Disable IP Source Guard (IPSG) on a port to allow traffic from all IPv6 addresses to go through the port without being filtered.
enable
configure terminal
interface GigabitEthernet {slot/port[/sub-port][-slot/port[/sub-port]][,...]}
Note
If the platform supports channelization and the port is channelized, you must also specify the sub-port in the format slot/port/sub-port.
no ipv6 source-guard enable
show ipv6 source-guard interface gigabitEthernet [{slot/port[/sub-port] [-slot/port[/sub-port]] [,...]}]
Disable IPSG on port 1/1.
Switch:1>enable Switch:1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch:1(config)#interface gigabitEthernet 1/1 Switch:1(config-if)no ipv6 source-guard enable
Verify the configuration.
Switch:1(config-if)#show ipv6 source-guard interface gigabitEthernet 1/1 Slot/Port Source Guard Number of IPv6 Address Mode address allowed overflow count ========================================================== 1/1 Disabled 10 0