TCP OFFLOADING --- INCORRECT CHECKSUM

Issues related to configuring your network
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z_haseeb
Posts: 96
Joined: 2009/12/31 07:58:30

TCP OFFLOADING --- INCORRECT CHECKSUM

Post by z_haseeb » 2020/04/17 16:20:16

I am able to telnet on a port at remote machine. However, I am unable to send packets on a connected socket. I run the command (ethtool -k rx off tx off) and then I am able to send packets on same connected socket and then application working accurately.

My Query is, why I need to off rx and tx ?

hunter86_bg
Posts: 2016
Joined: 2015/02/17 15:14:33
Location: Bulgaria
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Re: TCP OFFLOADING --- INCORRECT CHECKSUM

Post by hunter86_bg » 2020/04/19 20:01:12

I guess some device on the path (most probably a switch) doesn't support Frame control (IEEE 802.3x) - for example being disabled from the configuration.

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