Xiamen Caimore Communication Technology Co. Ltd. CM520-8AF Manuale Utente
Xiamen Caimore Communication Technology Co.,Ltd
2 F, 37#, Wanghai Road, Software Park 2, Xiamen,China (361009)
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Tel:+86 592 5901215 web:www.caimore.com/emain.asp
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4.1.5 DHCPD Configuration
DHCP is Dynamic Host Control Protocol. It can assign IP address to computers in the
LAN automatically. For customers, it is not easy to set TCP/IP protocol parameters to
all LAN computers. There are IP address, subnet mask, gateway, DNS server and so
on. Problems can be solved easily by using DHCP. The system default is open. If
customer doesn’t use DHCPD service, please close this selection.
DHCP is Dynamic Host Control Protocol. It can assign IP address to computers in the
LAN automatically. For customers, it is not easy to set TCP/IP protocol parameters to
all LAN computers. There are IP address, subnet mask, gateway, DNS server and so
on. Problems can be solved easily by using DHCP. The system default is open. If
customer doesn’t use DHCPD service, please close this selection.
Picture 4-1-10
Start IP, End IP: they are start and end address when DHCP server assigns IP
automatically. After setting IP address internal computer received from this
gateway is between these two addresses.
gateway is between these two addresses.
Notice:
1. DHCP start IP to end IP are must continuous, and in the same subnet with gateway,
also can’t include gateway local IP, otherwise, DHCP server can’t work normally.
2. Lapped DHCP servers can’t be existed in the same LAN. If there are multi devices
2. Lapped DHCP servers can’t be existed in the same LAN. If there are multi devices
supply DHCP server function in the same LAN, it can cause IP address can’t assign
normally in the system. It needs to stop one DHCP server.
3. If use PPPOE, please don’t use “local interface 1” DHCPD.
4.1.6 Dynamic Domain Name Server (DDNS) Configuration
DDNS is to set dynamic IP obtained by gateway when dialing up to a certain
domain name to bind the continuous IP obtained by wireless dial-up with the certain
domain name.
domain name.
If wireless gateway opens DDNS, after wireless gateway obtaining a new IP by
dialing up successfully every time, it will send new obtained dynamic IP address to
customer dynamic domain name server to realize binding updating between the
settled domain name of dynamic domain name server and gateway IP address.
customer dynamic domain name server to realize binding updating between the
settled domain name of dynamic domain name server and gateway IP address.
Use DDNS function can solve the short-coming that gateway new obtained
different IP address of every dial-up can’t be used as server. If customer needs to use
wireless gateway as server, and communicate with equipment on customer side (
wireless gateway as server, and communicate with equipment on customer side (
such