Chapter 26
| IP Interface Commands
Interface Address Configuration and Utilities
– 661 –
globally defined addresses and 0 for locally defined addresses), changing 28 to
2A. Then the two bytes FFFE are inserted between the OUI (i.e., company id)
and the rest of the address, resulting in a modified EUI-64 interface identifier of
2A-9F-18-FF-FE-1C-82-35.
◆ This host addressing method allows the same interface identifier to be used on
multiple IP interfaces of a single device, as long as those interfaces are attached
to different subnets.
Example
This example uses the network prefix of 2001:0DB8:0:1::/64, and specifies that the
EUI-64 interface identifier be used in the lower 64 bits of the address.
Console(config)#interface vlan 1
Console(config-if)#ipv6 address 2001:0DB8:0:1::/64 eui-64
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled
Link-Local Address:
FE80::B60E:DCFF:FE34:E63C/64
Global Unicast Address(es):
2001:DB8::1:B60E:DCFF:FE34:E63C/64, subnet is 2001:DB8:0:1::/64[EUI]
2001:DB8:2222:7272::72/96, subnet is 2001:DB8:2222:7272::/96
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 autoconfig (658)
show ipv6 interface (665)
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