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300-425 · Question #217

A company installs a new anchor controller in the DMZ. The company has not upgraded the foreign controller for several years. The foreign controller runs code 7.5. The IT administrator suggests that…

The correct answer is D. Guest clients are tunneled to anchors with the highest priority. E. The foreign controller designates one anchor as primary and one or more anchors as secondary. Upgrading from code 7.5 to 8.10 or later introduces anchor controller prioritization, replacing the uncontrolled behavior of older code with a structured primary/secondary anchor hierarchy.

Mobility

Question

A company installs a new anchor controller in the DMZ. The company has not upgraded the foreign controller for several years. The foreign controller runs code 7.5. The IT administrator suggests that the company upgrade the foreign controller and the new anchor controller to 8.10 or later. Which two benefits must be incorporated into the design regarding the code upgrade? (Choose two.)

Options

  • AThe foreign controller load balances guest clients across the list of anchor controllers
  • BGuest clients are load balanced in round-robin fashion among the anchor controllers.
  • CUser devices must upgrade their WLAN card drivers.
  • DGuest clients are tunneled to anchors with the highest priority.
  • EThe foreign controller designates one anchor as primary and one or more anchors as secondary.

How the community answered

(42 responses)
  • A
    10% (4)
  • B
    2% (1)
  • C
    5% (2)
  • D
    83% (35)

Why each option

Upgrading from code 7.5 to 8.10 or later introduces anchor controller prioritization, replacing the uncontrolled behavior of older code with a structured primary/secondary anchor hierarchy.

AThe foreign controller load balances guest clients across the list of anchor controllers

The foreign controller does not load balance clients across anchor controllers - anchor selection is priority-based or availability-based, not load-driven.

BGuest clients are load balanced in round-robin fashion among the anchor controllers.

Round-robin distribution among anchors describes the legacy behavior present in code 7.5, not a benefit introduced by the upgrade to 8.10.

CUser devices must upgrade their WLAN card drivers.

A WLC software upgrade has no dependency on client WLAN adapter drivers and does not require users to update any device software.

DGuest clients are tunneled to anchors with the highest priority.Correct

Code 8.10 introduced anchor priority levels, so the foreign controller tunnels guest client sessions to whichever anchor holds the highest configured priority rather than selecting an anchor arbitrarily.

EThe foreign controller designates one anchor as primary and one or more anchors as secondary.Correct

With code 8.10 or later, the foreign controller can explicitly designate one anchor as primary and remaining anchors as secondary, creating a deterministic failover hierarchy that did not exist in 7.5.

Concept tested: Anchor controller priority hierarchy introduced in WLC code 8.10

Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-10/config-guide/b_cg810/b_cg810_chapter_010111001.html

Topics

#anchor controller#foreign controller#guest WLAN#anchor load balancing

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