Refer to the configuration exhibit, taken from a Cisco IOS-XR router.
Which configuration change is required to properly enable this router as the signaling router for
implementing source-based RTBH filtering?
A.
set community (no-export) in the route policy
B.
pass in the route policy
C.
set local-preference 1000 in the route policy
D.
The 192.0.2.1/32 static route should be tagged as 666 (tag 666)
can any one can explain the answer.
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set community (no-export) stops the route from being exported to EBGP neighbors. Therefore this command restricts the black-hole policy to only this Autonomous System.
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