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<Router> system-view
[Router] ddns policy 3322.org
# Specify for DDNS update requests the URL address with the login ID steven and plaintext
password nevets.
[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 for sending DDNS update requests to 15 minutes.
[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 2/0/1 to enable DDNS update. The mapping
between domain name whatever.3322.org and the primary IP address of GigabitEthernet 2/0/1 will
be dynamically updated.
[Router] interface gigabitethernet 2/0/1
[Router-GigabitEthernet2/0/1] ddns apply policy 3322.org fqdn whatever.3322.org
After the configuration is completed, the router notifies the DNS server of its new domain name-to-IP
address mapping through the DDNS server provided by www.3322.org, whenever its IP address
changes. Therefore, the router can always provide Web service at whatever.3322.org.
DDNS configuration example with PeanutHull server
Network requirements
As shown in Figure 57, the router is a Web server with domain name whatever.gicp.cn. The router
acquires the IP address through DHCP. Through the PeanutHull server, the router informs the DNS
server of the latest mapping between its domain name and IP address. The router uses the DNS
server to translate www.oray.cn into its IP address.
Figure 57 Network diagram
Configuration procedure
Before configuring DDNS on the router, perform the following tasks:
• Register with username steven and password nevets at http://www.oray.cn/.
Router
DDNS client
www.oray.cn
DDNS server
DNS server
IP network
GE2/0/1
1.1.1.1
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