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Contents

Table of Contents
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Background

Application Co-existence and Integration Challenges

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VPN Service Modules and Inter-relationships

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Interface Manager

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Defining Granular interfaces (ODL-interfaces data-model)

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Binding Services on an Interface

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• Service binding data model used to bind a service on a particular interface
• Service module configures following parameters
  • Service-Priority
  • Service-Name
  • Service-Type
  • Service-Info
    • (for service-type openflow-based)
    • Flow-priority
    • Instruction-list
• Interface Manager maintains a Service dispatcher table to regulate pipeline dynamically between services
• Listens to service-binding changes and accordingly programs the dataplane (Table 0 & Service Dispatcher)

Service binding dataplane semantics

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Making SBI protocol agnostic (South bound renderers)

• Provide a flexible way to support multiple south bound protocols
• North-bound interface/data-model is decoupled from south bound plugins
• NBI Data change listeners select and interact with appropriate SBI renderers
• New renderers can be added to support new Southbound interfaces/protocols/plugins
• Needs to be re-concilied with Netvirt re-design proposal

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Shared Overlay Tunnel Service

• Provides tunnel creation/management services
  1. Can be configured to automatically create a homogenous bi-directional tunnel mesh (VxLAN/GRE/others) between agiven group of DPNs
  2. API to add new nodes into an existing tunnel mesh
  3. API to create uni-directional tunnels from a DPN to an external IP node (CE router) which may not be under SDN control
  4. Support for tunnel level redundancy by creating a logical-group-interface, combining more than one tunnel interfaces, and allow for load-balancing or failovers in the group
• API support to control monitoring of tunnel interfaces
• API to get egress-actions and ingress-rules/bindService for specified uni-directional tunnel
• NB Tunnel Up/Down events for services/ user-facing / analytics apps

Aliveness Monitor

• Provides Controller driven monitoring services for
  1. Point-to-point interfaces (VxLAN/GRE)
  2. From an interface to destination IP Node
• Consumes services from ARP, LLDP, Ping Modules
• Generate Aliveness Events
• Interface manager listens to Aliveness events and updates operational-state of interfaces
• Consumers register for monitoring services specifying monitored interfaces and monitoring parameters
• Uses –
  1. Physical topology monitoring
  2. monitoring of non-BFD transport tunnels
  3. Service Function Monitoring

ID Manager

• Generates and provides unique integer IDs from a pre-configured ID-Pool with configured range to requesting services
  1. APIs for C/D of ID-Pool, assignment and lookups of IDs to services
• Dual modes of operation
  1. Consistent ID generation – consistently provide the same ID for a particular unique key String, Id-value is retained across cluster restarts, and associated with unique key (implemented)
  2. Generic ID assignment, no guarantees of consistency or persistence (not implemented)
• Can be used to assign IDs for and manage resources such as Openflow Tables, Groups, Meters, Service IDs
• Used by Interface Manager for mapping service instances to logical tags in the data plane

MD-SAL UTIL

• Provides Java interfaces to interact with MD-SAL DS and southbound OF-plugin.
  1. APIs for programming Flows & Groups
  2. APIs for Data-Store Read/write
  3. Generic CDN listener

• Others?