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.

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

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Charles

Charles

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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