3Com Switch 8800 Advanced Software V5 Configuration Guide

Troubleshooting DNS Configuration 759
Figure 229 Add a mapping between domain name and IP address
2 Configure DNS client Device
# Enable dynamic domain name resolution.
<Sysname> system-view
[Sysname] dns resolve
# Configure IP address 2.1.1.2 for the DNS server
[Sysname] dns server 2.1.1.2
# Configure com as the DNS suffix
[Sysname] dns domain com
Execute the ping host command on the device to verify that the communication
between the device and the host is normal and that the corresponding destination
IP address is 3.1.1.1.
Troubleshooting DNS
Configuration
Symptom
After enabling the dynamic domain name resolution, the user cannot get the
correct IP address.
Analysis
The DNS client should be used in cooperation with the DNS server to obtain a
correct IP address through DNS resolution.
Solution
■ Use the display dns dynamic-host command to check that the specified
domain name is in the cache.