Refer to the topology diagram shown in the exhibit and the partial configurations shown below. Once the attack from 209
Posted: Sat Jul 23, 2022 7:17 pm
Refer to the topology diagram shown in the exhibit and the partial configurations shown below.
Once the attack from 209.165.201.144/28 to 209.165.202.128/28 has been detected, which additional configurations are required on the P1 IOS-XR router to implement source-based remote-triggered black hole filtering?
!
router bgp 123
address-family ipv4 unicast
redistribute static route-policy test
!
A. router staticaddress-family ipv4 unicast209.165.202.128/28 null0 tag 666192.0.2.1/32 null0 tag 667!route-policy testif tag is 666 thenset next-hop 192.0.2.1endifif tag is 667 thenset community (no-export)endifend-policy!
B. router staticaddress-family ipv4 unicast209.165.201.144/28 null0 tag 666192.0.2.1/32 null0 tag 667!route-policy testif tag is 666 thenset next-hop 192.0.2.1endifif tag is 667 thenset community (no-export)endifend-policy!
C. router staticaddress-family ipv4 unicast209.165.201.144/28 null0 tag 666192.0.2.1/32 null0!route-policy testif tag is 666 thenset next-hop 192.0.2.1set community (no-export)endifend-policy
D. router staticaddress-family ipv4 unicast209.165.202.128/28 null0 tag 666192.0.2.1/32 null0!route-policy testif tag is 666 thenset next-hop 192.0.2.1set community (no-export)endifend-policy!
Once the attack from 209.165.201.144/28 to 209.165.202.128/28 has been detected, which additional configurations are required on the P1 IOS-XR router to implement source-based remote-triggered black hole filtering?
!
router bgp 123
address-family ipv4 unicast
redistribute static route-policy test
!
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B. router staticaddress-family ipv4 unicast209.165.201.144/28 null0 tag 666192.0.2.1/32 null0 tag 667!route-policy testif tag is 666 thenset next-hop 192.0.2.1endifif tag is 667 thenset community (no-export)endifend-policy!
C. router staticaddress-family ipv4 unicast209.165.201.144/28 null0 tag 666192.0.2.1/32 null0!route-policy testif tag is 666 thenset next-hop 192.0.2.1set community (no-export)endifend-policy
D. router staticaddress-family ipv4 unicast209.165.202.128/28 null0 tag 666192.0.2.1/32 null0!route-policy testif tag is 666 thenset next-hop 192.0.2.1set community (no-export)endifend-policy!