H3C Technologies H3C S12500 Series Switches - Manual (Page 87)

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Step Command Remarks
2. Specify the DNS trusted
interface. dns trust-interface interface-type
interface-number By default, no DNS trusted
interface is specified.
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Displaying and maintaining IPv4 DNS
Execute display commands in any view and reset commands in user view.
Task Command
Display the domain name resolution
table.
display dns host [ ip | ipv6 ] [ vpn-instance vpn-instance-name ]
Display IPv4 DNS server information. display dns server [ dynamic ] [ vpn-instance vpn-instance-name ]
Display DNS suffixes. display dns domain [ dynamic ] [ vpn-instance vpn-instance-name ]
Clear information about the dynamic
domain name cache.
reset dns host [ ip | ipv6 ] [ vpn-instance vpn-instance-name ]
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IPv4 DNS configuration examples
By default, Ethernet, VLAN, and aggregate interfaces are down. To configure such an interface, bring
the interface up by executing the undo shutdown command.
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Static domain name resolution configuration example
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Network requirements
As shown in
734H
Figure 30 , the device wants to access the host by using an easy-to-remember domain name
rather than an IP address.
Configure static domain name resolution on the device so that the device can use the domain name
host.com to access the host whose IP address is 10.1.1.2.
Figure 30 Network diagram
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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 device 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
56 bytes from 10.1.1.2: icmp_seq=0 ttl=255 time=1.000 ms