Specifications

4-16
Cisco Unified IP Phone 7906G and 7911G for Cisco Unified Communications Manager 8.0
OL-21033-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Network Configuration Menu
Understanding DHCPv6 and Autoconfiguration
You can choose to configure the IP address and other network settings, such as the TFTP server, DNS
server, domain, name, and so forth. on an IP phone manually or by using a router and/or a DHCP server
to automatically assign the IP address and other network information. For more information on how the
Auto IP Configuration and DHCPv6 settings determine where the IP Phone acquires its IPv6 address and
other network settings, see Table 4-5.
IPv6 TFTP Server 2
(for SCCP phones
only)
(Optional) The backup IPv6 TFTP server that the
phone uses if the primary IPv6 TFTP server is
unavailable.
Note Before making changes to the Alternate
TFTP or IPv6 TFTP servers, you must first
unlock the CTL or ITL file on the phone.
When the phone looks for its TFTP server, it gives
precedence to manually assigned TFTP servers,
regardless of the protocol. If your configuration
includes both IPv6 and IPv4 TFTP servers, the
phone prioritizes the order that it looks for its
TFTP server by giving priority to manually
assigned IPv6 TFTP servers and IPv4 TFTP
servers. The phone looks for its TFTP server in the
following order:
1. Manually assigned IPv6 TFTP Servers
2. Manually assigned IPv4 TFTP Servers
3. DHCPv6 assigned TFTP Servers
4. DHCP assigned TFTP Servers
For information about the CTL or ITL file, refer to
Cisco Unified Communications Manager Security
Guide. For information about unlocking the CTL
or ITL file, see Unlocking the CTL and ITL files,
page 4-35.
1. Unlock the CTL or ITL file if necessary. If
both the CTL and ITL files exist, unlock either
of the files.
2. Unlock network configuration options.
3. Enter an IP address for the IPv6 TFTP Server
1 option.
4. Scroll to the IPv6 TFTP Server 2 option, press
the Edit softkey, and then enter a new backup
TFTP server IP address.
5. Press the Valid a te softkey, and then press the
Save softkey.
Table 4-4 IPv6 Configuration Menu Options (continued)
Option Description To Change
Table 4-5 Determining How a Phone Acquires its Network Settings
DHCPv6
Allow
AutoConfiguration
for Phones How the Phone Acquires its IP address and Network Settings
Disabled Disabled You must manually configure an IP address and other network settings.
Note When DHCPv6 is disabled, the Auto IP Configuration setting is ignored.
Disabled Enabled You must manually configure an IP address and the other network settings.
Note When DHCPv6 is disabled, the Auto IP Configuration setting is ignored.