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Proxy mode

As explained in Acing the CCNA Exam: Volume 2 Advanced Networking and Security

Proxy mode is a wireless controller mode in which the controller represents wireless clients when forwarding their DHCP messages.

Proxy mode is a Cisco WLC wireless-controller mode that represents wireless clients when forwarding their DHCP messages, functioning like a DHCP relay agent. section 21.1.2 section 21.4

Choose between these DHCP forwarding behaviors during WLC configuration:

  • Enable DHCP bridging to forward client DHCP messages unchanged, translating 802.11 frames into Ethernet frames. section 21.1.2
  • Accept the default NO response to DHCP bridging so the WLC operates in proxy mode. section 21.1.2 section 21.4

Initial configuration prompt

Configure DHCP Bridging Mode [yes][NO]: Press Enter to retain the default NO and use proxy mode. section 21.1.2

How Acing the CCNA Exam: Volume 2 Advanced Networking and Security covers it

How deep it goes
Explains relay-like behavior and contrasts it with frame translation, but does not detail packet exchanges or verification commands.
Examples
Uses the WLC initial-configuration prompt and its default NO response for DHCP bridging.
What it assumes
Assumes familiarity with wireless clients, DHCP messages, and initial WLC configuration.
What you can do after
Operate/configure WLC DHCP handling by selecting proxy mode or DHCP bridging mode in the setup wizard.
How it connects
Connects DHCP messages, DHCP relay agents, DHCP bridging mode, wireless clients, and wireless LAN controllers.
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Related concepts

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