StrategyChoice » History » Version 5
Junxiao Shi, 05/17/2014 08:29 PM
| 1 | 4 | Junxiao Shi | # Strategy Choice Management |
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| 2 | 1 | Junxiao Shi | |
| 3 | 4 | Junxiao Shi | **Strategy Choice Management** is a module of [[Management|NFD Management protocol]]. |
| 4 | It provides: |
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| 5 | 1 | Junxiao Shi | |
| 6 | 4 | Junxiao Shi | * commands to choose the forwarding strategy for a namespace |
| 7 | 5 | Junxiao Shi | * a dataset of strategy choices |
| 8 | 1 | Junxiao Shi | |
| 9 | 5 | Junxiao Shi | Strategy Choice Management commands and datasets are published in namespace `ndn:/localhost/nfd/strategy-choice`. |
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| 13 | 4 | Junxiao Shi | ## Strategy |
| 14 | 1 | Junxiao Shi | |
| 15 | 4 | Junxiao Shi | A strategy is represented by a Name. |
| 16 | 1 | Junxiao Shi | |
| 17 | 4 | Junxiao Shi | NFD currently supports builtin strategies only. The following strategies are available: |
| 18 | 1 | Junxiao Shi | |
| 19 | 4 | Junxiao Shi | * ndn:/localhost/nfd/strategy/best-route |
| 20 | * ndn:/localhost/nfd/strategy/broadcast |
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| 21 | * ndn:/localhost/nfd/strategy/client-control |
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| 22 | * ndn:/localhost/nfd/strategy/ncc |
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| 25 | 4 | Junxiao Shi | ## Control Commands |
| 26 | 1 | Junxiao Shi | |
| 27 | 4 | Junxiao Shi | [[ControlCommand]] **management-module**: `strategy-choice` |
| 28 | 3 | Junxiao Shi | |
| 29 | 4 | Junxiao Shi | ### Set the strategy for a namespace |
| 30 | 1 | Junxiao Shi | |
| 31 | 4 | Junxiao Shi | **command-verb**: `set` |
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| 33 | 4 | Junxiao Shi | ControlParameters fields: |
| 34 | 1 | Junxiao Shi | |
| 35 | 4 | Junxiao Shi | * Name (required) |
| 36 | * Strategy (required) |
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| 37 | 1 | Junxiao Shi | |
| 38 | 4 | Junxiao Shi | Strategy must be a `Name` that represents a builtin strategy. |
| 39 | If Strategy does not match any builtin strategy, the command fails with code 504. |
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| 40 | 1 | Junxiao Shi | |
| 41 | 4 | Junxiao Shi | ### Unset the strategy for a namespace |
| 42 | 1 | Junxiao Shi | |
| 43 | 4 | Junxiao Shi | **command-verb**: `unset` |
| 44 | 1 | Junxiao Shi | |
| 45 | 4 | Junxiao Shi | ControlParameters fields: |
| 46 | 1 | Junxiao Shi | |
| 47 | 4 | Junxiao Shi | * Name (required) |
| 48 | 1 | Junxiao Shi | |
| 49 | 4 | Junxiao Shi | After this operation, the effective strategy at Name is inherited from the parent. |
| 50 | 1 | Junxiao Shi | If there is no strategy defined at Name, this command does nothing, but is still considered successful. |
| 51 | |||
| 52 | Name must not be `ndn:/`, otherwise the command fails with code 403. |
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| 53 | 5 | Junxiao Shi | |
| 54 | |||
| 55 | ## Strategy Choice Dataset |
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| 56 | |||
| 57 | Strategy choices for namespaces are published as a [[StatusDataset|Status Dataset]] at `ndn:/localhost/nfd/strategy-choice/list`. |
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| 58 | |||
| 59 | Each face is represented by a **StrategyChoice** block: |
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| 60 | |||
| 61 | StrategyChoice := STRATEGY-CHOICE-TYPE TLV-LENGTH |
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| 62 | Name |
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| 63 | Strategy |
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| 64 | |||
| 65 | * **Name** is the namespace on which a strategy is chosen. |
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| 66 | * **Strategy** is the strategy chosen for this namespace. |
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| 67 | |||
| 68 | ## TLV-TYPE assignments |
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| 69 | |||
| 70 | Type | Assigned value | Assigned value (hex) |
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| 71 | ------------------------------------------- | ----------------- | -------------------- |
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| 72 | StrategyChoice | 128 | 0x80 |