300-410 Question 109

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose A4

  We need to disable split-horizon on DMVPN hubs. Split-horizon is a loop-prevention mechanism in EIGRP that works by not allowing a route to be advertised out from the same interface it was learned on. The problem is that in a DMVPN setup, the hub will need to learn and send out routes from the same tunnel interface. So we have to disable it.

• 1

  As Surfside92 is saying Chicago is the HUB spoke, cause of the split horizon rule of eigrp you cannot advertise a prefix that you received in the same interface, so for disabling that we need to disable the split horizon rule

• 2

  A is correct