| | IPv6 Addressing |
| | Link-Local Unicast Address |
| | |
MAC Address | IPv6 I/F Identifier | Full Link-Local Unicast | |
| | Address | |
00-15-60-7a-ad-c0 | 215:60ff:fe7a:adc0 | fe80::215:60ff:fe7a:adc0/64 | |
09-c1-8a-44-b4-9d | 11c1:8aff:fe44:b49d | fe80::11c1:8aff:fe44:b49d/64 |
00-1a-73-5a-7e-57 | 21a:73ff:fe5a:7e57 | fe80::21a:73ff:fe5a:7e57/64 |
| | | |
| The EUI method of generating a link-local address is automatically imple |
| mented on the switches covered by this guide when IPv6 is enabled on a VLAN |
| interface. |
| If automatically generated link-local addresses are not suitable for the |
| addressing scheme you want to use, statically assigned link-local addresses |
| can be used instead. (Refer to “Static Address Configuration” on page 3-9.) |
| For related information, refer to: |
| ■ RFC 2373: “IP Version 6 Addressing Architecture” |
| ■ RFC 2464: “Transmission of IPv6 Packets Over Ethernet Networks” |
| |
N o t e | While only one link-local IPv6 address is allowed on an interface, multiples of |
| other address types can exist on the same interface. Thus, an interface can |
| have one link-local unicast address, but multiple global unicast, anycast, and |
| unique local addresses. |
| |
Statically Configuring Link-Local Addresses
A link-local unicast address can be configured statically on a VLAN interface. If IPv6 is not already enabled on the VLAN, this action also enables IPv6 on the VLAN. Only one link-local address can exist on a VLAN at any time. If a link-local address (static or autoconfigured) already exists on the VLAN, then statically configuring a new one replaces the previously existing one. To statically configure a link-local address, refer to “Statically Configuring a Link- Local Unicast Address ” on page 4-12.