BGP Routing Features in a Service Provider IP NGN Environment
Refer to the configuration exhibit, taken from a Cisco IOS-XR router.
!
router static
address-family ipv4 unicast
192.0.2.1/32 null0
!
route-policy RTBH
if tag is 666 then
set next-hop 192.0.2.1
andif
end-policy
!
router bgp 65123
address-family ipv4 unicast
redistribute static route-policy RTBH
!
!When attacks are detected from 209.165.201.144/28
!
router static
address-family ipv4 unicast
209.165.201.144/28 null0 tag 666
!
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)