Refer to the Exhibit.
The exhibit shows a BGP multihomed network connecting to ISP A and ISP B. The secondary link
is to be used only in a failover scenario in which the primary link is not usable. Which BGP
attribute should you use to influence inbound traffic to use the primary link t hat is sourced from
ISP C?
A.
multiple exit discriminator (MED)
B.
local preference
C.
AS path
D.
origin
Explanation:
B
The answer is not B.
local preference remains local to an AS.
editing the local preference in ISPA and ISPB will not influence ISPC in choosing it’s path.
correct answer is indeed C. you can manipulate the AS path with policies so that other AS will route it in a certain way.