Regarding the description of GRE VPN tunnel configuration, which of the following options are correct? (Multiple Choice)

The correct answer is A. The tunnel interface numbers of the devices at both ends must be consistent. B. The tunnel address must be reachable at the network layer C. The tunnel interface must be configured with an IP address D. The tunnel interface must be added to the security zone. See the full explanation below for the reasoning.

Question

Regarding the description of GRE VPN tunnel configuration, which of the following options are correct? (Multiple Choice)

Options

AThe tunnel interface numbers of the devices at both ends must be consistent.
BThe tunnel address must be reachable at the network layer
CThe tunnel interface must be configured with an IP address
DThe tunnel interface must be added to the security zone

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(31 responses)

A
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