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Ipv4 reassembly

Why does Ipv4 does reassembly at the end point rather than at the next router?

My guess is that to minimize fragmentation lost during the transmission. By reassembling it at the end points we can detect if there is a packet lost and therefore can ask for that lost packet to be re-transmitted again. If we do it at the next router the fragmentation becomes more complex and the chances that error happens is larger. Is this true? Any other reasons?
Networking ProtocolsNetworkingNetwork Management

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8/22/2022 - Mon