Which DHCP option helps lightweight APs discover the IP address of a WLC?
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Correct answer: Option 43.
Why this is the answer
Option 43 is the correct DHCP option for lightweight APs to discover the IP address of a Wireless LAN Controller (WLC). This vendor-specific option allows the DHCP server to provide a list of WLC IP addresses to the AP, enabling it to join the correct controller. Option 60 is used for vendor class identifier information, which helps the DHCP server identify the type of client requesting an IP address, but not the WLC itself. Option 67 specifies the bootfile name for network booting, typically used for PXE (Preboot Execution Environment) clients. Option 150 is used for TFTP server IP addresses, primarily in IP telephony environments for phone firmware downloads, not WLC discovery.
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