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Troubleshooting dns, Symptom, Solution – H3C Technologies H3C S3100 Series Switches User Manual

Page 945

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Reply from 3.1.1.1: bytes=56 Sequence=2 ttl=125 time=4 ms

Reply from 3.1.1.1: bytes=56 Sequence=3 ttl=125 time=4 ms

Reply from 3.1.1.1: bytes=56 Sequence=4 ttl=125 time=4 ms

Reply from 3.1.1.1: bytes=56 Sequence=5 ttl=125 time=5 ms

--- host.com ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 4/4/5 ms

Troubleshooting DNS

Symptom

After enabling the dynamic domain name resolution, the user cannot get the correct IP address.

Solution

z

Use the display dns dynamic-host command to check that the specified domain name is in the

cache.

z

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.

z

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.

z

Check that the mapping between the domain name and IP address is correct on the DNS server.