The Connection History report shows connection counts for a variety of connection types for the time period specified.

This report includes IPv6 and packet-mode optimized traffic.

The Connection History report contains these statistics that summarize connection activity:

Displays the total connections, including half-open, half-closed (where half-open and half-closed are TCP connection states), idle, established and optimized.

Displays the total active connections that are established and optimized.

Displays the total connections passed through, unoptimized.

Displays the total number of connections forwarded by the connection-forwarding neighbor managing the connection.

Displays the percentage of half-opened connections represented in the optimized connection total. A half-open connection is a TCP connection that hasn’t been fully established. Half-open connections count toward the connection count limit on the SteelHead because, at any time, they can become a fully open connection. If you’re experiencing a large number of half-opened connections, consider a more appropriately sized SteelHead.

Displays the percentage of half-closed active connections represented in the optimized connection total. Half-closed connections are connections that the SteelHead has intercepted and optimized but are in the process of being disconnected. These connections are counted toward the connection count limit on the SteelHead. Half-closed connections can remain if the client or server doesn’t close their connections cleanly. If you’re experiencing a large number of half-closed connections, consider a more appropriately sized SteelHead.

The navigator shadows the optimized series.

The Connection History report answers these questions:

Mouse over a specific data point to see what the y values and exact time stamp were in relation to peaks.

The Riverbed system reports on performance for periods up to one month. However, due to performance and disk space considerations, the display granularity decreases with time passed since the data was sampled.

For detailed information about data grouping, see About data grouping.