An administrator is configuring an extended ACL for BGP route selection. Which ACE should the administrator issue to permit only 10.0.0.0 networks with a /16 through /32 prefix?

Last Updated: May 13, 2021
IT Exam Items Repository › Category: CCNP › An administrator is configuring an extended ACL for BGP route selection. Which ACE should the administrator issue to permit only 10.0.0.0 networks with a /16 through /32 prefix?

An administrator is configuring an extended ACL for BGP route selection. Which ACE should the administrator issue to permit only 10.0.0.0 networks with a /16 through /32 prefix?

  • permit ip 10.0.0.0 255.255.255.255 255.255.255.0 0.0.0.255
  • permit ip 10.0.0.0 0.0.255.255 255.255.255.0 0.0.0.255
  • permit ip 10.0.0.0 0.0.0.255 0.0.0.255 255.255.255.0
  • permit ip 10.0.0.0 0.0.255.255 255.255.0.0 0.0.0.255

Explanation: When an ACL is used for BGP network selection, the ACE source field matches against the network portion of the network, and the destination field matches against the network mask. In this example, the ACE source field and wildcard-mask of 10.10.0.0 0.0.255.255 will match the first 16 bits of network 10.0.0.0. The destination field and wildcard-mask of 255.255.0.0 0.0.255.255 will match prefix lengths of /16 through /32.

Related exam: CCNP ENARSI v8 Certification Practice Exam

About The Author

ITExam Editorial Team

The ITExamAnswers Editorial Team is a dedicated group of certified IT professionals and network engineers. We rigorously review, verify, and update all exam materials to ensure you receive the most accurate and reliable resources for your certification journey.