Viewing Chassis TCP Statistics

View TCP statistics to monitor network performance.

Procedure

  1. In the Device Physical View, select the chassis.
  2. In the navigation pane, expand the Configuration > Graph folders.
  3. Click Chassis.
  4. Click the TCP tab.

TCP Field Descriptions

The following table describes parameters on the TCP tab.

Name

Description

ActiveOpens

The number of times TCP connections made a direct transition to the SYN-SENT state from the CLOSED state.

PassiveOpens

The number of times TCP connections made a direct transition to the SYN-RCVD state from the LISTEN state.

AttemptFails

The number of times TCP connections 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 made a direct transition to the LISTEN state from the SYN-RCVD state.

EstabResets

The number of times TCP connections made a direct transition to the CLOSED state from either the ESTABLISHED state or the CLOSE-WAIT state.

CurrEstab

The number of TCP connections for which the current state is either ESTABLISHED or CLOSE-WAIT.

InSegs

The number of segments received, including those received in error. This count includes segments received on currently established connections.

OutSegs

The number of segments sent, including those on current connections, but excluding those containing only retransmitted octets.

RetransSegs

The number of segments retransmitted that is, the number of TCP segments transmitted containing one or more previously transmitted octets.

InErrs

The number of segments received in error (for example, bad TCP checksums).

OutRsts

The number of TCP segments sent containing the RST flag.

HCInSegs

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

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.