Which BGP attribute is used by BGP to prevent routing loops?

Which BGP attribute is used by BGP to prevent routing loops?
Select the best response.

A.
AS-path

B.
next-hop

C.
MED

D.
weight

E.
local preference

F.
origin

Discussion

One Response to “Which BGP attribute is used by BGP to prevent routing loops?”

  1. Charles says:

    Answer: A

    Explanation

    The AS-PATH attribute is used to prevent BGP routing loops. When receiving an BGP advertisement, the router checks the AS-PATH attribute, if it see it’s own AS number in the AS-Path then it is a routing loop so the router will not install this route in its BGP table.

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