Microsoft ES4649 Manuale Utente

IP Routing

3-221

3

TCP Statistics

The Transmission Control Protocol (TCP) provides highly reliable host-to-host 
connections in packet-switched networks, and is used in conjunction with IP to 
support a wide variety of Internet protocols. 

Web - Click IP, Statistics, TCP.

Figure 3-128   TCP Statistics

CLI - See the example on page 3-215.

Table 3-21   TCP Statistics

Parameter

Description

Segments Received

The total number of segments received, including those received in error. 

This count includes segments received on currently established 

connections.

Segments Sent

The total number of segments sent, including those on current 

connections but excluding those containing only retransmitted octets.

Active Opens

The number of times TCP connections have made a direct transition to the 

SYN-SENT state from the CLOSED state.

Failed Connection Attempts

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.

Current Connections

The number of TCP connections for which the current state is either 

ESTABLISHED or CLOSE- WAIT.

Receive Errors

The total number of segments received in error (e.g., bad TCP 

checksums).

Segments Retransmitted

The total number of segments retransmitted - that is, the number of TCP 

segments transmitted containing one or more previously transmitted 

octets.

Passive Opens

The number of times TCP connections have made a direct transition to the 

SYN-RCVD state from the LISTEN state.

Reset Connections

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.