Troubleshooting Domain Name Resolution Configuration - 3Com 8807 Configuration Manual

712 C 58: DNS C
HAPTER
Troubleshooting
Domain Name
Resolution
Configuration
ONFIGURATION
Network diagram
Figure 167 Network diagram for DNS client
172.16.1.1
DNS Server
Configuraiton procedure
# Enable dynamic domain name resolution
[SW8800] dns resolve
# Configure the IP address of the domain name server to 172.16.1.1.
[SW8800] dns server 172.16.1.1
# Configure the domain name suffix as com.
[SW8800] dns domain com
# Ping a host with the specified domain name.
[SW8800] ping ftp
Trying DNS server (172.16.1.1)
PING ftp.com (200.200.200.200): 56
Reply from 200.200.200.200: bytes=56 Sequence=1 ttl=128 time=2 ms
Reply from 200.200.200.200: bytes=56 Sequence=2 ttl=128 time=2 ms
Reply from 200.200.200.200: bytes=56 Sequence=3 ttl=128 time=2 ms
Reply from 200.200.200.200: bytes=56 Sequence=4 ttl=128 time=2 ms
Reply from 200.200.200.200: bytes=56 Sequence=5 ttl=128 time=2 ms
--- ftp.com ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 2/2/2 ms
The routing configuration between the switch and the domain name sever is
omitted here, and refer to the related chapter for the configuration.
Fault: Domain name resolution fails.
Troubleshoot: Perform the following procedures:
Check whether the domain name resolution function is enabled.
■
Check whether the IP address of the domain name sever is correctly
■
configured.
Check whether there is a correct route between the domain name sever and
■
the switch.
Check whether there is network connection failure, such as network cable
■
break, loose connection, and so on.
Internet
data bytes, press CTRL_C to break
Switch