4000 Router Series Layer 3 - IP Services Configuration Guide

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To specify the DSCP value for outgoing DDNS packets:

Step Command Remarks

1. Enter system view.

system-view N/A

2. Specify the DSCP value

for outgoing DDNS

packets.

ddns dscp dscp-value

By default, the DSCP value for

outgoing DDNS packets is 0.

Displaying DDNS

Execute display commands in any view.

Task Command

Display information about the DDNS policy. display ddns policy [ policy-name ]

DDNS configuration examples

DDNS configuration example with www.3322.org

Network requirements

As shown in Figure 46, Router is a Web server with the domain name whatever.3322.org.

Router acquires the IP address through DHCP. Through DDNS service provided by www.3322.org,

Router informs the DNS server of the latest mapping between its domain name and IP address. Router

uses the DNS server to translate www.3322.org into its IP address.

Figure 46 Network diagram

Router

DDNS client

www.3322.org

DDNS server

DNS server

IP network

Eth1/1

1.1.1.1