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Zero Byte Data as Acknowledgement - Is this normal

All,

I'm getting a bunch of retransmits on a MATIP based IP protocol environment. Is this normal?! I've included a Sniffer trace of the subset of data on this communication path.

Thanks,

Scott.

2 REPLIES
New Member

Re: Zero Byte Data as Acknowledgement - Is this normal

Please note that the "retransmitted" packets are probably just TCP keepalives (ACKs) coming from the host, but for some reason have data consisting of zeros. Sniffer sees them as retransmitted data frames because they contain data, and the sequence number remains the same. Is it normal for TCP keepalives to contain data? If so, would this not affect the receiver performance since the data would go up to the application layer as garbage data?

New Member

Re: Zero Byte Data as Acknowledgement - Is this normal

Just to add to this previous topic, please note carefully on the timing, as the ACK packets sometimes are 45 seconds later. Somehow I'm sure this 45 seconds has some significance that clarification of why would be helpful

Thanks Again!

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