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Authors:
James F. Kurose, Keith W. Ross
Chapter:
The Network Layer
Exercise:
Review
Question:31 | ISBN:9780132856201 | Edition: 6

Question

Describe how a network administrator of an upper-tier ISP can implement policy when configuring BGP.

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Answer

The below steps are to network administrator of an upper-tier ISP can implement policy when configuring BGP:

  • Let us assume Assumethe three ISPs such as ISP A, ISP B and ISP C.
  • Take ISP B does not carry  between ISP A and ISP C.
  • Then ISP A and ISP C have ISP B as their BGP peers
  • ISP B does not promote to ISP A, which authorization through ISP C.
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