Finisar Surveyor User Manual

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Count

TCP Window Exceeded is a counter of all events where the data length of a TCP 
packet exceeds the current window size. A count of all TCP Window Exceeded 
events displays in the 

 counters of Expert View. 

Expert Symptom

TCP Window Exceeded events are automatically logged as expert symptoms. The 

 field provides information about the length of the data length 

TCP packet and the current TCP window size on the receiving end. For example:

Data length of 128 bytes exceeds last window size of 0

Diagnostic Details

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The TCP packet data size exceeds the TCP window of the receiving end.

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1. The network is overloaded so that the new window size is not acknowledged promptly.
2. There may be a problem with the sender's TCP/IP stack.

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1. Ignore this message if the connection was just reset.
2. Upgrade the sender's TCP/IP stack.