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Help Center/ Enterprise Router/ User Guide/ Routing Control/ IP Prefix Lists/ Modifying an IP Prefix Rule in an IP Prefix List

Modifying an IP Prefix Rule in an IP Prefix List

Updated on 2024-08-19 GMT+08:00

Scenarios

This section describes how to modify a prefix rule.

Notes and Constraints

IP prefix rules change the path through which network traffic passes. If the route policy of a prefix rule has already been associated with an enterprise router, evaluate the impact on services before modifying the prefix rule.

Procedure

  1. Go to the Prefix Lists page.
  2. Click the name of the target IP prefix list.

    The prefix rule list is displayed.

  3. Locate the row that contains the target prefix rule and click Modify in the Operation column.

    The Modify Prefix Rule dialog box is displayed.

  4. Configure the parameters based on Table 1.

    Table 1 Parameters for modifying a prefix rule

    Parameter

    Description

    Example Value

    Serial Number

    Cannot be modified.

    -

    Action

    Cannot be modified.

    -

    IP Prefix

    Cannot be modified.

    -

    Min. Netmask Length

    The min. netmask length cannot be smaller than the netmask length of the IP prefix. For example, if the netmask length of the IP prefix is 16, the min. netmask length must be greater than or equal to 16 (for example, 18).

    20

    Max. Netmask Length

    The max. netmask length cannot be smaller than the min. netmask length. For example, if the min. netmask length is 18, the max. netmask length must be from 18 to 32 (for example, 20).

    28

  5. Click OK.

    You can view the modified prefix rule.

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