dns command

Use this command to view and set the DNS configuration of the IMM.

Note

In a Flex System, DNS settings cannot be modified on the IMM. DNS settings are managed by the CMM.

Running the dns command with no options displays all DNS configuration information. The following table shows the arguments for the options.

Table 1. dns command.
The following table is a multi-row three column table consisting of the options, option descriptions, and associated values for the options.
Option	Description	Values
-state	DNS state	on, off
-ddns	DDNS state	enabled, disabled
-i1	Primary IPv4 DNS server IP address	IP address in dotted decimal IP address format.
-i2	Secondary IPv4 DNS IP address	IP address in dotted decimal IP address format.
-i3	Tertiary IPv4 DNS server IP address	IP address in dotted decimal IP address format.
-i61	Primary IPv6 DNS server IP address	IP address in IPv6 format.
-i62	Secondary IPv6 DNS IP address	IP address in IPv6 format.
-i63	Tertiary IPv6 DNS server IP address	IP address in IPv6 format.
-p	IPv4/IPv6 priority	ipv4, ipv6

Syntax:

dns [options]
option:
  -state state
  -ddns state
  -i1 first_ipv4_ip_address
  -i2 second_ipv4_ip_address
  -i3 third_ipv4_ip_address
  -i61 first_ipv6_ip_address
  -i62 second_ipv6_ip_address
  -i63 third_ipv6_ip_address
  -p priority

Note

The following example shows an IMM configuration where DNS is disabled.

Example:

system> dns
   -state   :  disabled
   -i1      :  0.0.0.0
   -i2      :  0.0.0.0
   -i3      :  0.0.0.0
   -i61     :  ::
   -i62     :  ::
   -i63     :  ::
   -ddns    :  enabled
   -dnsrc   :  DHCP
   -ddn     :
   -ddncur  :  labs.lenovo.com
   -p       :  ipv6
   -dscvry  :  enabled

system>

The following table describes the options used in the previous example.

Table 2. dns command output.
The following table is a multi-row two column table describing the options used in the previous example.
Option	Description
-state	State of DNS (on or off)
-i1	Primary IPv4 DNS server IP address
-i2	Secondary IPv4 DNS IP address
-i3	Tertiary IPv4 DNS server IP address
-i61	Primary IPv6 DNS server IP address
-i62	Secondary IPv6 DNS IP address
-i63	Tertiary IPv6 DNS server IP address
-ddns	State of DDNS (enabled or disabled)
-dnsrc	Preferred DDNS domain name (dhcp or manual)
-ddn	Manually specified DDN
-ddncur	Current DDN (read only)
-p	Preferred DNS servers (ipv4 or ipv6)

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