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ANS-C01 · Question #95

You have a global corporate network with 153 individual IP prefixes in your internal routing table. You establish a private virtual interface over AWS Direct Connect to a VPC that has an Internet…

The correct answer is B. Summarize your prefix announcement to less than 100. 100 prefix is the limit on BGP over direct connect. https://docs.aws.amazon.com/directconnect/latest/UserGuide/limits.html

Submitted by ahmad_uae· Mar 6, 2026Design and Implement Hybrid Connectivity

Question

You have a global corporate network with 153 individual IP prefixes in your internal routing table. You establish a private virtual interface over AWS Direct Connect to a VPC that has an Internet gateway (iGW). All instances in the VPC must be able to route to the Internet via an IGW and route to the global corporate network via the VGW. How should you configure your on-premises BGP peer to meet these requirements?

Options

  • AConfigure AS-Prepending on your BGP session
  • BSummarize your prefix announcement to less than 100
  • CAnnounce a default route to the VPC over the BGP session
  • DEnable route propagation on the VPC route table

How the community answered

(31 responses)
  • A
    13% (4)
  • B
    61% (19)
  • C
    19% (6)
  • D
    6% (2)

Explanation

100 prefix is the limit on BGP over direct connect. https://docs.aws.amazon.com/directconnect/latest/UserGuide/limits.html

Topics

#Direct Connect#BGP configuration#Route summarization#VGW routing

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