300-425 · Question #347
A wireless environment in a hospital experiences issues with uptime. Management decides to install an additional Cisco WLC to provide redundancy in the event of a failure. Due to the sensitive…
The correct answer is C. SSO. Stateful Switchover (SSO) provides sub-second failover for physical controller failures and very fast recovery for network failures while preserving session state. Because the active and standby WLCs share state information, failover is transparent to external systems such as…
Question
A wireless environment in a hospital experiences issues with uptime. Management decides to install an additional Cisco WLC to provide redundancy in the event of a failure. Due to the sensitive nature of the equipment in the hospital, WLCs must fail over within one second for physical failures and in less than 10 seconds for a network gateway failure. Failover must be transparent to services such as Cisco Catalyst Center (formerly DNA Center) and Cisco ISE. Which high availability design approach must the engineer take to meet the requirements?
Options
- Amobility groups
- BN+1
- CSSO
- DN+2
How the community answered
(30 responses)- A7% (2)
- B17% (5)
- C73% (22)
- D3% (1)
Explanation
Stateful Switchover (SSO) provides sub-second failover for physical controller failures and very fast recovery for network failures while preserving session state. Because the active and standby WLCs share state information, failover is transparent to external systems such as Cisco Catalyst Center and Cisco ISE, meeting the hospital’s strict uptime and transparency requirements.
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