Transcript Standards Executive Board

draft-papadimitriou-enhanced-LPSs
D.Papadimitriou (Alcatel)
J.Jones
Enhanced LSP Services
IETF 49th Meeting - San Diego
IETF 49th Meeting - San Diego
PAPADIMITRIOU Dimitri
INTRODUCTION

Current developments on IPO networking challenging same
problem as IP:
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enhanced service to be included from the beginning within the protocols,
mechanisms and parameters used in optical networking
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otherwise future needs won't be covered by current IPO developments.
Independently of the implementation, model, protocols, etc.
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Current IP developments:

Traffic Engineering and Load Balancing
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Protection - Restoration Services

QoS Networks (Integrated or Differentiated)

Privacy (Virtual Private Networks, Security)

Multicast Services
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PAPADIMITRIOU Dimitri
Scope and Objective
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Define value added services to be provided by the OTN
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Focus non-PSC Optical Transport Network (G-MPLS Signaling)
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Objectives (emergent model)


Protocol independent parameters
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Model independent parameters
Integration of the needed ‘parameter extensions’ for policyrelated services in a distributed approach
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PAPADIMITRIOU Dimitri
Enhanced G-LSP Services

Protection - Restoration Services
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Class of Priorities (CoP)
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CoS Model
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OTN Service Levels
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Optical Multicast Services
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VPoN Model
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PAPADIMITRIOU Dimitri
Example: G-LSP Identification
OXC
OXC
OXC
OXC
AS 1580
OXC
OXC
OXC
G-LSP ID scalable
AS 6510
definition: Carrier ID +
Identifier (Inter) or Node
ID + Identifier (Intra)
OXC
OXC
IrDI-NNI
IrDI-NNI
IrDI-NNI
OXC
OXC
AS 9350
OXC
OXC
OXC
IrDI-NNI
OXC
OXC
OXC
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AS 2540
OXC
PAPADIMITRIOU Dimitri
Protection and Restoration Services (1)
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Protection service:
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Type: internal OTN - source and/or destination drop side
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Level: 0:1 - 1:1 - M:N - 1+1
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Path state monitoring: inherent (default) - non-intrusive
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Inherent for TDM: LoP and AIS
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Inherent for Optical: LoL and LoS
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Non-intrusive: Unequipped (default) - misconnection (J0,J1,J2 mismatch) BER
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Priority: related to the link selection
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Strategy: revertive (default) or non-revertive
IETF 49th Meeting - San Diego
PAPADIMITRIOU Dimitri
Protection and Restoration Services (2)
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Restoration (rerouting) service:
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Group: identifies the group to which G-LSP belongs
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Status: primary (0 to N) and backup (0 to M) - Client: P and B bit
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Priority (recovery priority): associated to G-LSP group
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Provisioning: provisioned or not-provisioned (+ max restoration
time)
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Strategy: revertive (default) or non-revertive
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PAPADIMITRIOU Dimitri
CoS Model
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Optical CoS: Best Effort - Bronze - Silver - Gold Services
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Per VPoN CoS
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CoS Content:
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Protection - Restoration
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(Class of) Priority - Preemption
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Routing Diversity scope
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Signaling Security
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Signaling Delay
Default Behavior and Carrier specific CoS content supported
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PAPADIMITRIOU Dimitri
Optical Multicast
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Principle: based optical signal split (1:2) and unidirectional G.LSP
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Directionality indicates FAN from source to destinations [1;M]
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Optical Multicast concept used as ‘ Partial 1:1 Restoration (P - B bits)
CSPF Route [Node 1 [Node 2 [Node 3 [Dest 1; Dest 2]]; Node 4 [Node 5 [Dest 3; Dest 4]]]]
OXC
1:2
OXC
Dest 1
1:2
1:4
OXC
Dest 2
Node 2
Node 3
OXC
OXC
Dest 3
Node 5
Dest 4
Source
Node 1
1:2
Node 4
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1:2
PAPADIMITRIOU Dimitri
VPoN (Virtual Private optical Networks) Model
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
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VPoN Identifiers
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Client ID: CNE Group identifier
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User-Group ID: VPN Identifier
VPoN models
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based on Client ID and User-Group ID
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based only on User-Group ID
VPoN associated features
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Address space per VPoN
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Isolation of Resources and Protection Groups
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Inter and Intra-Group Preemption (depending on internal OTN policy)
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G.LSP Disjointness per VPoN
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PAPADIMITRIOU Dimitri
CONCLUSION
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Integrate as early as possible enhanced services in the definition of
parameters and their support in the OTN
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Harmonize the definition and the specifications of the services at
UNI and NNI (and corresponding parameters definition)
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Include the Protection-Restoration Service, Optical Multicast
Services, Class of Priorities (CoP), CoS Model, OTN Service Levels
and VPoN Model within the CCAMP/IPO scope
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Future improvements (protocol specification):
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
Optical multicast
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Protection-Restoration support at the UNI and NNI
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CoS - VPoN model
Objective: WG Document for Network Services in CCAMP WG
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PAPADIMITRIOU Dimitri