PCNSE · Question #505
A network administrator plans a Prisma Access deployment with three service connections, each with a BGP peering to a CPE. The administrator needs to minimize the BGP configuration and management…
The correct answer is D. default routing. Default routing minimizes CPE-side BGP overhead because each on-prem device only needs to receive (or advertise) a single default route (0.0.0.0/0) from Prisma Access, eliminating the need to manage, maintain, or troubleshoot dozens of specific prefix advertisements across…
Question
A network administrator plans a Prisma Access deployment with three service connections, each with a BGP peering to a CPE. The administrator needs to minimize the BGP configuration and management overhead on on-prem network devices. What should the administrator implement?
Options
- Atarget service connection for traffic steering
- Bsummarized BGP routes before advertising
- Chot potato routing
- Ddefault routing
How the community answered
(29 responses)- A3% (1)
- B3% (1)
- D93% (27)
Explanation
Default routing minimizes CPE-side BGP overhead because each on-prem device only needs to receive (or advertise) a single default route (0.0.0.0/0) from Prisma Access, eliminating the need to manage, maintain, or troubleshoot dozens of specific prefix advertisements across three service connections. When Prisma Access advertises a default route to the CPE, the CPE's BGP configuration stays flat and simple regardless of how the cloud-side topology grows.
Why the distractors are wrong:
- A (target service connection) - Traffic steering via targeted service connections adds policy complexity on the CPE, the opposite of minimizing overhead.
- B (summarized routes) - Summarization reduces route count but still requires the admin to define, maintain, and troubleshoot summary prefixes on each CPE; it doesn't approach the simplicity of a single default.
- C (hot potato routing) - This describes an inter-AS path selection strategy (exit traffic at the nearest point), not a mechanism for reducing BGP config on CPE devices.
Memory tip: Think of it as the "one rule to rule them all" principle - a default route is the ultimate summarization (all destinations in one entry), so CPEs need zero knowledge of what's behind Prisma Access, keeping BGP configs minimal and stable.
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