3Com Switch 7750 Configuration Guide Guide

776 CHAPTER 72: DNS CONFIGURATION
Network diagram
Figure 199 Network diagram for dynamic DNS resolution
Configuration procedure
n
Before doing the following configuration, suppose the route between the Switch
7757 and host 1 is reachable, the DNS server works normally, and a mapping entry
from host 1 to IP address 3.1.1.1/16 exists on the DNS server.
# Enable dynamic DNS resolution.
<SW7750> system-view
[SW7750] dns resolve
# Configure the DNS server IP address 2.1.1.2.
[SW7750] dns server 2.1.1.2
# Configure net as a DNS suffix.
[SW7750] dns domain net
# Configure com as a DNS suffix.
[SW7750] dns domain com
Ping host 1 on the Switch 7750 to verify the configuration and the corresponding
IP address (it should be 3.1.1.1).
Displaying and
Maintaining DNS
After the above configuration, you can execute the display command in any view
to view the DNS configuration and running information to verify your
configuration.
You can execute the reset command in user view to clear the dynamic DNS cache.
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
S6506
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
2.1.1.2/16
host 1
3.1.
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
2.1.1.2/16
host 1
3.1.1.1/16
DNS Cl ientDNS Server
Internet
2.1.1.1/16 1.1.1.1/16
S6506
Tabl e 599 Display and maintain DNS
Operation Command Description
Display static DNS list
information
display ip host
You can execute the display
command in any view.
Display DNS server
information
display dns server [
dynamic ]
Display DNS suffix list
information
display dns domain
Display dynamic DNS cache
information
display dns dynamic-host