title: check FCS ethernet frame CRC-32 online tools
body: <p>I'm trying to check the FCS of an ethernet frame thanks to tools on different website. </p>
  
  <p>I first used this website:
  <a href="http://depa.usst.edu.cn/chenjq/www2/software/crc/CRC_Javascript/CRCcalculation.htm" rel="nofollow">http://depa.usst.edu.cn/chenjq/www2/software/crc/CRC_Javascript/CRCcalculation.htm</a> and find the next FCS : 0xD4C3C62F (the frame below)</p>
  
  <p>Then, I tried this one : <a href="http://www.scadacore.com/field-applications/programming-calculators/online-checksum-calculator/" rel="nofollow">http://www.scadacore.com/field-applications/programming-calculators/online-checksum-calculator/</a> and I found the correct CRC : 0x7AD56BB3 but nothing of the different kind of CRC-32 (normal, reversed...) correspond to the CRC find on the first website.</p>
  
  <p>Is there any link between algorithms? </p>
  
  <p>Thank you!</p>
  
  <p>Here is the hexadecimal frame (no start of frame) :
  000AE6F005A3001234567890080045000030B3FE0000801172BA0A0000030A00000204000400001C894D000102030405060708090A0B0C0D0E0F10111213</p>