Chapter 26
| IP Interface Commands
Interface Address Configuration and Utilities
– 659 –
address in modified EUI-64 format. It will also generate a global unicast address
if a global prefix is included in received router advertisements.
◆ If a duplicate address is detected, a warning message is sent to the console.
◆ When DHCPv6 is restarted, the switch may attempt to acquire an IP address
prefix through stateful address autoconfiguration. If the router advertisements
have the “other stateful configuration” flag set, the switch may also attempt to
acquire other non-address configuration information (such as a default
gateway) when DHCPv6 is restarted.
Example
This example assigns a dynamic global unicast address to the switch.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address autoconfig
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is stale, AUTOCONFIG is enabled
Link-Local Address:
FE80::B60E:DCFF:FE34:E63C/64
Global Unicast Address(es):
2001:DB8:2222:7272:2E0:CFF:FE00:FD/64, subnet is 2001:DB8:2222:7272::/
64[AUTOCONFIG]
valid lifetime 2591628 preferred lifetime 604428
Joined Group Address(es):
FF02::1:FF00:72
FF02::1:FF34:E63C
FF02::1
IPv6 link MTU is 1500 bytes
ND DAD is enabled, number of DAD attempts: 3
ND retransmit interval is 1000 milliseconds
ND reachable time is 30000 milliseconds
Console#
Related Commands
ipv6 address (657)
show ipv6 interface (665)
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