encapsulation methods for transport of fibre channel over mpls draft-roth-pwe3-fc-encap-00.txt pwe3...
DESCRIPTION
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)TRANSCRIPT
Encapsulation Methods for Transport of Fibre Channel Over MPLS
draft-roth-pwe3-fc-encap-00.txtPWE3 IETF-63 August 2005
•Ronen Solomon [email protected]•Moran Roth [email protected]
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63rd IETF PWE3
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.
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63rd IETF PWE3
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)
CE1FC_device
CE2FC_device
Provideredge 1
Provideredge 2
Customer Edge 1Customer Edge 2
Attachment circuit (AC)Native Fibre channel
N_/E_/F_Port
PW1
PSN tunnel
PE1 PE2
Pseudo Wire
Emulated Service
PW serviceEND
PW serviceEND
Attachment circuit (AC)Native Fibre channel
N_/E_/F_Port
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63rd IETF PWE3
FC over PW – PWE3 Provider Edge reference model
Native service processing (NSP) for Fibre Channel is handled by T.11
CE PSN
PHYNative service
Processing(NSP)FC-BB
PWTermination
PSNTunnel
PHY
PHYNative service
Processing(NSP)FC-BB
PWTermination
PSNTunnel
PHY
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63rd IETF PWE3
FC over PW - Protocol levels and layers
FC-0
FC-1
FC-BB
FC Interface
PSN LayersTransport Interface
To/From FC Ports
To/From PSN Network
Physical layer
PW
PSN
NSP Layers
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63rd IETF PWE3
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.
Primitive Signals andPrimitive Sequences
CE1FC_device
CE2FC_device
Provider edge 1 Provider edge 2Customer Edge 1
Customer Edge 2
PW1
PE1 PE2FC frames
FC-BB control frames
Primitive Signals andPrimitive Sequences
FC-BB NSP FC-BB NSP
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63rd IETF PWE3
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.
Primitive Signals andPrimitive Sequences
CE1FC_device
CE2FC_device
Provider edge 1 Provider edge 2Customer Edge 1
Customer Edge 2
PW1
PE1 PE2FC frames
FC-BB control frames
Primitive Signals andPrimitive Sequences
FC-BB NSP FC-BB NSP
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63rd IETF PWE3
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
MPLS Label
PW Label
ControlWord
PseudowiredemultiplexorPSN tunnel
Optionalcontrol word
FC-BBheader FC Frame
4Byte 4Byte 4Byte 8Byte 36-2148Byte
FC_port data frame encapsulation
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63rd IETF PWE3
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