R21xx-HP FlexFabric 11900 Layer 3 IP Services Configuration Guide

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Figure 48 Network diagram

Configuration procedure

Before configuring DDNS on Switch, 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, and make

sure the devices can reach each other.

# Create a DDNS policy named 3322.org, and enter its view.

<Switch> 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=<h>&myip=<a>

[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

# Apply DDNS policy 3322.org to VLAN-interface 2 to enable DDNS update and dynamically update

the mapping between domain name whatever.3322.org and the primary IP address of VLAN-interface

[Switch] interface vlan-interface 2

[Switch-Vlan-interface2] ddns apply policy 3322.org fqdn whatever.3322.org

After the preceding configuration is completed, Switch notifies the DNS server of its new domain

name-to-IP address mapping through the DDNS server provided by www.3322.org, whenever the IP

address of Switch changes. Therefore, Switch can always provide Web service at whatever.3322.org.