Measure for troubleshooting DNS faults on the AR

1

If the DNS fault occurs on a Huawei AR, you can perform the following operations:
1. Run the display dns dynamic-host command to check whether the specified domain name exists in the dynamic domain name cache.
-If the domain name to be parsed does not exist, check whether the AR and the DNS server communicate with each other properly, whether the DNS server works properly, and whether dynamic domain name resolution is enabled.
- If the domain name to be parsed exists but the IP address is incorrect, perform step 2.
2. Run the display dns server command to check the DNS server configuration. Check whether the IP address of the DNS server is correct.
If the IP address of the DNS server is incorrect, run the undo dns server ip-address command to delete the configured DNS server address, and then run the dns server ip-address command to reconfigure correct IP address for the DNS server.

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