CCNP 350-401 ENCOR Question 238 DISCUSSION
« Back to Main MenuMTU has been configured on the underlying physical topology, and no MTU command has been configured on the tunnel interfaces.
What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF bit is cleared?
A. The packet arrives on router C without fragmentation
B. The packet is discarded on router A
C. The packet is discarded on router B
D. The packet arrives on router C fragmented
MTU has been configured on the underlying physical topology, and no MTU command has been configured on the tunnel interfaces.
What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF bit is cleared?
A. The packet arrives on router C without fragmentation
B. The packet is discarded on router A
C. The packet is discarded on router B
D. The packet arrives on router C fragmented
Correct Answer: D
Max packet size that can transfer without fragmentation is 1476 (Default MTU) of GRE. Anything larger than 1476 will be fragmented or dropped (if DF-bit is set).
