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Multi-Layer Control Plane - Session: Packet-Optical Transport & Switching Innovation
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Multi-Layer Control Plane Session: Packet-Optical Transport & Switching Innovation
Joe WhitehouseMetaswitch Networks
Network Technologies DivisionJoe.whitehouse@metaswitch.com
Copyright © Metaswitch Networks | www.metaswitch.com | 2
Metaswitch Control Plane Expertise
Previously Data Connection Ltd. (DCL)• Network Protocol source code since 1983
• 1st portable GMPLS protocol solution
• 1st portable O-UNI protocol solution
• 1st portable LMP protocol solution
• 1st portable G.709 OTN protocol solution
• 1st portable MPLS-TP protocol solution
Customers
Copyright © Metaswitch Networks | www.metaswitch.com | 3
P-OTS: Don’t Forget About the Control Plane
• Control plane functions• Automated LSP set up, tear down• On-Demand provisioning• Automated protection & restoration• Link bundling• Automated discovery
• Control plane benefits• Reduced OPEX• Facilitates network migration• OAM negotiation• Increased availability• Quicker service set up time• Reduced human errors• New services
Source: Infonetics, 2011
Key application for service providers: ASON/GMPLS Control Plane
Copyright © Metaswitch Networks | www.metaswitch.com | 4
Multi-Layer Control Plane
• Multiple layers can include• MPLS-TP transport service sublayer• MPLS-TP transport sublayer• TDM layer (ODU)• WDM layer (OCh)
• GMPLS is common
• Carriers use only the layers needed
Copyright © Metaswitch Networks | www.metaswitch.com | 5
Multi-Layer Control Plane: Making it Work
• Client – Server model• Common in our industry: see IETF, MEF, OIF UNI implementations
• Horizontal and vertical interoperability
Source: OIF
Copyright © Metaswitch Networks | www.metaswitch.com | 6
Inter-Area Control Plane ConsiderationsPCE
Domain A Domain B Domain C
Optimal pathcalculated
Optimal pathcalculated
Optimal pathcalculated
= PCE Server = PCE Protocol = TE Path
• More than just inter-area solution• Lower CAPEX• Optimal relocation of network intelligence• Solves complex routing issues (WDM/OTN)
Copyright © Metaswitch Networks | www.metaswitch.com | 7
Summary
• Control plane has significant benefits
• Large demand by service providers
• P-OTS/OTN = Multi-layer Multi-layer control plane• GMPLS is common across layers• GMPLS standardized and well understood for years
• Inter-area and client-server considerations to be made
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