On a Cisco router, which command is used to forward client broadcast requests for dynamic network configuration to a server on another subnet?
ip forward-protocol [server IP address]
ip address-helper [server IP address]
ip relay-address [server IP address]
ip helper-address [server IP address]
The ip helper-address command is used on a Cisco router to forward certain UDP broadcasts, including those for dynamic IP address assignment (such as DHCP), to a specified unicast IP address. This allows clients on one subnet to obtain network configuration from a server on a different subnet. The other options are invalid or incorrect commands for this purpose.
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