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JN0-691 · Question #48

Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1. user@r2# run show route 100.1.1.0/24 detail inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0…

The correct answer is D. An AS path loop is detected. See the full explanation below for the reasoning.

Question

Referring to the exhibit, router r2 does not advertise the static route to peer 10.1.2.1. user@r2# run show route 100.1.1.0/24 detail inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden) 100.1.1.0/24 (1 entry, 1 announced) *Static PreferencE. 5 Next hop typE. Reject Address: 0x8f7b5a4 Next-hop reference count: 2 StatE. Local AS: 65001 AgE. 59 Task: RT Announcement bits (1): 2-KRT AS path: 65005 I user@r2# show protocols bgp group ibgp { type external; export to-bgp; neighbor 10.1.2.1 { local-address 10.1.2.2; family inet { unicast; } family inet6 { unicast; } peer-as 65005; } } user@r2# run show bgp summary Groups: 1 Peers: 1 Down peers: 0 Table Tot Paths Act Paths Suppressed History Damp State Pending inet6.0 0 0 0 0 0 0 inet.0 0 0 0 0 0 0 Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped... 10.1.2.1 65005 31 31 0 0 12:08 Establ inet6.0: 0/0/0/0 inet.0: 0/0/0/ user@r2# show policy-options policy-statement to-bgp { from protocol static; then accept; } user@r2# run show route advertising-protocol bgp 10.1.2.1 [edit] user@r2# What is the problem?

Options

  • AThe export policy is incorrect.
  • BThe static route has Next hop typE.Reject.
  • CThe export policy should be applied under the [edit protocols bgp group ibgp neighbor 10.1.2.1]
  • DAn AS path loop is detected.

How the community answered

(46 responses)
  • A
    2% (1)
  • B
    11% (5)
  • C
    4% (2)
  • D
    83% (38)

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