300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

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QuestionQ426

VPN Technologies

Which two prerequisites are required to set up a DMVPN tunnel?

Choose two
  • A Before a multipoint GRE (mGRE) and IPsec tunnel can be established, define an Internet Key Exchange (IKE) policy by using the crypto isakmp policy command.
  • B The Public IP’s of the routers should be able to ping each other.
  • C To enable 2547oDMPVN - Traffic Segmentation Within DMVPN configure multiprotocol label switching (MPLS) by using the mpls ip command
  • D It is mandatory to use wildcard preshared keys to build the DMVPN tunnel
  • E DMVPN can work on all OEM devices that support IKE.
Explanation

An IKE policy, configured with crypto isakmp policy, is required before an mGRE and IPsec tunnel can be established. For 2547oDMVPN traffic segmentation, MPLS must be enabled with the mpls ip command.

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