Network Interface

The Network Interface window is splitted in two parts:

1. Aggregated Statistics

TCP Connections

Connections/s Number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.
Established Number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
Reset Number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.

TCP Segments retransmitted /sec

Rate at which segments are sent, including those on current connections, but excluding those containing only retransmitted bytes.

 

2. Per Network Interface statistics

The grid located at the middle of the window shows each individual network interface with the following information for each one:

Packets Sent/sec Rate at which packets are sent on the network interface.
Packets Received/sec Rate at which packets are received on the network interface.
KBytes Sent/sec Rate at which bytes are sent over each each network adapter, including framing characters.
KBytes Received/sec Rate at which bytes are received over each network adapter, including framing characters.
Packets Outbound Errors Number of outbound packets that could not be transmitted because of errors.
Packets Received Errors Number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
Output Queue Length Length of the output packet queue (in packets). If this is longer than two, there are delays and the bottleneck should be found and eliminated, if possible. Since the requests are queued by the Network Driver Interface Specification (NDIS) in this implementation, this will always be 0.

By default, the last snapshot is displayed in the grid. Use the slidder (or the arrow buttons) located at the top of the grid to navigate through the collected snapshots. In monitoring, the "Auto-Update" button must be unchecked to be able to navigate through the collected snapshots.

Select one or more Network Interface in the grid (Check box at the left of the grid) to update the graphes located at the bottom of the window. If several entries are selected, the statistics are aggregated.

Packets /sec

Received Rate at which packets are received on the network interface.
Sent Rate at which packets are sent on the network interface.

Packets Errors

Received Number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol.
Outbound Number of outbound packets that could not be transmitted because of errors.

Queue Length

Length of the output packet queue (in packets). If this is longer than two, there are delays and the bottleneck should be found and eliminated, if possible. Since the requests are queued by the Network Driver Interface Specification (NDIS) in this implementation, this will always be 0.

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