Dont forget-the-control-plane
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Dont forget-the-control-plane

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MPLS-TP control plane is beneficial. It brings significant automation and reduced OPEX. Management is provisioned and control plane NEs will co-exist in many networks. Many vendors are building NEs ...

MPLS-TP control plane is beneficial. It brings significant automation and reduced OPEX. Management is provisioned and control plane NEs will co-exist in many networks. Many vendors are building NEs with both management and control plane provisioning.

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Dont forget-the-control-plane Dont forget-the-control-plane Presentation Transcript

  • MPLS-TPDon’t Forget the Control Plane! Pat Moore Metaswitch Networks Network Technologies Division pat.moore@metaswitch.com Visit us at stand 205
  • Metaswitch ExpertisePreviously Data Connection Ltd. (DCL)• Network Protocol source code since 1983 Customers• 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 Copyright © Metaswitch Networks | www.metaswitch.com | 1
  • Agenda• MPLS-TP management provisioned vs. control plane• The benefits of an MPLS-TP control plane• Where does it fit? Copyright © Metaswitch Networks | www.metaswitch.com | 2 View slide
  • MPLS-TP Management Provisioned• Full centralized control of • Each LSP • Each hop of each LSP • Each backup LSP • Packet LSP and PW sublayers• Intelligence resides in the NOC• Simple and predictable• Works well in simple topologies Copyright © Metaswitch Networks | www.metaswitch.com | 3 View slide
  • MPLS-TP with a Control Plane• As management provisioned • Same OAM • Plus a control plane • Both modes can co-exist• One-touch provisions entire LSP• Intelligence resides in NEs • Auto-discovery of NEs and topology • Auto-tracking of available capacity • Route calculation • Signalling of LSP• Automated operation  Reduced OPEX Copyright © Metaswitch Networks | www.metaswitch.com | 4
  • Agenda• MPLS-TP management provisioned vs. control plane• The benefits of an MPLS-TP control plane• Where does it fit? Copyright © Metaswitch Networks | www.metaswitch.com | 5
  • Automated Discovery• IGP (e.g. OSPF) used to auto-discover NEs and links• Opaque LSAs flood link attributes • Available bandwidth • Latency • Whatever is important in your network• Standard TE extensions to OSPF and IS-IS Copyright © Metaswitch Networks | www.metaswitch.com | 6
  • Link Bundling• New link detected by local NEs• No change in network topology • IGP floods increased capacity on bundled link • Improved IGP scalability• Signalling chooses component link to use for each LSP Copyright © Metaswitch Networks | www.metaswitch.com | 7
  • Automated LSP Setup• Ingress NE processes LSP setup request (egress, bandwidth, etc.) • OSPF-TE route calculation runs on ingress NE • GMPLS signalling sets up each NE on the MPLS-TP path• Standard GMPLS extensions to RSVP-TE• Targeted LDP signalling used for PW layer Copyright © Metaswitch Networks | www.metaswitch.com | 8
  • Automated Protection and Restoration• Various GMPLS protection and restoration schemes • Mesh Restoration and Segment Recovery defined • Linear and Ring Protection underway• Substantial automation • Automated diverse route calculations for 1:N protection • Automated placement of branch and merge points • Automated reversion when primary LSP recovers • Intelligent use of backup LSP for low priority traffic Copyright © Metaswitch Networks | www.metaswitch.com | 9
  • On-demand Provisioning• LSP Setup request does not have to come from NOC • E.g. router acting as client to MPLS-TP layer • Router requests extra network capacity at its attached NE• User-to-Network Interface (UNI) • Client-server model between network layers Copyright © Metaswitch Networks | www.metaswitch.com | 10
  • Control Plane Extensions and Benefits• OAM signalling • Enables NEs to agree what OAM mechanisms are to be used • No spurious alarms as OAM start is synchronized with end-to-end LSP activation  Reduced OPEX• Management <–> Control Plane hand-off • Management-established LSPs transitioned to control plane • …and vice-versa  Facilitates network migration• Multi-segment pseudowire • Adapting existing MS-PW to the MPLS-TP profile  Supports more diverse deployment scenarios• Standards baked Copyright © Metaswitch Networks | www.metaswitch.com | 11
  • Agenda• MPLS-TP management provisioned vs. control plane• The benefits of an MPLS-TP control plane• Where does it fit? Copyright © Metaswitch Networks | www.metaswitch.com | 12
  • Typical Deployment Scenario Service MS-PW Static Static LSP Signalled LSP Static LSP Static S-PE S-PE T-PE T-PE Access Access Backbone• Three MPLS-TP domains shown • Backbone uses control plane • Access uses management provisioning• MS-PW crosses domains to provide the end-to-end service Copyright © Metaswitch Networks | www.metaswitch.com | 13
  • Commonality Across Network Layers• Multiple layers can include • MPLS-TP transport service sublayer (e.g. PW for L2 Ethernet service) • MPLS-TP transport sublayer • TDM layer (OTN ODU) • WDM layer (OTN OCh)• Each Carrier uses only the layers it needs • Only use a layer if it adds value • Other layers possible• GMPLS is common Copyright © Metaswitch Networks | www.metaswitch.com | 14
  • Conclusion: Don’t Forget the Control Plane• MPLS-TP control plane is beneficial • It brings significant automation and reduced OPEX • Management provisioned and control plane NEs will co-exist in many networks • Many vendors building NEs with both management and control plane provisioning• Standards are in place • GMPLS has been around for years• Common GMPLS technology across layers • Coherent management Come see • Same look and feel Metaswitch MPLS-TP at the EANTC Live Demo Copyright © Metaswitch Networks | www.metaswitch.com | 15
  • Thank youpat.moore@metaswitch.com Visit us at stand 205