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1-5 
Displaying and Maintaining IPv4 DNS 
To do… 
Use the command… 
Remarks 
Display the static IPv4 domain name 
resolution table 
display ip host 
Available in any view 
Display IPv4 DNS server information 
display dns server [ dynamic ] 
Available in any view 
Display DNS suffixes 
display dns domain [ dynamic ]  Available in any view 
Display the information of the dynamic 
IPv4 domain name cache 
display dns dynamic-host 
Available in any view 
Clear the information of the dynamic 
IPv4 domain name cache 
reset dns dynamic-host 
Available in user view
 
IPv4 DNS Configuration Examples 
Static Domain Name Resolution Configuration Example 
Network requirements 
As shown in 
, static domain name resolution is configured on the Switch and thus the Switch 
can use the domain name host.com to access the host whose IP address is 10.1.1.2. 
Figure 1-3 Network diagram for static domain name resolution 
 
 
 
Configuration procedure 
# Configure a mapping between host name host.com and IP address 10.1.1.2. 
<Sysname> system-view 
[Sysname] ip host host.com 10.1.1.2 
# Use the ping host.com command to verify that the Switch can use static domain name resolution to 
resolve domain name host.com into IP address 10.1.1.2. 
[Sysname] ping host.com 
  PING host.com (10.1.1.2): 
  56  data bytes, press CTRL_C to break 
    Reply from 10.1.1.2: bytes=56 Sequence=1 ttl=128 time=1 ms 
    Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=128 time=4 ms 
    Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=128 time=3 ms 
    Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=128 time=2 ms 
    Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=128 time=3 ms 
 
  --- host.com ping statistics --- 
    5 packet(s) transmitted 
    5 packet(s) received