Juniper
JN0-351 · Question #56
Which statement is correct about IP-IP tunnels?
The correct answer is A. IP-IP tunnels only support encapsulating IP traffic. "The ENCAPSULATOR does not change the inner IP header, except to decrement the TTL and it remains unchanged during its deliver to the endpoint" - only router that encapsulates the inner packet decrements its TTL - during transit, the inner packet is unchanged.
Tunnels
Question
Which statement is correct about IP-IP tunnels?
Options
- AIP-IP tunnels only support encapsulating IP traffic.
- BIP-IP tunnels only support encapsulating non-IP traffic.
- CThe TTL in the inner packet is decremented during transit to the tunnel endpoint.
- DThere are 24 bytes of overhead with IP-IP encapsulation.
How the community answered
(23 responses)- A74% (17)
- B9% (2)
- C13% (3)
- D4% (1)
Explanation
"The ENCAPSULATOR does not change the inner IP header, except to decrement the TTL and it remains unchanged during its deliver to the endpoint" - only router that encapsulates the inner packet decrements its TTL - during transit, the inner packet is unchanged.
Topics
#IP-IP tunnel#encapsulation#IP traffic only#tunnel overhead
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