Edge-Core ES3528MV2, Management Manual

Page: 1425 / 1480

C
HAPTER
45
| IP Interface Commands
IPv6 Interface
– 1425 –
◆
An interface that is re-activated restarts duplicate address detection for
all unicast IPv6 addresses on the interface. While duplicate address
detection is performed on the interface’s link-local address, the other
IPv6 addresses remain in a “tentative” state. If no duplicate link-local
address is found, duplicate address detection is started for the
remaining IPv6 addresses.
◆
If a duplicate address is detected, it is set to “duplicate” state, and a
warning message is sent to the console. If a duplicate link-local address
is detected, IPv6 processes are disabled on the interface. If a duplicate
global unicast address is detected, it is not used. All configuration
commands associated with a duplicate address remain configured while
the address is in “duplicate” state.
◆ If the link-local address for an interface is changed, duplicate address
detection is performed on the new link-local address, but not for any of
the IPv6 global unicast addresses already associated with the interface.
E
XAMPLE
The following configures five neighbor solicitation attempts for addresses
configured on VLAN 1. The show ipv6 interface command indicates that the
duplicate address detection process is still on-going.
Console(config)#interface vlan 1
Console(config-if)#ipv6 nd dad attempts 5
Console(config-if)#end
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled
Link-local address:
FE80::200:E8FF:FE90:0/64
Global unicast address(es):
2009:DB9:2229::79, subnet is 2009:DB9:2229:0::/64
Joined group address(es):
FF01::1/16
FF02::1/16
FF02::1:FF00:79/104
FF02::1:FF90:0/104
IPv6 link MTU is 1500 bytes.
ND DAD is enabled, number of DAD attempts: 5.
ND retransmit interval is 1000 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
Console#
R
ELATED
C
OMMANDS
ipv6 nd ns-interval (1426)
show ipv6 neighbors (1429)