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Computer Networking : A Top-Down Approach

Computer Networking : A Top-down Approach

Authors:
James F. Kurose, Keith W. Ross
Exercise:
Review
Chapter:
Computer Networks And The Internet
Edition:
6
ISBN:
9780132856201
Question:
14

 

Question

Why will two ISPs at the same level of the hierarchy often peer with each other? How does an IXP earn money?

Answer

  • Using the intermediate ISP provider to carry the traffic by the two ISPs.
  • It is an extra burden to the two ISPs.
  • If hierarchy often peer with each other then reduces the cost for two ISPs to avoid intermediate ISP provider.

So, the t wo ISPs at the same level of the hierarchy often peer with each other.

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  • IXP means Internet eXchange Point. Its contains multple ISPs to exchange traffice in internet.
  • Then charge the money to each ISP that connects to it.

So, an IXP earn money.

 

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