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Which BGP attribute is used as a loop-prevention mechanism in BGP?

  • Multiple-exit discriminator (MED)
  • Local Preference (LocPrf)
  • Next Hop
  • AS_Path
Explanation & Hint:

The BGP attribute used as a loop-prevention mechanism in BGP is AS_Path. This attribute lists all the Autonomous Systems (AS) that an advertisement has passed through to reach a destination. By inspecting the AS_Path, BGP can detect and prevent routing loops by rejecting routes that include its own AS number in the path.

For more Questions and Answers:

CCNPv8 ENCOR (Version 8.0) – Chapters 11 – 12: BGP Exam Answers Full 100%

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