How do you statically configure IPv6 GUA and LLA on a Cisco router?

GUA: ipv6 address 2001:db8:acad:1::1/64 on the interface. LLA: ipv6 address fe80::1 link-local. Then no shutdown.

Static IPv6 Address Configuration:

Configure GUA on an interface:

Router(config)# interface gigabitethernet 0/0/0
Router(config-if)# ipv6 address 2001:db8:acad:1::1/64
Router(config-if)# no shutdown

Configure LLA on an interface:

Router(config-if)# ipv6 address fe80::1 link-local

Key commands:

Why configure LLA manually?

• Makes LLA easier to remember (fe80::1)
• Consistent across all router interfaces
• Easier for documentation and troubleshooting

Verification:

Router# show ipv6 interface brief
Router# show ipv6 interface gigabitethernet 0/0/0

Go deeper:

• How to enable IPv6 on a Cisco router (Study CCNA) — ipv6 unicast-routing, the interface ipv6 address command and show ipv6 interface verification, with worked output.