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(Direct) PTP over MPLS (?). Draft-ronc-ptp-mpls-00.txt (expired). Ron Cohen IETF Maastricht 2010 [email protected]. Transports. PTP UDP IPv6. PTP UDP IPv4. PTP Ethernet. PTP Ethernet PW. PTP MPLS. PTP UDP/IP MPLS. ???. PTP Sync/Delay Message Format. Scenarios. - PowerPoint PPT Presentation
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(Direct) PTP over MPLS (?)
Ron CohenIETF Maastricht 2010
Draft-ronc-ptp-mpls-00.txt (expired)
Transports
PTP Sync/Delay Message Format
TRANSPORT SPECIFIC MESSAGE TYPE VERSION = 2RESERVEDMESSAGE LENGTH
DOMAIN RESERVEDFLAGS
CORRECTION FIELD(48bits ns, 16bits scaled fractional ns)
RESERVED
SOURCE PORT IDENTITY
SEQUENCE IDCONTROL LOG MEAN MESSAGE INTERVAL
ORIGIN TIMESTAMP(48bits seconds, 32bits ns)
Scenarios
Carrier
Operator
Scenarios
Carrier
Operator
Timing Service
PTP Transport Service
MPLS Cloud
Last HopMicrowave
PTP Transport Service
Desired SLA
MPLS Cloud
PTPPTP
Main Requirement
More to handle…
Alternative: Distributed TC Approach
Direct PTP over MPLS
Internal Synchronization
Why Not PTP o Layer 2
802.3Ethernet
SDHPOS
802.17 RPR
PTP
Using MPLS Protection
P-Delay
A
B
C
D
E
Primary Path
Secondary Path
Using MPLS Protection
A
B
C
D
E
Primary Path
Secondary Path
Detour Path
And p2mp Sync Distribution
A
B
C
D
E
Sync
Why Not IP over MPLS?
PTP
LSP
Summary
Thanks