Cisco Disable DNS lookup or Configure DNS
Cisco Disable DNS lookup or Configure DNS
On Cisco Router or Switch if you type a wrong command in the privileged mode, the switch/router thinks that user trying to connect to a remote host via telnet. So router/switch performs a DNS lookup.
If DNS is not configured on the Router/Switch the console prompt will hang until the DNS timeouts.
Router#abcd
Translating "abcd"...domain server (255.255.255.255)
(255.255.255.255)
Translating "abcd"...domain server (255.255.255.255)
% Unknown command or computer name, or unable to find computer
address
Router#
To resolve this option option or to disable DNS doamin lookup use below command.
Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#no ip domain-lookup
Router(config)#WR
The second option is to configure DNS and point it to your DNS server. as shown below,
Router(config)# ip name-server 192.168.100.1
