# Graphing the TCP tab using EDM

Use the following procedure to view read-only information about TCP activity on the switch.

## Procedure steps

1. From the navigation tree, double-click Graph.

2. In the Graph tree, double-click Chassis.

3. In the work area, click the TCP tab to view the information about TCP activity on the switch.

## Variable definitions

The following table describes the fields of TCP tab.

Field | Description
--- | ---
ActiveOpens | Indicates the number of times TCP connections have made a direct transition to the SYN-SENT state from the CLOSED state.
PassiveOpens | Indicates the number of times TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN state.
AttemptFails | Indicates the number of times TCP connections have made a direct transition to the CLOSED state from either the SYN-SENT state or the SYN-RCVD state, plus the number of times TCP connections have made a direct transition to the LISTEN state from the SYN-RCVD state.
EstabResets | Indicates the number of times TCP connections have made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.
CurrEstab | Indicates the number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.
InSegs | Indicates the total number of segments received, including those received in error. This count includes segments received on currently established connections.
OutSegs | Indicates the total number of segments sent, including those on current connections but excluding those containing only retransmitted octets.
RetransSegs | Indicates the total number of segments retransmitted — that is, the number of TCP segments transmitted containing one or more previously transmitted octets.
InErrs | Indicates the total number of segments received in error (for example, bad TCP checksums).
OutRsts | Indicates the number of TCP segments sent containing the RST flag.
HCInSegs | Indicates the number of segments received, including those received in error. This count includes segments received on currently established connections. This object is the 64-bit equivalent of InSegs.
HCOutSegs | Indicates the number of segments sent, including those on current connections, but excluding those containing only retransmitted octets. This object is the 64-bit equivalent of OutSegs.