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• Make sure the devices can reach each other.
# Create a DDNS policy named 3322.org, and enter its view.
<Router> system-view
[Router] ddns policy 3322.org
# Specify the URL address, username, and password for DDNS update requests.
[Router-ddns-policy-3322.org] url
http://members.3322.org/dyndns/update?system=dyndns&hostname=<h>&myip=<a>
[Router-ddns-policy-3322.org] username steven
[Router-ddns-policy-3322.org] password simple nevets
# Set the interval to 15 minutes for sending DDNS update requests.
[Router-ddns-policy-3322.org] interval 0 0 15
[Router-ddns-policy-3322.org] quit
# Specify the IP address of the DNS server as 1.1.1.1.
[Router] dns server 1.1.1.1
# Apply DDNS policy 3322.org to GigabitEthernet 1/0/1 to enable DDNS update. The mapping
between domain name whatever.3322.org and the primary IP address of GigabitEthernet 1/0/1 will
be dynamically updated.
[Router] interface gigabitethernet 1/0/1
[Router-GigabitEthernet1/0/1] ddns apply policy 3322.org fqdn whatever.3322.org
DDNS configuration example with PeanutHull server
Network requirements
As shown in Figure 56, the router is a Web server with domain name whatever.gicp.cn and uses an
IP address dynamically obtained through DHCP. To make sure the router can always provide Web
services at whatever.gicp.cn when its IP address changes, perform the following tasks on the
router:
• Configure a DDNS policy to update the router's domain name-to-IP address mapping on the
DDNS server. The DDNS server then updates the mapping on the DNS server.
• Specify the IP address of the DNS server so that the router can access the DDNS server
through domain name.
Figure 56 Network diagram
Router
DDNS client
www.oray.cn
DDNS server
DNS server
IP network
GE1/0/1
1.1.1.1
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