ZyXEL Communications P-2302HW What is BOOTP/DHCP?, What is DDNS?, Prestige 2302 Support Notes

Models: P-2302HW

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What is BOOTP/DHCP?

Prestige 2302 Support Notes

What is BOOTP/DHCP?

BOOTP (Bootstrap Protocol) and DHCP (Dynamic Host Configuration Protocol) are mechanisms to dynamically assign an IP address to a TCP/IP client from the server. In this case, the Prestige Internet Access Sharing Router is a BOOTP/DHCP server. Windows clients use DHCP to request an internal IP address, while WFW and WinSock clients use BOOTP. TCP/IP clients may specify their own IPs or use BOOTP/DHCP to request an IP address.

What is DDNS?

The Dynamic DNS service allows you to map a dynamic IP address to a static hostname, allowing your computer to be more easily assessable from various locations on the Internet. To use the service, you must first apply an account from one of the several free DDNS service providers such as WWW.DYNDNS.ORG.

Without DDNS, you have to tell your users the WAN IP address of your server for them to access. It is inconvenient for the users if this IP is dynamic which changes. With DDNS supported on the Prestige, you use a DNS name (e.g., www.zyxel.com.tw) supplied by the DDNS service provider to your server (e.g., Web server). Outside users can always access the web server at www.zyxel.com.tw regardless of whether the WAN IP on the Prestige is dynamic or static.

When the ISP assigns the Prestige a new IP address, the Prestige updates this IP address to the DDNS server so that the server can update its IP-to-DNS entry. Once the IP-to-DNS table in the DDNS server is updated, the DNS name for your web server (i.e., www.zyxel.com.tw) is still easily accessible.

When do I need the DDNS service?

When you want your internal server to be accessible by using DNS name rather than using a dynamic IP address, use the DDNS service. The DDNS server maps a dynamic IP address to a static hostname. Whenever the ISP assigns you a new IP address, the Prestige sends this IP address to the DDNS server to update its IP-DNS table.

What DDNS servers does the Prestige support?

Currently, the Prestige supports WWW.DYNDNS.ORG for DDNS service. This is the web site to which you apply the DNS and update the Prestige WAN IP.

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All contents copyright (c) 2005 ZyXEL Communications Corporation.

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ZyXEL Communications P-2302HW manual What is BOOTP/DHCP?, What is DDNS?, When do I need the DDNS service?