Enabling IPv6 on Cat3560

Default SDM template in Cat3560

Switch#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: 0.5K

number of IPv4/MAC security aces: 1K

As shown in SDM template output, it supports only IPv4, to use IPv6 I need to change the SDM template to dual IPv4-IPv6.

Dual ipv4-to-ipv6 options

Switch(config)#sdm prefer dual-ipv4-and-ipv6 ?

default Default bias

routing Unicast bias

vlan VLAN bias

Default – Default template to balance system resources

routing – Routing template to support ipv4 and ipv6 routing including ipv4 policy-based routing

vlan – maximize vlan configuration template with no routing supported on hardware.

My choice

Switch(config)#sdm prefer dual-ipv4-and-ipv6 routing

Switch needs a reboot to make changes to take effect.

Verify the SDM template

Switch#sh sdm prefer

The current template is “desktop IPv4 and IPv6 routing” 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: 1.5K

number of IPv4 IGMP groups + multicast routes: 1K

number of IPv4 unicast routes: 2.75K

number of directly-connected IPv4 hosts: 1.5K

number of indirect IPv4 routes: 1.25K

number of IPv6 multicast groups: 1.125k

number of directly-connected IPv6 addresses: 1.5K

number of indirect IPv6 unicast routes: 1.25K

number of IPv4 policy based routing aces: 0.25K

number of IPv4/MAC qos aces: 0.5K

number of IPv4/MAC security aces: 0.5K

number of IPv6 policy based routing aces: 0.25K

number of IPv6 qos aces: 0.5K

number of IPv6 security aces: 0.5K

Now there will be ipv6 related commands available to use, for example:

Switch(config)#ipv6 unicast-routing

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