3 ms·
That would work only as long as the route does not change over time, and does not depend on which direction the packet is going. They probably did not want to m
by unnah 3y ago
That would work only as long as the route does not change over time, and does not depend on which direction the packet is going. They probably did not want to make that assumption in the protocol, even if it turned out to hold most of the time in practice.
- cyberax 3y agoThis process should happen continuously, with every packet sent. Then the intermediary router just needs to chop the packet to its MTU and let it travel to the destination. The destination will detect that the packet has been chopped, send the updated reflected MTU and everything would be fine. Of course, the minimal allowed MTU (say, 512 bytes) should provide enough information for the target to find the correct TCP flow to which the packet belongs. No need for out-of-band ICMP signalling or fragmentation. And in practice, topology changes happen rarely, so this should be very infrequent.