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Exam 300-425 topic 1 question 168 discussion

Actual exam question from Cisco's 300-425
Question #: 168
Topic #: 1
[All 300-425 Questions]

A customer has this wireless design:
• two Cisco Catalyst 9800 Series wireless controllers that are configured in a high-availability SSO cluster to manage the APs in a local office network
• 100 APs in local mode that are registered to the high-availability cluster
• one Catalyst 9800 Series wireless controller that is deployed as an anchor in a DMZ
• a CAPWAP tunnel in UP state between the high-availability cluster and the anchor WLC

The customer wants the anchored traffic to remain up if a single WLC in the high-availability cluster fails. How must this requirement be incorporated into the design?

  • A. Configure the APs with the high-availability cluster as the primary base.
  • B. Deploy EMC APs as anchors and configure a high-availability cluster.
  • C. Create a separate EoIP tunnel for each WLC in the high-availability cluster.
  • D. Configure the mobility MAC address for the high-availability cluster.
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Suggested Answer: D 🗳️
by Jonycici at Oct. 26, 2024, 3:21 p.m.

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Farhad123
2 months, 1 week ago
Selected Answer: D
The customer wants guest traffic to remain operational and the CAPWAP tunnel to stay up if one of the WLCs in the HA cluster fails. In the HA SSO architecture in Catalyst 9800, the Mobility MAC address serves as a unique identifier for the entire cluster. When the Active WLC fails, the Standby WLC immediately takes over without disrupting the CAPWAP tunnel to the Anchor WLC. This single Mobility MAC address ensures that the Anchor WLC perceives the connection as unchanged, allowing the CAPWAP tunnel to remain intact without interruption. Without Mobility MAC configuration, during the switchover to the Standby WLC, the CAPWAP tunnel would need to be re-established, potentially causing a temporary disruption in guest traffic. https://www.cisco.com/c/dam/en/us/td/docs/wireless/controller/9800/17-1/deployment-guide/c9800-ha-sso-deployment-guide-rel-17-1.pdf
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Jonycici
6 months, 1 week ago
Selected Answer: D
D. Configuring the mobility MAC address ensures that the mobility group maintains a consistent identity, allowing seamless failover and continuity of anchored traffic.
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