How Do You Get the Latest wIPS/wIDS Detection Definitions?

300-430 By islever Editorial Last updated

Implement wIPS using Cisco Catalyst Center (formerly Cisco DNA Center)

Short answer

A Update the Cisco MSE software so the wIPS service holds the latest wIPS/wIDS detection definitions it propagates to the controller and its wIPS APs.

Question

An engineer manages the wireless network for a government agency. The wireless network is used for access to the corporate network. The wireless network must include the latest wIPS/wIDS detection definitions. Which action does the engineer take to ensure that this requirement is met?
  1. Update the Cisco MSE software. Correct Answer
  2. Configure Cisco Prime Infrastructure to push new definitions to the APs.
  3. Update the Cisco WLC software.
  4. Configure the Cisco WLC to repoll the Cisco MSE for update definitions.

Key Takeaways

The question tests where wIPS/wIDS detection definitions originate in a Cisco wireless architecture, and the trap is assuming the WLC or Prime Infrastructure generates them instead of merely relaying them.

Keeping a Cisco wireless network current with the newest wIPS/wIDS detection definitions depends on where those signatures actually live. The profiles and signature engine are hosted by the wIPS service on the Cisco MSE, so updating the MSE software is the action that satisfies the requirement.

Common mistake: Choosing to update the Cisco WLC software (C) is the most common error, because the WLC does store and forward wIPS profiles to APs — but it only relays profiles it receives from the MSE, so it cannot introduce new detection definitions on its own.

Expert Analysis

Why the Answer Is Correct

The wIPS/wIDS engine and its library of detection signatures and profiles run inside the wIPS service hosted on the Cisco Mobility Services Engine, not on the controller or the APs. Cisco's WiPS deployment documentation describes the distribution flow: the updated profile originates from the MSE, is pushed to the controllers, and is then relayed to the wIPS access points. Because the definitions ship with the MSE wIPS service, updating the Cisco MSE software is the only listed action that guarantees the newest wIPS/wIDS detection content is present in the environment. Anything done downstream only propagates what the MSE already knows, so it cannot add signatures the MSE does not yet have.

Why the Other Options Are Wrong

Updating the Cisco WLC software (C) feels plausible because the controller participates in the flow, but the guide text Ocsicccnp cites states that "The Wireless LAN Controller receives the updated wIPS profile" — the WLC is a conduit, storing and CAPWAP-forwarding a profile it did not author. Configuring Cisco Prime Infrastructure to push definitions to APs (B) confuses management with signature generation; Prime Infrastructure provisions and monitors the MSE, it is not the source of wIPS detection content. Repolling the MSE from the WLC (D) is not a real feature — there is no WLC setting that pulls fresh definitions from the MSE, and it is the MSE that initiates profile distribution. None of these options place new detection definitions into the system.

Community Comment Notes

Votes are split between A and C, but the more detailed comments point to A: Le91 explains that "The actual profiles are stored within the wIPS service running on the MSE", which is exactly why the MSE software is the update target. largestyle makes the same architectural point, noting the richer signature set — "The most advanced WIPS with 200 + signature's is via MSE/CMX" — is delivered through the MSE/CMX path. Matthew_y128 and R3DAlert also landed on A. Ocsicccnp voted C using the deployment guide, but the passage quoted describes the WLC relaying a profile it received from the MSE, which supports A rather than contradicting it.

Official Reference

https://www.cisco.com/c/en/us/td/docs/wireless/technology/wips/deployment/guide/WiPS_deployment_guide.html

This link opens the official vendor documentation in a new tab.

Exam Strategy

Map every wIPS question to its data flow first: MSE wIPS service (definitions) → controller (store/relay) → wIPS APs (enforce). Any option that edits a downstream component without touching the MSE should be treated as a distractor when the requirement is 'latest definitions'.

Frequently Asked Questions

Why isn't updating the Cisco WLC software enough to get new wIPS definitions?

The WLC only stores and forwards the wIPS profile it receives from the MSE, then relays it to APs via CAPWAP; new detection signatures ship with the MSE wIPS service, not with controller code.

Can Cisco Prime Infrastructure push new wIPS/wIDS definitions to the APs?

No. Prime Infrastructure configures and monitors the MSE, but the wIPS service on the MSE is the source of the profiles that flow to controllers and then to wIPS access points.

More 300-430 FAQ →

Community Votes

C
40%
A
40%
B
20%

40% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 6 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 6

  1. Ocsicccnp 👍 2 Answered C
    https://www.cisco.com/c/en/us/td/docs/wireless/technology/wips/deployment/guide/WiPS_deployment_guide.html#:~:text=4.%20The%20Wireless,wIPS%20software%20engine 4. The Wireless LAN Controller receives the updated wIPS profile, stores it into NVRAM (replacing any previous revision of the profile) and propagates the updated profile to its associated wIPS Access Points via CAPWAP control messages. 5. A wIPS Mode Access Point receives the updated profile from the controller and applies the modifications to its wIPS software engine.
  2. rrahim 👍 1 Answered B
    Cisco Prime Infrastructure: This is the central management platform for wireless networks. It can be configured to automatically push the latest wIPS/wIDS detection definitions to the access points (APs). This ensures that the APs are always updated with the latest threat detection capabilities. Why not the other options? A. Update the Cisco MSE software: While the Cisco Mobility Services Engine (MSE) is used for location and context-aware services, it is not directly responsible for pushing wIPS/wIDS definitions to APs. C. Update the Cisco WLC software: Updating the WLC software ensures the controller has the latest features and bug fixes but does not directly update wIPS/wIDS definitions on the APs. D. Configure the Cisco WLC to repoll the Cisco MSE for update definitions: This is not the correct approach, as the MSE does not handle wIPS/wIDS definition updates for APs. Thus, the correct action is to configure Cisco Prime Infrastructure to push new definitions to the APs.
  3. Le91 👍 1
    A: The actual profiles are stored within the wIPS service running on the MSE. From the wIPS Service on the MSE, profiles are propagated to specific controllers, which in turn communicate this profile transparently to wIPS Mode Access Points associated to that perspective controller.
  4. Matthew_y128 👍 1 Answered A
    I think A is correct, but B also looks right https://www.cisco.com/c/en/us/td/docs/wireless/technology/wips/deployment/guide/WiPS_deployment_guide.html#pgfId-43514
  5. largestyle 👍 1
    The most advanced WIPS with 200 + signature's is via MSE/CMX so A
Show 1 more comment
  1. R3DAlert 👍 1 Answered A
    A is correct

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