SMC Networks TigerStack II SMC8848M Management Manual page 107

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- A global unicast address can be configured by specifying the
network prefix and the length of the prefix (in the IPv6 Address and
Prefix Length fields), and then selecting the Address Type
"EUI-64" to automatically create the host portion of the address in
the low order 64 bits based on the modified EUI-64 interface
identifier.
- A global unicast address can be manually configured by specifying
the full address and network prefix length (in the IP Address and
Prefix Length fields), and selecting the Address Type "Global."
- A global unicast address can also be set by selecting a preconfigured
general prefix for the network portion of the address from the
Based on General Prefix scroll-down list and marking the check box
next to this field to enable your choice (see "Configuring an IPv6
General Network Prefix" on page 4-22), and then specifying the
address (in the IPv6 Address field) and the full network prefix
length which includes the general prefix and any contiguous bits
from the left of the address that are appended to the network prefix
(in the Prefix Length field).
• Prefix Length – A decimal value indicating how many contiguous
bits (from the left) of the address comprise the prefix (i.e., the network
portion of the address).
When used with a general network prefix to configure a global unicast
address, this length includes both that specified by the general prefix
and any contiguous prefix bits (from the left of the specified address)
that exceed the length of the general prefix. If the prefix length
specified by this parameter is shorter than the general prefix, then the
length of the general prefix takes precedence.
• Based on General Prefix – Defines a general prefix for the network
segment of the address (see "Configuring an IPv6 General Network
Prefix" on page 4-22).
When configuring a global unicast address based on a general network
prefix, the Prefix Length includes both that specified by the general
prefix and any number of subsequent prefix bits that exceed the
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ETTING THE WITCH
' IP A (IP V
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ERSION
4-17