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Topology API Use Cases draft-amante-i2rs-topology-use-cases-01

Topology API Use Cases draft-amante-i2rs-topology-use-cases-01. Shane Amante Jan Medved, jmedved@cisco.com Stefano Previdi , sprevidi@ cisco.com Victor Lopez , vlopez@ tid.es. Changes Since Last Revision. Text & t erminology cleanup (e.g. info model instead of data model)

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Topology API Use Cases draft-amante-i2rs-topology-use-cases-01

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  1. Topology API Use Casesdraft-amante-i2rs-topology-use-cases-01 Shane Amante Jan Medved, jmedved@cisco.com Stefano Previdi, sprevidi@cisco.com Victor Lopez, vlopez@tid.es

  2. Changes Since Last Revision • Text & terminology cleanup (e.g. info model instead of data model) • Added the Virtual Network Topology Manager use case

  3. Present Mode of Operation +---------------+ +----------------+ | | Applications |-+ +----------------+ ^ ^ ^ SQL, RPC, ReST # | * SQL, RPC, ReST ... ########################## | ********************** # | * +------------+ | +------------+ | Statistics | | | Inventory | | Collection | | | Collection | +------------+ | +------------+ ^ | NETCONF, I2RS, SNMP, ^ | | CLI, TL1, ... | +------------------------+-----------------------+ | | | | | | +---------------+ +---------------+ +---------------+ |Network Element| |Network Element| |Network Element| | +-----------+ | | +-----------+ | | +-----------+ | | |Information| |<-LLDP->| |Information| |<-LMP->| |Information| | | | Model | | | | Model | | | | Model | | | +-----------+ | | +-----------+ | | +-----------+ | +---------------+ +---------------+ +---------------+

  4. The Topology Manager +---------------+ +----------------+ | | Applications |-+ +----------------+ ^ Websockets, ReST, XMPP... +------------------------+-------------------------+ | | | +------------+ +------------------------+ +-------------+ | Policy |<----| Topology Manager |---->|Orchestration| | Manager | | +--------------------+ | | Manager | +------------+ | |Topology Information| | +-------------+ | | Model | | | +--------------------+ | +------------------------+ ^ ^ ^ Websockets, ReST, XMPP # | * Websockets, ReST, XMPP ####################### | ************************ # | * +------------+ | +------------+ | Statistics | | | Inventory | | Collection | | | Collection | +------------+ | +------------+ ^ | I2RS, NETCONF, SNMP, ^ | | TL1 ... | +------------------------+------------------------+ | | | +---------------+ +---------------+ +---------------+ |Network Element| |Network Element| |Network Element| | +-----------+ | | +-----------+ | | +-----------+ | | |Information| |<-LLDP->| |Information| |<-LMP-->| |Information| | | | Model | | | | Model | | | | Model | | | +-----------+ | | +-----------+ | | +-----------+ | +---------------+ +---------------+ +---------------+

  5. Use Cases • Capacity Planning & Traffic Engineering • Virtual Network Topology Manager • Services provisioning • Path Computation Element • ALTO Server

  6. An Information Model for Network Topologiesdraft-medved-i2rs-topology-im-01.txt Jan Medved, jmedved@cisco.com Nitin Bahadur, nitinb@juniper.net Alexander Clemm, alex@cisco.com Hariharan Ananthakrishnan, hanantha@juniper.net

  7. Purpose • Information model for network topologies • Generic topology model, extensions for specific topologies • L3 Unicast IGP, OSPF, IS-IS as part of this draft • Can be extended for other topologies • Specified using RBNF • Applications • Data nodes capture and reconcile their understanding of network topology, propagate topology info • Network controllers represent controller network topology • Ask: Decide if network topology is in the WG’s scope; if yes, adopt as WG item

  8. Changes Since Last Revision • Incorporated feedback from the WG

  9. Info model structure Topology Node Link Termination Point • Links connect nodes, are terminated by termination points • Topologies can refer to underlay topologies • Links can refer to underlay links • Nodes can refer to underlay nodes • Unidirectional, point-to-point links represent non-ptp through hierarchies of nodes links

  10. Info model structure (contd.) Generic topology model Traffic engineering data definitions, used in multiple topologies Network Topology TED IGP Topology OSPF Topology ISIS Topology Other topologies (future) Model allows for multiple levels of refinement Additional topologies can be added at any refinement level

  11. Questions?

  12. Backup

  13. Infomodel structure (contd.) Topology Node Link IGP Topology Termination Point prefix IGP node IGP link • Derive IGP topology model elements • Integrity rules ensure links, nodes, topology of matching type

  14. Info model structure (contd.) Topology Node Link IGP Topology OSPF topo ISIS topo TP prefix IGP node IGP link • Pattern recurses ISIS link ISIS node OSPF node OSPF link

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