Manual Chapter : Common elements for system config

Applies To:

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F5 DDoS Hybrid Defender

  • 15.0.0
Manual Chapter

Common elements for system config

Use this for common elements only.
  1. On the Main tab, click
    System
    Configuration
    Local Traffic
    Eviction Policy List
    .
  2. On the Main tab, click
    System
    Configuration
    Local Traffic
    General
    .
    The Local Traffic General settings screen opens.
  3. Click
    Create
    .
    The New eviction policy screen opens.
  4. In the
    Name
    field, type a name for the eviction policy.
  5. In the
    Trigger
    fields, type a high and low water mark for the eviction policy.
    This measure specifies the percentage of the quota, for this context, before flow eviction starts (high water mark) and ends (low water mark).
  6. Enable
    Slow Flow Monitoring
    to monitor flows that are considered slow by the system, and specify the slow flow threshold in bytes per second.
    This combination of settings monitors the system for flows that fall below the slow flow threshold for more than 30 seconds.
  7. In the
    Grace Period
    field you can set a grace period, in seconds, between the detection of slow flows that meet the threshold requirement, and purging of slow flows according to the
    Slow Flow Throttling
    settings.
  8. For the
    Slow Flow Throttling
    setting, set the slow flow throttling option.
    Disabled
    Slow flows are monitored, but not removed from the system when the threshold requirement is met for 30 seconds.
    Absolute
    Slow flows are removed from the system when the threshold requirement is met for 30 seconds. Setting an absolute limit removes all slow flows beyond the specified absolute number of flows.
    Percent
    Slow flows are removed from the system when the threshold requirement is met for 30 seconds. Setting a percentage limit removes that percentage of slow flows above the specified monitoring setting, so the default value of 100% removes all slow flows above the slow flow threshold, after the grace period.
  9. In the Algorithms area, configure the strategies that the eviction policy uses to remove flows by moving algorithms from the
    Available
    list to the
    Selected
    list, and configuring applicable settings for the algorithms.
  10. From the
    Eviction Policy
    list, select the eviction policy to apply globally.
    The global context requires an eviction policy. If you do not apply a custom eviction policy, the system default policy,
    default-eviction-policy
    is applied and selected in this field.
  11. Click
    Update
    to apply the changes.
    The eviction policy is applied to the context.
  12. Clear the
    Maximum Multicast Rate
    check box.
  13. Click
    Update
    to apply the changes.