S
ETTING
THE
S
WITCH
’
S
IP A
DDRESS
(IP V
ERSION
6)
4-19
converted into EUI-64 format by inverting the universal/local bit
in the address and inserting the hexadecimal number FFFE
between the upper and lower three bytes of the MAC address.
For example, if a device had an EUI-48 address of
28-9F-18-1C-82-35, the global/local bit must first be inverted to
meet EUI-64 requirements (i.e., 1 for globally defined addresses
and 0 for locally defined addresses), changing 28 to 2A. Then the
two bytes FFFE are inserted between the OUI (i.e.,
organizationally unique identifier, or company identifier) and the
rest of the address, resulting in a modified EUI-64 interface
identifier of 2A-9F-18-FF-FE-1C-82-35.
- This host addressing method allows the same interface identifier
to be used on multiple IP interfaces of a single device, as long as
those interfaces are attached to different subnets.
• Global – Configures an IPv6 global unicast address based on values
entered in the IPv6 Address and Prefix Length fields.
• Auto Detect – System will automatically detect the address type
according to the address/prefix entered in the IPv6 Address field.
Current Address Table
• IPv6 Address – IPv6 address assigned to this interface.
In addition to the unicast addresses assigned to an interface, a node is
required to join the all-nodes multicast addresses FF01::1 and FF02::1
for all IPv6 nodes within scope 1 (interface-local) and scope 2
(link-local), respectively.
FF01::1/16 is the transient node-local multicast address for all attached
IPv6 nodes, and FF02::1/16 is the link-local multicast address for all
attached IPv6 nodes. The node-local multicast address is only used for
loopback transmission of multicast traffic. Link-local multicast addresses
cover the same types as used by link-local unicast addresses, including all
nodes (FF02::1), all routers (FF02::2), and solicited nodes
(FF02::1:FFXX:XXXX) as described below.
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