60 IPv6 Interface Commands

ipv6 address autoconfig

This command enables stateless autoconfiguration of IPv6 addresses on an interface and enables IPv6 on the interface. The network portion of the address is based on prefixes received in IPv6 router advertisement messages; the host portion in based on the modified EUI-64 form of the interface identifier (i.e., the switch’s MAC address). Use the no form to remove the address generated by this command.

Syntax

[no] ipv6 address autoconfig

Default Setting

No IPv6 addresses are defined

Command Mode

Interface Configuration (VLAN)

Command Usage

If a link local address has not yet been assigned to this interface, this command will dynamically generate a global unicast address and a link local address for the interface. (The link-local address is made with an address prefix of FE80 and a host portion based the switch’s MAC address in modified EUI-64 format.)

If a duplicate address is detected, a warning message is sent to the console.

If the router advertisements have the “other stateful configuration” flag set, the switch will attempt to acquire other non-address configuration information (such as a default gateway).

Example

This example assigns two dynamic global unicast address of 2005::212:CFFF:FE0B:4600 and 3FFE:501:FFFF:100:212:CFFF:FE0B:4600 to the switch.

Console(config-if)#ipv6 address autoconfig Console(config-if)#end

Console#show ipv6 interface Vlan 1 is up

IPv6 is enable. Link-local address:

FE80::212:CFFF:FE0B:4600/64 Global unicast address(es):

2005::212:CFFF:FE0B:4600, subnet is 2005:0:0:0::/64 3FFE:501:FFFF:100:212:CFFF:FE0B:4600, subnet is 3FFE:501:FFFF:100::/64

Joined group address(es): FF01::1/16 FF02::1/16 FF02::1:FF0B:4600/104

MTU is 1500 bytes.

ND DAD is enabled, number of DAD attempts: 1. ND retransmit interval is 1000 milliseconds Console#

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Accton Technology ES4524D, ES4548D, 24/48-Port Ipv6 address autoconfig, Syntax No ipv6 address autoconfig Default Setting