Table 13: IPv6 Configuration menu options
To change
Description
Option
Set DHCPv6 Field, on page 81
Indicates whether the phone has DHCP enabled
or disabled.
When DHCPv6 is enabled, the DHCPv6 server
assigns the phone an IPv6 address. When DHCP
v6 is disabled, the administrator must manually
assign an IPv6 address to the phone.
The DHCPv6 setting along with the Auto IP
Configuration setting determine how the IP
phone obtains its network settings. For more
information on how these two settings affect
the network settings on the phone, see
DHCPv6
and Autoconfiguration, on page 84
.
DHCPv6
Set IPv6 Address Field, on page 81
Internet Protocol version 6 (IPv6) address of
the phone. The IPv6 address is a 128 bit
address.
If you assign an IP address with this option, you
must also assign the IPv6 prefix length and
default router. See IPv6 Prefix Length in this
table.
IPv6 Address
Set IPv6 Prefix Length Field, on page
82
Subnet prefix length that is used by the phone.
The subnet prefix length is a decimal value from
1 to 128, that specifies the portion of the IPv6
address that comprises the subnet.
IPv6 Prefix Length
Set IPv6 Default Router 1 Field, on
page 82
Default router used by the phone (Default
Router 1).
The phone obtains information on the
default router from IPv6 Router
Advertisements.
Note
IPv6 Default Router
1
Set IPv6 DNS Server 1 and IPv6 DNS
Server 2 Fields, on page 82
Primary Domain Name System (DNS) server
(DNS Server 1) and optional backup DNS
servers (DNS Server 2) used by the phone.
If your configuration includes both DNSv6 and
DNSv4 servers, the phone will look for its DNS
server in the following order:
1
IPv6 DNS Server 1
2
IPv6 DNS Server 2
3
DNS Server 1-5 for IPv4 (respectively)
IPv6 DNS Server 1
IPv6 DNS Server 2
Cisco Unified IP Phone 7975G, 7971G-GE, 7970G, 7965G, and 7945G Administration Guide for Cisco Unified
Communications Manager 9.0 (SCCP and SIP)
73
Cisco Unified IP Phone Settings
Network Configuration Menu