Cisco 7800 Series Administration Manual page 65

Cisco IP Phone Installation
Table 17: IPv6 Setup Menu Options
Entry
DHCPv6 Enabled
IPv6 Address
IPv6 Prefix Length
Type
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
Default value
Yes
::
0
IPv6 Fields
Description
Indicates the method that the
phone uses to get the IPv6-only
address.
When DHCPv6 is enabled, the
phone gets the IPv6 address
either from DHCPv6 server or
from SLAAC by RA sent by the
IPv6-enabled router. And if
DHCPv6 is disabled, the phone
will not have any stateful (from
DHCPv6 server) or stateless
(from SLAAC) IPv6 address.
Displays the current IPv6-only
address of the phone or allows
the user to enter a new IPv6
address.
A valid IPv6 address is 128 bits
in length, including the subnet
prefix. Two address formats are
supported:
• Eight sets of hexadecimal
digits separated by colons
X:X:X:X:X:X:X:X
• Compressed format to
collapse a single run of
consecutive zero groups
into a single group
represented by a double
colon.
If the IP address is assigned with
this option, you must also assign
the IPv6 prefix length and the
default router.
Displays the current prefix
length for the subnet or allows
the user to enter a new prefix
length.
The subnet prefix length is a
decimal value from 1 to 128.
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