Wan data transmission intent - one of IBN use cases

Abstract

With the advent of the digital era, there are more and more scenarios such as data off-site AI training, data off-site cloud, and the demand for big data transmission in the WAN is increasing. WAN data transmission involves throughput, delay, packet loss, security and other performance indicators, as well as cost investment. Users have been exploring how to achieve the best performance of data transmission at the lowest cost. This paper implements high quality WAN data transmission based on IBNS.¶

2. Conventions Used in This Document

3. Wan data transmission intent

As defined in [RFC9315]: "Intent is a declaration of operational goals that a network is supposed to meet and outcomes that the network is supposed to deliver, without specifying how to achieve or how to implement them. Those goals and outcomes are defined in a manner that is purely declarative - they specify what to accomplish, not how to achieve it."¶

Users have different performance requirements for data transmission, such as throughput, delay, packet loss rate, and security level, based on the data type and cost upper limit. These requirements are not optimal at the same time, or all requirements to be optimal will lead to very high costs, causing users to be unable to afford. When a user enters the data transmission intention in the IBNS, the user provides specific performance requirements and cost ceilings. The system calculates the configuration policy based on the counter requirements, cost upper limit, and network status. Then, you can translate the configurations of specific devices (including network devices, firewalls, and storage servers) based on the configuration policies.¶

Data transmission configuration policies include the selection and parameter configuration of WAN congestion control, packet loss recovery, data encryption, packet loss retransmission, and other technical solutions.¶

Data transmission cost is mainly dedicated line rental cost, which is related to bandwidth, service time, distance and other parameters.¶

4. Intent lifecycle

According to the intent lifecycle in [RFC9315],after a user enters data transmission requirements, the IBNS processes the user's intent to meet the requirements.¶

(1) Input data transmission intention, clarify performance requirements, upper limit of cost input, etc.¶

(2) The system detects the current network performance in real time,and configuration strategy obtained through comprehensive calculation.¶

(3) Translate the configuration strategy into specific device configuration. Equipment includes network equipment and IT equipment.¶

(4) Detect the performance indicators of data transmission in real time and predict the cost of completing data transmission.¶

(5) Real-time calculation of whether the configuration strategy needs to be adjusted according to the detected network performance, data transmission performance and cost input.Update device configuration while changing configuration policy.¶

(6) Real-time analysis of cost input and data transmission performance indicators, and feedback to users.¶

         User Space   :       Translation / IBS       :  Network Ops
                      :            Space              :     Space
            (1)       :              (2)              :      (3)
        +----------+  :  +----------+   +-----------+ : +-----------+
Fulfill |recognize/+---> |translate/+--^+  learn/   +--^+ configure/|
        |generate  |     |          |   |  plan/    |   | pro^ision |
        |intent    +^--+ |  refine  |   |  render   | : |           |
        +----^-----+  :  +----------+   +-----^-----+ : +------+----+
             |        :                       |       :        |
.............|................................|................|.....
             |        :                  +--------+   :        ^
             |        :                  |>alidate|   :  +-----+----+
             |        :                  |----^---+ <----+ monitor/ |
Assure   +---+---+    :  +---------+    +---------+   :  | obser^e/ |
         |report | <---+ |abstract +^---+ analyze | <----+          |
         +-------+    :  +---------+    |aggregate|   :  +----------+
                      :                 +---------+   :
             (6)                     (5)                      (4)

5. Conclusion

This is a usecase of IBNS, which uses IBNS to realize wide-area data transmission. After the user enters the performance parameters and the upper limit of the cost input, IBNS will automatically select the optimal configuration strategy, and can achieve high-quality data transmission services without manual participation.¶

8. References