Chapter 25
| IP Interface Commands
IPv6 Interface
– 567 –
Default Setting
3
Command Mode
Interface Configuration (VLAN)
Command Usage
◆
Configuring a value of 0 disables duplicate address detection.
◆
Duplicate address detection determines if a new unicast IPv6 address already
exists on the network before it is assigned to an interface.
◆
Duplicate address detection is stopped on any interface that has been
suspended (see the
vlan
command). While an interface is suspended, all unicast
IPv6 addresses assigned to that interface are placed in a “pending” state.
Duplicate address detection is automatically restarted when the interface is
administratively re-activated.
◆
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.
Example
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 stalled.
Link-local address:
FE80::200:E8FF:FE90:0/64 [TENTATIVE]
Global unicast address(es):
2009:DB9:2229::79, subnet is 2009:DB9:2229:0::/64 [TENTATIVE]
Joined group address(es):
FF01::1/16
FF02::1/16
Содержание EX-3524
Страница 2: ......
Страница 28: ...Figures 28 ...
Страница 34: ...Section I Getting Started 34 ...
Страница 58: ...Chapter 1 Initial Switch Configuration Setting the System Clock 58 ...
Страница 72: ...Chapter 2 Using the Command Line Interface CLI Command Groups 72 ...
Страница 156: ...Chapter 5 SNMP Commands Notification Log Commands 156 ...
Страница 164: ...Chapter 6 Remote Monitoring Commands 164 ...
Страница 218: ...Chapter 7 Authentication Commands Management IP Filter 218 ...
Страница 268: ...Chapter 8 General Security Measures Port based Traffic Segmentation 268 ...
Страница 292: ...Chapter 9 Access Control Lists ACL Information 292 ...
Страница 312: ...Chapter 10 Interface Commands Power Savings 312 ...
Страница 324: ...Chapter 11 Link Aggregation Commands Trunk Status Display Commands 324 ...
Страница 366: ...Chapter 15 Address Table Commands 366 ...
Страница 428: ...Chapter 17 VLAN Commands Configuring Voice VLANs 428 ...
Страница 572: ...Chapter 25 IP Interface Commands IPv6 Interface 572 ...
Страница 578: ...Section I Appendices 578 ...
Страница 594: ...Appendix C Customer Support Manuals 594 ...