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ME60 V800R010C10SPC500 Configuration Guide - IP Routing 01

This is ME60 V800R010C10SPC500 Configuration Guide - IP Routing
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Configuring Route or Tunnel Iteration Suppression in Case of Flapping

Configuring Route or Tunnel Iteration Suppression in Case of Flapping

Usage Scenario

In route or tunnel iteration scenarios, if a route or tunnel flaps frequently, services that depend on the route or tunnel are iterated frequently, causing frequent route updates. As a result, the CPU usage of the system keeps increasing. To solve the problem, enable route or tunnel iteration suppression in case of flapping. The suppression reduces the route update frequency and the CPU usage. To configure suppression periods for route or tunnel iteration, run the route recursive-lookup delay command.

Pre-configuration Tasks

Before configuring route or tunnel iteration suppression in case of flapping, complete the following tasks:

  • Configure link layer protocol parameters and IPv4 addresses for interfaces and ensure that the link layer protocol of the interfaces is Up.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run undo route recursive-lookup delay disable

    Route or tunnel iteration suppression in case of flapping is enabled.

    To disable route or tunnel iteration suppression in case of flapping, run the route recursive-lookup delay disable command.

  3. (Optional) Run route recursive-lookup delay start-time start-time increase-time increase-time max-time max-time

    Suppression periods are configured for route or tunnel iteration, including the initial suppression period, incremental suppression period since the second suppression, and the maximum suppression period.

  4. Run commit

    The configuration is committed.

Checking the Configurations

Run the display current-configuration | include route recursive-lookup delay command to check configurations.

# Display suppression periods configured for route or tunnel iteration.

<HUAWEI> display current-configuration | include route recursive-lookup delay
route recursive-lookup delay start-time 600 increase-time 2000 max-time 6000
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Updated: 2019-01-04

Document ID: EDOC1100059437

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