CCNA (ICND2)ManagementUseful Commands

IP Domain-Lookup

Often when typing commands in a hurry, or just typing incorrect commands, Cisco routers will try to do a lookup to find out if the invalid command is the name of another device you are trying to connect to. This results in the router displaying ‘Translating “the command”…domain server (’ three times and not accepting any more commands until the lookup has completed and failed.

This feature can be disabled quickly and it’s one of the first commands I will put onto a router when first configuring it.

Below is a live demo demonstrating the problem, and the fix with the command ‘no ip domain-lookup’

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