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Web-based Configuration Guide

AR650, AR1600, and AR6100 V300R003

This document describes how to configure and maintain your routers using the web platform.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
DDNS

DDNS

Context

When the enterprise server's IP address changes, the DNS server needs to dynamically update the mapping between its domain name and IP address. Internet users often use domain names to access servers such as HTTP and FTP servers that provide application layer services. When the server IP address changes, the server functions as the DDNS client and sends a DDNS request for updating the mapping between its domain name and IP address to the DDNS server. Other users can still access the server using the domain name when the server IP address changes.

After a DDNS client is configured, the router can notify the DDNS server of the latest public IP address of the server. The DDNS server then updates the mapping between domain name and IP address on the DNS server so that the DNS server can resolve the server's domain name into a correct IP address.

NOTE:
If the public IP address of the enterprise's server does not frequently change, you do not need to configure DDNS.

Figure 13-10 shows the DDNS networking. The enterprise's server accesses the Internet through PPPoE on Dialer1 of the router and provides services using the IP address of Dialer1. The DDNS client is configured on the router. The DDNS client notifies the DDNS server when the public IP address of the server changes, and the DDNS server notifies the DNS server. Therefore, the DNS server maintains the latest mappings between domain names and IP addresses.

Figure 13-10  Typical networking of DDNS

Pre-configuration Tasks

  • You have obtained an account and domain name on the DDNS service provider's website.

  • On the DNS page, you have configured the IP address of the DNS server on the public network.

Procedure

  • Creating a DDNS client
    1. Log in to the web platform and choose IP Service > DNS > DDNS, as shown in Figure 13-10.

      Figure 13-11  DDNS page

    2. Click Create in the DDNS Configuration List area and set DDNS parameters. Table 13-10 describes the parameters.

    3. Click OK.

      Table 13-10  DDNS parameters

      Parameter

      Description

      DDNS policy name

      Name of a DDNS policy.

      Server provider

      Domain name of the DDNS service provider (DDNS server). The options are as follows:
      • User-defined: a user-defined DDNS server.

      • oray: a DDNS server with the domain name as www.oray.cn.

      • dyndns: a DDNS server with the domain name as www.dyndns.org.

      • 3322: a DDNS server with the domain name as www.3322.org.

      NOTE:

      When the device functions as the DDNS client and communicates with Siemens DDNS server, the device needs to encrypt packets using SSL. The DDNS policy needs to be bound to the SSL policy only when the device functions as the DDNS client and communicates with Siemens DDNS server.

      User name

      User name obtained from the DDNS service provider. You must register an account including the user name and password with the DDNS server provider's website.

      Password

      Password used by the DDNS client to access the DDNS server. You must register an account including the user name and password with the DDNS server provider's website.

      Confirm password

      Re-enter the password that is set.

      Bound interface

      DDNS client interface bound to a DDNS policy.

      Ensure that the route between the DDNS client and the DDNS server is reachable.

      Click to add an interface. You can bind a maximum of eight interfaces to a DDNS policy.

      Update interval

      Interval for sending DDNS Update requests.

  • Modifying a DDNS client
    1. Log in to the web platform and choose IP Service > DNS > DDNS.
    2. Select a DDNS policy in the DDNS Configuration List area, and click .
    3. In the Modify DDNS dialog box that is displayed, modify parameters listed in Table 13-10. The parameter DDNS policy name cannot be modified.
    4. Click OK.
  • Deleting a DDNS client
    1. Log in to the web platform and choose IP Service > DNS > DDNS.
    2. Select the check box of a DDNS policy and click Delete.
    3. In the dialog box that is displayed, click OK.
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Updated: 2019-04-12

Document ID: EDOC1100041803

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