F5 BIG-IP Administration Support and Troubleshooting (F5CAB5) exam F5CAB5 Question # 16 Topic 2 Discussion
F5CAB5 Exam Topic 2 Question 16 Discussion:
Question #: 16
Topic #: 2
A BIG-IP Administrator adds new Pool Members into an existing, highly utilized pool. Soon after, there are reports that the application is failing to load for some users. What pool level setting should the BIG-IP Administrator check?
When adding new members to an active, high-traffic pool, the Slow Ramp Time setting is critical for maintaining application stability.
Mechanism: The Slow Ramp Time feature (located in the Pool properties) allows the BIG-IP system to gradually increase the number of connection requests sent to a newly added or recently enabled pool member.
The Issue: In a highly utilized pool, if Slow Ramp Time is set to 0 (the default), the BIG-IP immediately begins sending a proportional share of traffic to the new members. If the application requires a "warm-up" period (e.g., to build local caches or establish database connection pools), the sudden influx of traffic can overwhelm the new server, causing it to drop requests or fail to load content for users.
Recommendation: F5 recommends setting a non-zero Slow Ramp Time (measured in seconds) to allow the new member to scale up its processing capacity incrementally.
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