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Status Under review
Workspace SevOne
Categories Network Management System (NMS)
Created by Guest
Created on Nov 21, 2024

RELATED IDEAS

flow de-duplication within DI

Flow duplication is a big issue when reporting and the same flow records are sent from different flow exporters (routers that the traffic transits). It's not easy to define groups or select specific devices for reporting, particularly when there a full-mesh and other complexities such as SDWAN. As a result stats are completely skewed and exaggerated and in many cases unusable when looking at the "sum" of data. Flow de-duplication has been requested many times before and again raised as an idea by Rupert Gregory, SEV1-I-219.

This idea is a variation of this in providing the capability within DI itself. We already provide the ability to split the traffic by interface. Looking at the attached example, it is clear we have the same flow from multiple sources. The idea here is to provide an option that does this in the background and collapses / filters the data based on a number of predetermined fields that have the same value. 

Without splitting it out like this the values are all added together so we end up with 4 * whatever is shown and completely inaccurate (in this simple example).

duplicate_flows...
duplicate_flows.png
Open full size
duplicate_flows.png
Idea priority High
  • Admin
    Krishnan Subramanian
    Reply
    |     Dec 10, 2024

    @Guest

    what are customer use cases/costs/processes that are impacted by not having this feature?

  • Guest
    Reply
    |     Nov 22, 2024

    The idea here is to use key fields as defined by the view selected to filter on "uniqueness". DI dynamically creates a filter (in memory) when the report is run.

  • Admin
    Krishnan Subramanian
    Reply
    |     Nov 21, 2024

    @Guest

    I increased the priority of the ticket.

    This feature is not a simple ask given our flow architecture.

    We do have a few workarounds like:

    1) limiting flow export from devices to avoid duplicate flow

    2) selecting resources in the DI reports to avoid duplicate flow. This could be done by selecting specific directions or interfaces.

    3) use flow policies (rules) to deny duplicate flow

    4) As you have shown, displaying the data split by interface provides a way get more accurate numbers in the reports

  • Guest
    Reply
    |     Nov 21, 2024

    Please change this to high priority (was accidentally submitted without setting)

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