Difference between revisions of "Link-Local IPv6 Address"
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Revision as of 09:37, 12 June 2011
Link-Local
| IPv6 Address Type: | Link-Local |
| Prefix: | fe80::/10 |
| Local Routeable: | No |
| Global Routeable: | No |
| Global Unique: | No |
| Example: | FE80::21B:D4FF:FE0F:8CA2 |
| IPv4 Equivalent: | 169.254.0.0/16 Link-Local |
Explanation
These addresses are used on a single link or a non-routed common access network, such as an Ethernet LAN.
They do not need to be unique outside of that link.
Link-local addresses may appear as the source or destination of an IPv6 packet.
Routers must not forward IPv6 packets if the source or destination contains a link-local address.
IPv6 Link-Local Addresses
Link-Local Addresses are used by Nodes to communicate to other Nodes on the same Link. Link-Local addresses are not Routeable.
IPv6#<input>sh ipv6 int fa0/0</input>
FastEthernet0/0 is up, line protocol is up
IPv6 is enabled, <notice>link-local address is FE80::21B:D4FF:FE0F:8CA2</notice>
No Virtual link-local address(es):
Description: Outside: Internet connection to ISP
Global unicast address(es):
2001:16D8:DD85:146::2, subnet is 2001:16D8:DD85:146::/64
Joined group address(es):
FF02::1
FF02::2
FF02::D
FF02::16
FF02::1:FF00:2
FF02::1:FF0F:8CA2
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
Hosts use stateless autoconfig for addresses.