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

By Cisco · Question Mode

QuestionQ528

VPN Technologies

IPv6 is enabled in the infrastructure to support customers using an IPv6 network across the WAN and to connect the head office to branch offices on the local network.

One customer is already running IPv6 and wants to enable IPv6 across the DMVPN network infrastructure between the headend and branch sites.

Which configuration command must be applied to establish an mGRE IPv6 tunnel neighborship?

  • A ipv6 nhrp holdtime 30
  • B tunnel mode gre multipoint ipv6
  • C ipv6 unicast-routing
  • D tunnel protection mode ipv6
Explanation

tunnel mode gre multipoint ipv6 sets a tunnel interface’s encapsulation mode to multipoint GRE over IPv6, enabling the mGRE IPv6 tunnel used by DMVPN. ipv6 nhrp holdtime only sets NHRP entry validity, while ipv6 unicast-routing enables IPv6 forwarding globally.

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