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Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.6 (SCCP and SIP)
OL-23091-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phones
Network Configuration Menu
IPv6 DNS Server 1
IPv6 DNS Server 2
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)
1. Unlock network configuration
options.
2. Set the DHCPv6 option to No.
3. Scroll to the appropriate DNS
Server option, press the Edit
softkey, and then enter a new
DNS server IP address.
4. Press the Validate softkey.
5. Repeat Steps 3 and 4 as needed to
assign the backup DNS server.
6. Press the Save softkey.
DHCPv6 Address
Released
Releases the IPv6 address that the phone has acquired
from the DHCPv6 server or by stateless address
autoconfiguration.
Note This field is only editable when the DHCPv6
option is enabled.
1. Unlock network configuration
options.
2. Scroll to the DHCPv6 Address
Released option and press the
Yes softkey to release the IP
address assigned by DHCP, or
press the No softkey if you do not
want to release this IP address.
3. Press the Save softkey.
IPv6 Alternate TFTP Indicates whether the phone is using the IPv6 Alternate
TFTP server.
1. Unlock network configuration
options.
2. Scroll to the IPv6 Alternate TFTP
option and press the Yes softkey
if the phone should use an
alternative TFTP server.
3. Press the Save softkey.
Table 4-4 IPv6 Configuration Menu Options (continued)
Option Description To Change