Dhcp Option For Ipv4; Supported Dhcp Option For Ipv4; Dhcp Option 66, Option 43 And Custom Option Dhcp Option 42 And Option - Yealink T5 Series Administrator's Manual

Administrator's Guide for SIP-T58V/T58A/T56A/CP960 IP Phones
It configures the secondary IPv6 DNS server.
Description
Note: It works only if "static.network.ip_address_mode" is set to 1 (IPv6) or 2 (IPv4 & IPv6). In DHCP envir-
onment, you also need to make sure "static.network.ipv6_static_dns_enable" is set to 1 (On).
Permitted
IPv6 Address
Values
Default Blank
Web UI Network->Basic->IPv6 Config->Static IPv6 DNS->Secondary DNS
Settings->Advanced Settings (default password: admin) ->Network->WAN Port->IPv6->Type (Static IP) -
>Secondary DNS
Phone UI
Or Settings->Advanced Settings (default password: admin) ->Network->WAN Port->IPv6->Type (DHCP)
->Static DNS (Enabled) ->Secondary DNS
Parameter static.network.ipv6_icmp_v6.enable
It enables or disables the phone to obtain IPv6 network settings via SLAAC (Stateless Address Auto-
configuration).
Description
Note: It works only if "static.network.ipv6_internet_port.type" is set to 0 (DHCP).
Permitted 0-Disabled
Values 1-Enabled
Default 1
Web UI Network->Advanced->ICMPv6 Status->Active
[1]
If you change this parameter, the phone will reboot to make the change take effect.

DHCP Option for IPv4

The IP phone can obtain IPv4-related parameters in an IPv4 network via DHCP option.
Note
For more information on DHCP options, refer to
Topics

Supported DHCP Option for IPv4

DHCP Option 66, Option 43 and Custom Option
DHCP Option 42 and Option 2
DHCP Option 12
DHCP Option 60
Supported DHCP Option for IPv4
The following table lists common DHCP options for IPv4 supported by Yealink phones.
Parameters
Subnet Mask
Time Offset
26
[1]
RFC 2131
DHCP
Option
1 Specify the client's subnet mask.
Specify the offset of the client's subnet in seconds from Coordinated Universal
2
Time (UTC).
<y0000000000xx>.cfg
or RFC 2132.
Description