A.Configure OSPF between trigger router and black hole routes
B.Configure all edge routers with static （reserved） host route to Null0
C.Configure BGP beteen trigger and black hole routers
D.Configure on trigger router to advertise victim host route with commumity
E.Activate black hole by redistributing route for victim into BGP with next-hop set to the static（reserved）host route configured on edge routers
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A.CoPP protects against IP spoofing；Racl protects against DoS attacks.
B.CoPP can not use named access lists；Racl can use named access lists
C.CoPP applies to a dedicated control plane interface；Racl applies to all interfaces.
D.CoPP needs a AAA server，Racl does not need a AAA server
E.CoPP supports rate limits；Racl does not support rate limits
A.OSPF
B.ISIS
C.BGP
D.RSVP
E.PIM
A.IS-Type
B.Overload （LSPDBOL）
C.Pseudonode （PN）
D.Attached （ATT）
E.Fragment （Frag-Nr）
F.Partition （P）
A.bgp
B.mpls_idp
C.sysmgr
D.wdsysmon
E.gsp
A.normal
B.select
C.random
D.discard
E.full
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