANTnews> DANTE is the trading name of Delivery of Advanced Network Technology to Europe Limited registered in England & Wales. Registration Number 2806796. Registered Office - 9400 Garsington Road, Oxford Business Park, Oxford OX4 2HN. _____________________________________________________________________