Configuring IPv6 Prefix List

Use IPv6 prefix lists to allow or deny specific route updates. A prefix list policy specifies route prefixes to match. When there is a match, the route is used.

Before you begin

  • Change the VRF instance as required to configure a prefix list on a specific VRF instance.

Procedure

  1. In the navigation pane, open the following folders: Configuration > IPv6.
  2. Click Policy.
  3. In the Ipv6-Prefix List tab, click Insert.
  4. Edit the parameters as required.
  5. Click Insert.

Ipv6–Prefix list field descriptions

Use the data in the following table to use the Ipv6–Prefix List tab.

Name

Description

Id

Specifies the list identifier. The range is 1 to 2147483647.

Prefix

Specifies the prefix IPv6 address.

PrefixMaskLen

Specifies the length of the prefix mask. You must enter the full 128-bit mask to exact a full match of a specific IPv6 address (for example, when creating a policy to match the next-hop).

Name

Names a specified prefix list during the creation process or renames the specified prefix list. The name can be from 1 to 64 characters in length.

MaskLenFrom

Specifies the lower bound on the mask length. The default is the mask length. Lower bound and higher bound mask lengths together can define a range of networks.

MaskLenUpto

Specifies the higher bound mask length. The default is the mask length. Lower bound and higher bound mask lengths together can define a range of networks.