This is an old revision of the document!
Cisco related stuff and IPv6
Cisco IPv6 routing
Attempting our ping again from R1 elicits the following output from the debug on R2:
*Mar 1 00:14:14.575: IPV6: source 2001:DB8:0:12::1 (FastEthernet0/0) *Mar 1 00:14:14.575: dest 2001:DB8:0:23::3 (FastEthernet0/1) *Mar 1 00:14:14.579: traffic class 0, flow 0x0, len 100+14, prot 58, hops 64, not a router? *Mar 1 00:14:16.591: IPV6: source 2001:DB8:0:12::1 (FastEthernet0/0) *Mar 1 00:14:16.591: dest 2001:DB8:0:23::3 (FastEthernet0/1) *Mar 1 00:14:16.591: traffic class 0, flow 0x0, len 100+14, prot 58, hops 64, not a router? ...
“Not a router?” IPv6 routing does not yet come enabled out of the box. The administrator must enable it, which I forgot to do.
R2(config)# ipv6 unicast-routing
ipv6 unicast-routing ipv6 cef
interface FastEthernet0/0 ipv6 enable ipv6 address xx:xx:xx:xx:xx::x/yy
Catalyst enabling IPv6 stack
(config)#sdm prefer dual-ipv4-and-ipv6 default # sh sdm prefer
The current template is "desktop default" template. The selected template optimizes the resources in the switch to support this level of features for 8 routed interfaces and 1024 VLANs. number of unicast mac addresses: 6K number of IPv4 IGMP groups + multicast routes: 1K number of IPv4 unicast routes: 8K number of directly-connected IPv4 hosts: 6K number of indirect IPv4 routes: 2K number of IPv4 policy based routing aces: 0 number of IPv4/MAC qos aces: 512 number of IPv4/MAC security aces: 1K On next reload, template will be "desktop IPv4 and IPv6 default" template.
reload is needed