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Table 3-89 Receive Maximum Length Register (RX_MAXLEN) Field Descriptions Bits Field Description 31-14 Reserved Reserved 13-0 RX_MAXLEN Reserved Maximum Frame Length. This field determines the maximum length of a received frame. The reset value is 1518 (dec). Frames with byte counts greater than RX_MAXLEN are long frames. Long frames with no errors are oversized frames. Long frames with CRC, code, or alignment error are jabber frames. The maximum value is 16,383.
在sendto( s, pBuf, i, 0, (PSA)&sin1, sizeof(sin1) );函数中， i表示的是要发送的数据包长度， 您可以尝试把i改大
