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1588 over MPLS Update

1588 over MPLS Update. draft-ietf-tictoc-1588overMPLS-02 IETF 83 (Paris), Mar 2012 Shahram Davari. Requirements. Transport 1588 messages over MPLS domain Support Master Clock at LER Support Slave Clock at LER Support Boundary Clock at LER Support Transparent clock at LER/LSR

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1588 over MPLS Update

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  1. 1588 over MPLSUpdate draft-ietf-tictoc-1588overMPLS-02 IETF 83 (Paris), Mar 2012 Shahram Davari

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

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

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

  5. Boundary Clock Boundary Clock at LER Slave Clock Master Clock 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 (optional) PTP Message Ethernet Header PTP Message PTP Message

  6. Transparent Clock at LER Measure Transit Delay Update Correction Field 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 (optional) PTP Message Ethernet Header PTP Message PTP Message

  7. Transparent Clock (TC) at LSR Measure Transit Delay Update Correction Field 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 (optional) UDP header CW (optional) 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 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 PTP LSPs 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 & Offset to TS • OSPF, IS-IS extension

  10. Proposed Enhancements draft-03 • Make it a more generic solution • Transparently Support any timing protocol • PTPv1, PTPv2, NTP, etc. • Support Time-stamping or Correction Field update • Signal the following (via OSPF/ISIS-TE, RSVP-TE): • 1588 capability per-port • Offset to the TS or CF • Action Type (TS or CF) • Field Type (PTPv1, PTPv2, NTP, etc)

  11. Status • Draft-00 published Jan 2011 • Draft-02 published Oct 2012 • Draft-03 will be posted after Paris

  12. Next Step • Require review and comments from: • TICTOC WG • MPLS WG • PWE3 WG • OSPF WG • ISIS WG

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