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JN0-661 · Question #59

Your company has multiple upstream BGP connections to the Internet ISP-A, ISP-B, and ISP-C. You want to ensure that all traffic coming into your network uses ISP-A. How would you accomplish this task?

The correct answer is B. Prepend your AS number on routes being advertised to ISP-B and ISP-C. See the full explanation below for the reasoning.

Question

Your company has multiple upstream BGP connections to the Internet ISP-A, ISP-B, and ISP-C. You want to ensure that all traffic coming into your network uses ISP-A. How would you accomplish this task?

Options

  • AChange the route preference to be higher on routes being advertised to ISP-B and ISP-C.
  • BPrepend your AS number on routes being advertised to ISP-B and ISP-C.
  • CChange the local preference to be higher on routes being advertised to ISP-A.
  • DPrepend your AS number on routes being advertised to ISP-A.

How the community answered

(57 responses)
  • A
    9% (5)
  • B
    72% (41)
  • C
    4% (2)
  • D
    16% (9)

Community Discussion

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Full JN0-661 Practice