H3C Technologies H3C S5560 Series Switches - Manual (Page 126)

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DDNS configuration examples
DDNS configuration example with www.3322.org
Network requirements
As shown in Figure 47 , Switch uses the domain name whatever.3322.org.
Switch acquires the IP address through DHCP. Through DDNS service provided by www.3322.org,
Switch informs the DNS server of the latest mapping between its domain name and IP address. Switch
uses the DNS server to translate www.3322.org into the corresponding IP address.
Figure 47 Network diagram
Configuration procedure
Before configuring DDNS on Switch, perform the following tasks:
• Register with username steven and password nevets at http://www.3322.org/.
• Add Switch's host name-to-IP address mapping to the DNS server.
• Make sure the devices can reach each other.
# Create a DDNS policy named 3322.org, and enter its view.
system-view
[Switch] ddns policy 3322.org
# Specify for DDNS update requests the URL address with the login ID steven and plaintext password
nevets.
[Switch-ddns-policy-3322.org] url http://
members.3322.org/dyndns/update?system=dyndns&hostname=&myip=
[Switch-ddns-policy-3322.org] username steven
[Switch-ddns-policy-3322.org] password simple nevets
# Set the interval for sending DDNS update requests to 15 minutes.
[Switch-ddns-policy-3322.org] interval 0 0 15
[Switch-ddns-policy-3322.org] quit
# Specify the IP address of the DNS server as 1.1.1.1.
[Switch] dns server 1.1.1.1