MSP432E401Y: What is the maximum size of data can send and receive through ethernet

Hello Naga,

So there's a difference between total data transfer per transaction and maximum packet size. For example, if you are configured for a 512 byte packet size you can still send 2kB or more in the same transaction over multiple packets.

With that noted, are you asking about what is the maximum size of an individual packet or what is the maximum transfer size for a transaction that may consist of multiple packets?

Also which Ethernet protocol are you using because the answer may vary depending on such?

Best Regards,

Ralph Jacobi

Dear Ralph Jacobi,

I am using UDP protocol and I want send more than 2KB in single UDP send call. what are changes need to done in configuration.

Can you provide any sample  code.

Regards,

Naga Narasimha Rao p

Dear Ralph Jacobi,

I am using NORTOS UDP example  protocol UDP_PCB, PBUF used for data send and receive. I want send more than 2KB data at single transaction.

Regards,

Naga Narasimha Rao p

Hello Naga,

I sent this post over to Charles as he is our Ethernet expert. He will be back on Monday, but he's already explained the limitations of the device in this prior post.

Best Regards,

Ralph Jacobi

Hi,

  If you are asking from the UDP protocol perspective, I think this link has the discussion.  

https://stackoverflow.com/questions/1098897/what-is-the-largest-safe-udp-packet-size-on-the-internet

As for Ethernet MTU size, it is 1500 bytes if not jumbo frames. 

https://library.netapp.com/ecmdocs/ECMP1155586/html/GUID-E29F791E-4AD5-4EB1-AC22-78A7B25783AC.html