Difference between revisions of "Link-Local IPv6 Address"
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Link-Local Addresses are used by Nodes to communicate to other Nodes on the same Link. Link-Local addresses are ''not'' Routeable. | Link-Local Addresses are used by Nodes to communicate to other Nodes on the same Link. Link-Local addresses are ''not'' Routeable. | ||
[[Image:Link-Local IPv6 address.png|500px|float|thumb|Format of Link-Local address]] | [[Image:Link-Local IPv6 address.png|500px|float|thumb|Format of Link-Local address]] | ||
| + | <source lang=cli> | ||
| + | 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. | ||
| + | </source> | ||
| + | {{Source cli}} | ||
Revision as of 09:08, 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.