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1588 over MPLS Update

1588 over MPLS Update. draft-ietf-tictoc-1588overMPLS-02 IETF 84 (Vancouver), July 2012 Shahram Davari. Requirements. Transport 1588 messages over MPLS network Support Master, Slave, Boundary Clock and Transparent Clock at LER Support Transparent clock at LSR

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1588 over MPLS Update

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  1. 1588 over MPLSUpdate draft-ietf-tictoc-1588overMPLS-02 IETF 84 (Vancouver), July 2012 Shahram Davari

  2. Requirements • Transport 1588 messages over MPLS network • Support Master, Slave, Boundary Clock and Transparent Clock at LER • Support Transparent clock at LSR • Backward compatible with non-1588-Capable LSRs

  3. Master Clock at LER Master Clock PTP-LSP LER LER LSR1 LSR2 LSR3 (A) (B) LSP Label LSP Label IP header PW Label UDP header CW Ethernet Header PTP Message PTP Message

  4. Slave Clock at LER Slave Clock PTP-LSP LER LER LSR1 LSR2 LSR3 (A) (B) LSP Label LSP Label IP header PW Label UDP header CW Ethernet Header PTP Message PTP Message

  5. Boundary Clock Boundary Clock at LER Slave Clock Master Clock PTP-LSP LER LER LSR1 LSR2 LSR3 (A) (B) (A) (B) IP header Ethernet Header LSP Label LSP Label UDP header IP header PW Label PTP Message UDP header CW PTP Message Ethernet Header PTP Message PTP Message

  6. Transparent Clock at LER Measure Transit Delay Update Correction Field PTP-LSP LER LER LSR1 LSR2 LSR3 (A) (B) (A) (B) IP header Ethernet Header LSP Label LSP Label UDP header IP header PW Label PTP Message UDP header CW PTP Message Ethernet Header PTP Message PTP Message

  7. Transparent Clock (TC) at LSR Measure Transit Delay Update Correction Field PTP-LSP LER LER LSR1 LSR2 LSR3 (A) (B) (A) (B) LSP Label LSP Label LSP Label LSP Label IP header PW Label IP header PW Label UDP header CW UDP header CW Ethernet Header Ethernet Header PTP Message PTP Message PTP Message PTP Message

  8. Backward Compatibility Transparent Clock Transparent Clock Ingress LER Must be 1588-Capable PTP-LSP LER LER LSR1 LSR2 LSR3 1588-Capable LER 1588-Capable LSR Non-1588-Capable LSR 1588-Capable LSR

  9. Current Solution draft-02 • Use standard Encapsulation • IP/MPLS or PW • Use Dedicated LSPs/PWs to carry 1588 • To detect 1588 messages without DPI • PTP LSP/PW is signaled • RSVP-TE extension • LDP, BGP PW signaling extension (FFS) • Routers advertise their 1588-capability • OSPF, IS-IS extension

  10. Proposed Enhancements to draft-03 • Draft-03 to only describe data plane behavior • Separate drafts needed for each of the Routing and Control Plane protocol enhancements • Make the solution more generic solution • Support PTP, NTP, Special Shim, etc. • Support Time-stamping and Correction Field update

  11. Proposed Enhancements to draft-03 • Signal the following in OSPF, ISIS • 1588 capability per-port • Signal the following via LDP, BGP, RSVP-TE • Offset to the Timing message • Timing message type (PTP, NTP, Special Timing Shim, etc) • Action Type (TS or CF update)

  12. Status • Draf-00 published Jan 2011 • Draft-02 published Oct 2012 • Draft-03 was written but not officially released • Plan is to release draft-03 after Vancouver meeting based on feedback from affected WGs

  13. Next Step • Require review and comments from: • TICTOC WG • MPLS WG • PWE3 WG • OSPF WG • ISIS WG • Publish draft-03

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