Please include your rack number in your correspondence to expedite request.
How To Enable IPv6 Support On SW1, SW2, S3, and SW4
By default, IPv6 is not enabled on Cisco Catalyst 3560 switches. To enabled IPv6 support, use the sdm prefer dual-ipv4-and-ipv6 default command and then reload the switch for changes to take effect. This command reallocates the switches memory to make space for IPv6 addresses. A reload is necessary for the command to take effect.
For full details on how to use this command read this article:
or this article Enable IPv6 on Cisco Catalyst 3560