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Modify

Modify. Modify can have a lot of meanings Goal of this discussion Constrain the meaning for NSI v1 Agree on the “NSI v1” scope of modify Rationale NSI users “predict” their service requirements and make advanced reservations Predictions may or may not be exact, may change over time

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Modify

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  1. Modify • Modify can have a lot of meanings • Goal of this discussion • Constrain the meaning for NSI v1 • Agree on the “NSI v1” scope of modify • Rationale • NSI users “predict” their service requirements and make advanced reservations • Predictions may or may not be exact, may change over time • Modify increases the “usability” of the service • In the end, concept is “pay per use” • “No” is an acceptable response from the network • Cancel and re-request is always an option

  2. Modify primitive proposal v1 • Modify constraints • Applies to the current path/set of resources only • If a new path computation is required, then modify rejected. • New resources may be provisioned along the same path or resources may be released • Three Service Definition parameters proposed to be in-scope for modify v1 • Bandwidth (increase or decrease) • Start time • Duration or End-time (increase/decrease) • If network cannot modify the state of existing reserved or provisioned resources, it rejects the modify • Current state of reservation not modified • If modify is accepted, Service Definition parameters is updated • The resource schedule is updated.

  3. Modify primitive operation NSA-Provider (s) NSA-Requestor Modify request Adheres to common Tree/chain model of processing Modify response Confirm when all Responses received Modify confirm Modify reject

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