Example: Configuring Shared IPv6 Interfaces

This example explains how to create a shared IPv6 interface over a layer 2 logical interface.

Requirements

This example uses the following software and hardware components:

Overview

You can create multiple shared IPv6 interfaces over the same layer 2 logical interface—for example, atm 5/3.101—enabling more than one IPv6 interface to share the same logical resources.

Creating a Shared IPv6 Interface over a Layer 2 Logical Interface

To share IPv6 interfaces:

  1. Create a layer 2 interface.
    host1(config)#interface atm 5/3 host1(config-if)#interface atm 5/3.101
  2. (Optional) Create a primary IPv6 interface.
    host1(config-if)#ipv6 address 1::1/64 host1(config-if)#exit
  3. Create the shared IPv6 interface.
    host1(config)#interface ipv6 si0
  4. Associate the shared IPv6 interface with the layer 2 interface by the following method:
    host1(config-if)#ipv6 share-interface atm 5/3.101
  5. To fully configure the shared interface, assign an address (or make the interface unnumbered).
    host1(config-if)#ipv6 address 1::1/64

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