The Packet Loss Percentage view shows the percentage of data lost on the monitored network and the loss rate in packets per second.
The monitoring device calculates Packet Loss Percentage by observing the ratio of retransmitted data to total data within the network from its vantage point next to the server. The monitoring device can see packets retransmitted by the server because of data losses in the server-to-client direction along the network path. When data loss occurs in the client-to-server direction (in the network path before reaching the server, for example), the monitoring device cannot observe such packet loss and that delay is not included in the Packet Loss Percentage.
Look for the following in this view.
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Look for |
Might Indicate |
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Concurrent values greater than 1%. |
High data loss. |
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The view shows only packet loss while the data table shows packet and byte loss. |
Packet loss causes the data to be retransmitted, which causes TCP to decrease the window size, which slows the transfer time of subsequent packets. Retransmitted packets increase the load on the network infrastructure. Retransmitted bytes indicate the amount of bandwidth taken up by the retransmitted data. |
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