1.1.1 display
dns domain
Syntax
display dns domain [ dynamic ]
View
Any view
Parameter
dynamic: Display
the DNS suffixes dynamically configured by DHCP or other protocols.
Description
Use the display dns domain command
to display the DNS suffixes.
Related command: dns domain.
Example
# Display DNS suffixes
<H3C> display dns domain
No Domain-name
0 aaa.com
Table 1-1 Description on the fields of the
display dns domain command
|
Field
|
Description
|
|
No
|
—
|
|
Domain-name
|
Domain name suffix
|
1.1.2 display dns dynamic-host
Syntax
display dns dynamic-host
View
Any view
Parameter
None
Description
Use the display dns dynamic-host command
to display the dynamic domain name resolution cache information.
The dynamic domain name resolution caches
resent mappings between names and IP addresses. For the same domain name query,
the DNS Client would not send to the DNS Server if it is stored in the cache.
Example
# Display the information in the dynamic
domain name resolution cache.
<H3C> display dns dynamic-host
No Domain-name IpAddress
TTL Alias
0 www.baidu.com
202.108.249.134 63000
1 www.yahoo.akadns.net
66.94.230.39 24
2 www.hotmail.com
207.68.172.239 3585
3 www.eyou.com
61.136.62.70 3591
Table 1-2 Description on the field of
the display dns dynamic-host command
|
Field
|
Description
|
|
No
|
—
|
|
Domain-name
|
—
|
|
IpAddress
|
IP address for the corresponding domain
name
|
|
TTL
|
Time for storing in the cache memory (s).
|
|
Alias
|
Alias for the domain name, maximum 4
|
1.1.3 display
dns server
Syntax
display dns server [ dynamic ]
View
Any view
Parameter
Dynamic: Display
the DNS Server information configured by DHCP or other protocols
Description
Use the display dns server command to
display the DNS Server information.
Related command: dns server.
Example
# Display the DNS Server information.
<H3C> display dns server
Domain-server IpAddress
0 169.254.65.125
1 169.254.66.15
Table 1-3 Description on fields of the display
dns server command
|
Field
|
Description
|
|
Domain-server
|
Number of the DNS Server. Configured
automatically by the device, starts from 0.
Servers with IPv4 or IPv6 addresses are numbered
respectively.
|
|
IpAddress
|
IPv4 address of the DNS Server
|
|
Ipv6Address
|
IPv6 address of the DNS Server
|
|
Interface Name
|
Only available when the DNS Server is
configured with an IPv6 address.
|
1.1.4 display ip host
Syntax
display ip host
View
Any view
Parameter
None
Description
Use the display ip host command to
display the host names and corresponding IP addresses in the static domain name
resolution resolving list.
Example
# Display the host names and corresponding
IP addresses in the static domain name resolution resolving list.
<H3C> display ip host
Host Age Flags Address
My 0 static 1.1.1.1
Aa 0 static 2.2.2.4
Table 1-4 Description on fields of the display
ip host command
|
Field
|
Description
|
|
Host
|
Host name
|
|
Age
|
Time to live. 0 means the static list is
never outdated.
You can only manually remove the mappings
between host names and IP addresses.
|
|
Flags
|
Mapping types between host names and IP
addresses.
Static is the type for static domain name
resolution
|
|
Address
|
Host IP addresses
|
1.1.5 dns domain
Syntax
dns domain domain-name
undo dns domain [ domain-name ]
View
System view
Parameter
domain-name:
DNS suffixes, comprises 1 to 60 characters, including letters, numbers, hyphens
(-), underscores (_), and dots (.).
Description
Use the dns domain command to
configure the DNS suffixes.
Use the undo dns domain command to
delete the DNS suffixes.
No DNS suffixes are configured by default.
You can configure maximum 10 DNS suffixes.
You must input the suffix name to delete it, otherwise, all the statically
configured suffixes are deleted.
Related
command: display dns domain.
The domain name
resolution function supported by S3100-52P switch should be used together with
a domain name server. Different domain name server may have differences in DNS
implementation. For example, the S3100-52P supports a domain name which
includes “_”, while a Windows 2000 Server may not able to resolve
the “_”.
Example
# Configure com as a DNS suffix.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dns domain com
Syntax
dns resolve
undo dns resolve
View
System view
Parameter
None
Description
Use the dns resolve command to enable
dynamic domain name resolution.
Use the undo dns resolve command to
disable dynamic domain name resolution.
Dynamic domain name resolution is disabled
by default.
Example
# Enable dynamic domain name resolution.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dns resolve
1.1.7 dns
server
Syntax
dns server ip-address
undo dns server [ ip-address ]
View
System view
Parameter
ip-address:
IP address of the DNS Server.
Description
Use the dns server command to configure
an IP address to the DNS Server.
Use the undo dns server to remove IP
addresses.
No IP address is configured to the DNS
Server by default.
You can configure maximum 6 DNS Servers.
Related command: display dns server.
Example
# Configure a DNS Server address to
172.16.1.1.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dns server 172.16.1.1
Syntax
ip host hostname
ip-address
undo ip host
hostname [ ip-address ]
View
System view
Parameter
Hostname:
Host name, comprises 1 to 20 characters, including letters, numbers, hyphens
(-), or dots (.). The host name must include at least one letter.
ip-address: IP
address of the specified host in dotted decimal notation.
Description
Use the ip host command to create a
mapping between host name and IP address in the static resolving list.
Use the undo ip host command to
remove the mapping.
No mappings are created by default.
You can configure only one mapping between IP
address to host name. For example, a new mapping configured will overwrite the
old one if there is any.
Related command: display ip host.
Example
# Configure IP address 10.110.0.1 to a host
named aaa.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] ip host aaa 10.110.0.1
Syntax
nslookup type { ptr ip-address | a domain-name }
View
Any view
Parameter
ptr ip-address:
Resolves the corresponding DNS domain name for an IP address.
a domain-name: Resolves the corresponding IP address for a DNS
domain name. The domain name which is a string up to 30 characters supports
automatic domain name completing.
Description
Use the nslookup type command to display
the results of DNS resolution. It can resolve the corresponding IP address for
a specified domain name or resolve the corresponding domain name for a
specified IP address.
Example
# Display the corresponding domain name for
192.168.3.2.
<H3C> nslookup type ptr 192.168.3.2
Trying DNS server (10.72.66.36)
Name: www.h3c.com
Address: 192.168.3.2
# Display the corresponding IP address for www.h3c.com.
<H3C> nslookup type a www.h3c.com
Trying DNS server (10.72.66.36)
Name: www.h3c.com
Address: 192.168.3.2
Syntax
reset dns dynamic-host
View
User view
Parameter
None
Description
Use the reset dns dynamic-host
command to clear the cache.
Related command: display dns
dynamic-host.
Example
# Clear the cache.
<H3C> reset dns dynamic-host
