You can enable/disable the DHCP relay agent and specify the relay destination DHCP server.IP-PT KX-NS1000Built- inRouterSwitchingHubDHCP RelayAgentDHCP Discover(Broadcast)DHCP Offer(Broadcast) INTERNETDHCP Discover(Unicast) DHCPServerDHCP Offer(Unicast)LANConditions• This PBX supports RFC 1542 (Clarifications and Extensions for the Bootstrap Protocol).• To enable sending multicast packets on the WAN side, the DHCP relay agent feature can be used onlywhen the built-in router feature is enabled.• When the built-in router feature is enabled, the PBX must act as the network gateway for the LAN.Therefore, the default gateway address that the DHCP server distributes is changed to the IP address ofthe PBX’s LAN port.• This feature cannot be configured if the method for acquiring IP addresses on the LAN side is DHCP mode.PC Programming Manual References28.2.1 Network Service—[2-1] Server Feature—DHCP8.6.4 Dynamic DNSDescriptionIf the PBX’s WAN-side IP address is assigned dynamically, the PBX can notify the DNS server of its currentIP address. Since the PBX updates its DNS record each time it connects to the network, other devices canalways connect to the PBX using the same hostname, even if the PBX’s WAN-side IP address changes eachtime the PBX reconnects to the network.You can enable/disable the Dynamic DNS feature and specify the dynamic DNS server.Conditions• The Dynamic DNS feature differs from the dynamic DNS defined in RFC 2136. It uses HTTP to update theDNS record. The update method differs depending on the DNS server operator. Although some operatorsmay support FTP or e-mail for updating the DNS record, this PBX only supports HTTP.• The KX-NS1000 supports only type A records.• For details about what values to use for the DNS server settings, consult the network administrator.Document Version 2016-03 Installation Manual 3558.6.4 Dynamic DNS
