Finisar Surveyor TCP Window Exceeded, Count, Data length of 128 bytes exceeds last window size

Surveyor

User’s Guide

TCP Window Exceeded

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 Overview counters of Expert View.

Expert Symptom

TCP Window Exceeded events are automatically logged as expert symptoms. The Symptom Summary 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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Problem Description:

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

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Probable Cause(s):

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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Recommended Action(s):

1.Ignore this message if the connection was just reset.

2.Upgrade the sender's TCP/IP stack.

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