| Configuring Network Settings | 65Procedure1. Do one of the following:• On your web user interface, go to Network > LAN Configuration > IPv4 Config/IPv6 Config.• On your VCS:On your VC880/VC800/VC500/PVT980/PVT950, go to More > Setting > Advanced > WiredNetwork > IPv4/IPv6.On your VC200, go to More > Network > Wired Network > IPv4/IPv6.On your VP59, go to Setting > Advanced > Wired Network > IPv4/IPv6.• On your CTP20, tap Setting > Advanced > Network > Wired Network > IPv4/IPv6.2. Configure and save the following settings:Parameter Description Configuration MethodStatic DNS Enable or disable DNS feature.Default: Off.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Primary DNS Configure the primary DNSserver assigned to the system.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Secondary DNS Configure the secondary DNSserver assigned to the system.If you change this parameter, thesystem will reboot to make thechange take effect.Web user interfaceEndpointCTP20Related informationConfiguring IPv4 or IPv6DHCP OptionsThe DHCP information with labels carries with the corresponding network and other control information.The information is called option. After connected to the network, the device will broadcast the DISCOVERrequest which carries the DHCP options of the network information. The DHCP server will replay thecorresponding option after receiving the request.Note:For more information on DHCP options, refer to RFC 2131 or RFC 2132.• Supported DHCP Option of IPv4• DHCP Option 42, Option 2• DHCP Option 12Supported DHCP Option of IPv4The following table lists the DHCP options supported by Yealink VCS in IPv4 network.
