3.1.5.2.2 Sending PEAP Packet with packet size more than MaxSendPacketSize
If isFragmentationAllowed is TRUE and the PEAP phase 2 is in progress, then fragment the packet and send the first fragment (L and M bit set). After receiving a PEAP Fragment Acknowledgement packet (section 2.2.3) response (server) or request (peer), send the next fragment (M bit set and L bit not set). Continue sending the fragments until the last fragment (L and M bits not set).
If isFragmentationAllowed is FALSE and the PEAP phase 2 is in progress, then the packet is ignored.