Configuring option 82, Troubleshooting ipv4 dns configuration, Symptom – H3C Technologies H3C S12500 Series Switches User Manual
Page 92: Solution

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56 bytes from 3.1.1.1: icmp_seq=2 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=3 ttl=255 time=1.000 ms
56 bytes from 3.1.1.1: icmp_seq=4 ttl=255 time=2.000 ms
--- host.com ping statistics ---
5 packet(s) transmitted, 5 packet(s) received, 0.0% packet loss
round-trip min/avg/max/stddev = 1.000/1.200/2.000/0.400 ms
88B
Troubleshooting IPv4 DNS configuration
236B
Symptom
After enabling dynamic domain name resolution, the user cannot get the correct IP address.
237B
Solution
1.
Use the display dns host ip command to verify that the specified domain name is in the cache.
2.
If the specified domain name does not exist, check that the DNS client can communicate with the
DNS server.
3.
If the specified domain name is in the cache, but the IP address is incorrect, check that the DNS
client has the correct IP address of the DNS server.
4.
Verify that the mapping between the domain name and IP address is correct on the DNS server.
- H3C SR8800 H3C SR6600-X H3C SR6600 H3C WX6000 Series Access Controllers H3C WX5000 Series Access Controllers H3C WX3000 Series Unified Switches H3C LSWM1WCM10 Access Controller Module H3C LSWM1WCM20 Access Controller Module H3C LSQM1WCMB0 Access Controller Module H3C LSRM1WCM2A1 Access Controller Module H3C LSBM1WCM2A0 Access Controller Module H3C S6800 Series Switches H3C S3100V2 Series Switches H3C S12500-X Series Switches H3C S9800 Series Switches