Reassembly

• Reassembly only at the final destination

• Partial datagrams are discarded after a timeout

• Fragments can be further fragmented along the path. Subfragments have a format similar to fragments.

• Minimum MTU along a path ? Path MTU

Net 1MTU=1500

Net 3MTU=1500

R2

S

D

Net 2MTU=1000

R1

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