Refer to the exhibit. The indicated configuration was applied to a Cisco switch Switch_A located in the Los Angeles DC data center; however, Switch_A fails to establish OTV connectivity to Cisco…

Question

Exhibit

Options

• Aotv extend-vlan 101-111
• Botv isis authentication-type md5
• Cotv isis authentication-check
• Dotv join-interface vlan 101-111

• A
  76% (32)
• B
  7% (3)
• C
  5% (2)
• D
  12% (5)

Explanation

Overlay Transport Virtualization (OTV) allows Layer 2 extension across Layer 3 infrastructures. To operate, OTV requires three fundamental components on the overlay interface: Join interface - used to reach the OTV control plane over L3 (already configured: otv join- interface g1/0). Control-group multicast address ?for control-plane advertisement (already configured: otv control- group 224.1.1.1). Extended VLAN list ?specifies which VLANs will be transported through the OTV overlay. The configuration shown in the exhibit includes the join-interface, control-group, and data-group, but it does NOT specify which VLANs should be extended. Without the otv extend-vlan command, OTV will form the overlay interface but will not forward any Layer 2 information, preventing adjacency and MAC distribution between sites. In OTV, the command required to activate VLANs for transport is: otv extend-vlan <vlan-range> This enables the VLANs (such as 101?11) to be carried across the OTV overlay, completing the configuration and establishing connectivity.

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