Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Ethernet roundtrip time with NicheStack & Nios-II

Hi, We are using TSE IP with NichStack, MicroC OS-II on Nios-II. FPGA is running a simple UDP host which echoes all packets it gets from client. The client is a PC running real-time OS and con...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

If you have a manageable switch somewhere and can configure one of its port as a mirror, then you can plug it between your PC and the FPGA board, and monitor that port with a second PC and Wireshark. It can seem overkill but Ethernet sniffers are great debugging tools.

Checksums on 128 bytes payload shouldn't take that long, and besides it is optional with UDP. If possible, you could try and see if you can configure the RTOS on the PC so that it doesn't generate the checksum and check if it changes anything on the round trip time.