Encapsulation Methods for Transport of Fibre Channel Over MPLS draft-roth-pwe3-fc-encap-00.txt PWE3 IETF-63 August 2005 Ronen Solomon Moran Roth

63 rd IETF PWE3 2 Overview  Fibre Channel transport over MAN and WAN to extend SAN applications such as disaster recovery and business continuity.  Market demands Fibre Channel services over PSN to allow shared infrastructure.  PWE3 offers a service agnostics, Layer 2 transport for various protocols.  Simplicity and transparency are key requirements for deployment of FC services from the carrier perspective.  Reuse the exiting building blocks as defined by the PWE WG to support FC service.

63 rd IETF PWE3 3 FC over PW – PWE3 network reference model  Attachment circuit includes Native Fibre Channel ports N_Port – end-node (disk, server) F_Port – fabric-switch (connected to N_Port) E_Port – fabric extension (between switches)

63 rd IETF PWE3 4 FC over PW – PWE3 Provider Edge reference model  Native service processing (NSP) for Fibre Channel is handled by T.11

63 rd IETF PWE3 5 FC over PW - Protocol levels and layers FC-0 FC-1 FC-BB FC Interface PSN Layers Transport Interface To/From FC Ports To/From PSN Network Physical layer PW PSN NSP Layers

63 rd IETF PWE3 6 FC Over PW – Encapsulation Guideline  FC data frame is carried transparently in one PW PDU.  NSP control frame (WAN flow control, Echo) is carried transparently in one PW PDU.

63 rd IETF PWE3 7 FC Over PW – Encapsulation Guideline  FC Primitive Sequences (control signals) are terminated at the local FC-BB NSP and sent as single control frame.  FC Primitive Signals (Idle, R_RDY credits) are terminated at the local FC-BB NSP.

63 rd IETF PWE3 8 FC over PW – Encapsulation over MPLS/PW  Frame Encapsulation MPLS PSN label PW label Optional control word FC-BB-Header (Data/control indication, FC specific) FC frame

63 rd IETF PWE3 9 FC over MPLS – PWE3 requirements  Define new encapsulation method for Fibre channel over PW  Assign new PW Type “Fibre Channel port mode”  Add FC to the PW types in PWE3 Charter  Maintain the PWE control word as in “draft-ietf-pwe3- cw-05.txt”  Adopt a new PWE3 working item