350-401 · Question #139
Which DHCP option helps lightweight APs find the IP address of a wireless LAN controller?
The correct answer is A. Option 43. DHCP Option 43 is the specific mechanism used by Lightweight Access Points to discover the IP address of their managing Wireless LAN Controller.
Question
Which DHCP option helps lightweight APs find the IP address of a wireless LAN controller?
Options
- AOption 43
- BOption 60
- COption 67
- DOption 150
How the community answered
(33 responses)- A88% (29)
- B3% (1)
- C3% (1)
- D6% (2)
Why each option
DHCP Option 43 is the specific mechanism used by Lightweight Access Points to discover the IP address of their managing Wireless LAN Controller.
DHCP Option 43 is a vendor-specific option commonly used by Cisco Lightweight Access Points (LAPs) to obtain the IP address(es) of the Wireless LAN Controller (WLC). This allows the APs to locate and communicate with the WLC for configuration, management, and to join the wireless network infrastructure.
DHCP Option 60 is the Vendor Class Identifier, used by a client to identify its type to the DHCP server, not to receive WLC IP information.
DHCP Option 67 specifies the bootfile name for clients, primarily used in PXE boot environments, and is unrelated to WLC discovery.
DHCP Option 150 is typically used by Cisco IP Phones to discover the IP address of a TFTP server for obtaining firmware and configuration files, not for WLC discovery by APs.
Concept tested: DHCP options for WLC discovery
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/lightweight_ap_config.html
Topics
Community Discussion
No community discussion yet for this question.