I can set the ethernet port MTU to a maximum 9000 however
I can set the wireless radio MTU to a maximum 1630 only and the largest pace size to pass across the radio will be 1602.
Is there any MTU limitation for radio?
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Ethernet (IEEE 802.3) and Wi-Fi (IEEE 802.11) are two completely separate layer-1/2 protocols. Don't make the mistake of confusing them.
There is no real defined standard for ethernet jumbo frames, they are sort of a kludge and may not work from vendor to vendor.
Wi-Fi has specific, strict, interoperability testing by the Wi-Fi Alliance. There are no jumbo frames for Wi-Fi, although Wi-Fi frame payloads (2312 octets) can be larger than standard ethernet frame payloads (1500 octets). Wi-Fi is also required to regularly yield the airwaves because it is a shared medium. Wi-Fi must even yield to completely different Wi-Fi, or other, networks on the same frequency. Having jumbo frames would disrupt the timing of this but requiring a use of the frequency longer than should be allowed.
One problem you can run into with Wi-Fi is frame payloads can be larger than the standard ethernet payload. Most traffic originating on Wi-Fi will need to get to ethernet at some point. WAPs are translating bridges, whereas ethernet switches are transparent switches. WAPs need to translate Wi-Fi frames into ethernet frames for those frames destined for a wired network. Any frames with payloads larger than what the ethernet side of the WAP can handle must be dropped.