Displaying And Maintaining Dns; Troubleshooting Dns Configuration - 3Com WX3000 Series Operation Manual

Displaying and Maintaining DNS

To do...
Display static DNS database
Display the DNS server
information
Display the DNS suffixes
Display the information in the
dynamic domain name cache
Display the DNS resolution result
Clear the information in the
dynamic domain name cache

Troubleshooting DNS Configuration

Symptom
After enabling the dynamic domain name resolution, the user cannot get the correct IP address.
Solution
Use the display dns dynamic-host command to check that the specified domain name is in the
cache.
If there is no defined domain name, check that dynamic domain name resolution is enabled and the
DNS client can communicate with the DNS server.
If the specified domain name exists in the cache but the IP address is incorrect, check that the DNS
client has the correct IP address of the DNS server.
Check that the mapping between the domain name and IP address is correct on the DNS server.
Use the command...
display ip host
display dns server [ dynamic ]
display dns domain [ dynamic ]
display dns dynamic-host
nslookup type { ptr ip-address | a
domain-name }
reset dns dynamic-host
1-6
Remarks
Available in any view
Available in any view
Available in user view