How do I access these switches via SSH if I'm using IPv6? Please give me your configuration as an example.

This is my SSH configuration for, let's say, switch 3 (s3).
hostname switch3
username admin secret password
enable secret password
ipv6 unicast-routing
ip domain-name cisco.com
crypto key generate rsa modulus 1024
ip ssh version 2
line console 0
password cisco
login local
exec-timeout 15 0
line vty 0 15
exec-timeout 15 0
password cisco
login local
transport input ssh
interface vlan 10
ipv6 address 2001:13:10::15/64
spanning-tree mode rapid-pvst
HOWEVER, when I start Putty, and type in 2001:13:10::15, nothing happens. No connection, nothing at all. Why? Please help me
edit: please assume I have full connectivity with all interfaces on the routers, switches, PCs etc.