routing & conversion between 2 networks using different packet sizes (1500 & 9000 bytes)

Linux Advanced Routing and Traffic Control

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My computers and switches handle 9k jumbo packets and file transfers go faster between 2 computers using them, however, ran into a slight snag -- IOT (Internet of Things): things like media devices, TV, receiver, disc player -- all talk ethernet
@ 1.5k packet size.

So I'm wondering, if I setup the devices on a separate subnet and route traffic from my desktop into my server, and have a route to the devices that uses 1.5k packets, will the networking stack automatically marshal the 9k into 1.5k packets for data that gets sent to the 1.5k subnet? I'm guessing it won't automatically do the reverse, but that's not so important, since sending 1.5k packets to a 9k destination will just use the smaller packets -- its only when I send from a 9k packet enabled network port to a 1.5k-talking device that I think problems occur (occasional random data loss and connection resets). Does it sound like that would work?

I currently have a bridge on the server between 2 networks, one w/9k packets and the other with 1.5k packets and that seems to work fine -- I'm hoping that's not a coincidence(?)

Thanks!






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