Which of the following features belong to the Generic Routing Encapsulation (GRE)
tunneling protocol? Each correct answer represents a complete solution. Choose all that apply.
A.
GRE provides explicit protection against recursive encapsulation.
B.
GRE tunnels are designed to be completely stateful.
C.
GRE provides implicit protection against recursive encapsulation.
D.
GRE supports multiprotocol tunneling.
E.
GRE is used for creating a virtual point-to-point link.
F.
GRE tunnels are designed to be completely stateless.
How can B and F both be correct?
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http://www.ietf.org/rfc/rfc2406.txt – doesn’t say
http://searchenterprisewan.techtarget.com/definition/Generic-routing-encapsulation-GRE – this says STATELESS
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http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/64565-gre-tunnel-keepalive.html
STATELESS : not stateful
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Stateless
GRE Tunnels
GRE tunnels are designed to be completely stateless. This means that each tunnel end-point does not keep any information about the state or availability of the remote tunnel end-point
http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/64565-gre-tunnel-keepalive.html
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