@techreport{delord-pwe3-cw-bit-etree-07, number = {draft-delord-pwe3-cw-bit-etree-07}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-delord-pwe3-cw-bit-etree/07/}, author = {Simon DeLord and Raymond Key and Frederic JOUNAY and Wim Henderickx and Lucy Yong and Lizhong Jin}, title = {{Control Word Reserved bit for use in E-Tree}}, pagetotal = 9, year = 2012, month = apr, day = 16, abstract = {The extension described in this document allows a pair of PEs connected via an Ethernet Pseudowire (PW) to signal via the use of the Control Word (CW) whether the Ethernet frame encapsulated is coming from a Root AC or a Leaf AC. This allows a PE receiving this frame to decide whether it can be forwarded to a Leaf AC or not. Such forward or drop decision is an additional filtering action after the MAC-based forwarding decision. This applies to both P2P PW and P2MP PW.}, }