554 CHAPTER 48: DNS CONFIGURATION
Reply from 3.1.1.1: bytes=56 Sequence=2 ttl=255 time=1 ms
Reply from 3.1.1.1: bytes=56 Sequence=3 ttl=255 time=1 ms
Reply from 3.1.1.1: bytes=56 Sequence=4 ttl=255 time=1 ms
Reply from 3.1.1.1: bytes=56 Sequence=5 ttl=255 time=1 ms
--- 3.1.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 1/1/3 ms
--- host.com ping statistics ---
5 packet(s) transmitted
0 packet(s) received
100.00% packet loss
Troubleshooting DNS 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.
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