1a2f04351SSebastien Roy.\" 2a2f04351SSebastien Roy.\" CDDL HEADER START 3a2f04351SSebastien Roy.\" 4a2f04351SSebastien Roy.\" This file and its contents are supplied under the terms of the 5a2f04351SSebastien Roy.\" Common Development and Distribution License ("CDDL"), version 1.0. 6a2f04351SSebastien Roy.\" You may only use this file in accordance with the terms of version 7a2f04351SSebastien Roy.\" 1.0 of the CDDL. 8a2f04351SSebastien Roy.\" 9a2f04351SSebastien Roy.\" A full copy of the text of the CDDL should have accompanied this 10a2f04351SSebastien Roy.\" source. A copy of the CDDL is also available via the Internet at 11a2f04351SSebastien Roy.\" http://www.illumos.org/license/CDDL. 12a2f04351SSebastien Roy.\" 13a2f04351SSebastien Roy.\" CDDL HEADER END 14a2f04351SSebastien Roy.\" 15a2f04351SSebastien Roy.\" 16a2f04351SSebastien Roy.\" Copyright (c) 2016 by Delphix. All rights reserved. 17a2f04351SSebastien Roy.\" 18*11845c32SPeter Tribble.Dd March 10, 2023 19bbf21555SRichard Lowe.Dt CONNSTAT 8 20a2f04351SSebastien Roy.Os 21a2f04351SSebastien Roy.Sh NAME 22a2f04351SSebastien Roy.Nm connstat 23a2f04351SSebastien Roy.Nd report TCP connection statistics 24a2f04351SSebastien Roy.Sh SYNOPSIS 25a2f04351SSebastien Roy.Nm 26a2f04351SSebastien Roy.Op Fl eLP 27a2f04351SSebastien Roy.Op Fl 4 Ns | Ns Fl 6 28a2f04351SSebastien Roy.Op Fl T Sy d Ns | Ns Sy u 29a2f04351SSebastien Roy.Op Fl F Ar filter 30a2f04351SSebastien Roy.Op Fl i Ar interval 31a2f04351SSebastien Roy.Op Fl c Ar count 32a2f04351SSebastien Roy.Op Fl o Ar field Ns Oo , Ns Ar field Oc Ns ... 33a2f04351SSebastien Roy.Sh DESCRIPTION 34a2f04351SSebastien RoyThe 35a2f04351SSebastien Roy.Nm 36a2f04351SSebastien Roycommand reports TCP connection statistics in tabular form. 37a2f04351SSebastien RoyEach row of the table represents the activity of one connection. 38a2f04351SSebastien RoyThe 39a2f04351SSebastien Roy.Nm 40a2f04351SSebastien Roycommand adds virtually no overhead to run as it is aggregating statistics that 41a2f04351SSebastien Royare always collected in the kernel. 42a2f04351SSebastien Roy.Pp 43a2f04351SSebastien RoyWith no arguments, 44a2f04351SSebastien Roy.Nm 45a2f04351SSebastien Royprints a single report containing all TCP connections, and includes a basic 46a2f04351SSebastien Royset of fields representing IP address and port information, as well as connection 47a2f04351SSebastien Roystate. 48a2f04351SSebastien RoyThe 49a2f04351SSebastien Roy.Fl o 50a2f04351SSebastien Royflag can be used to specify which fields to display, and other arguments to 51a2f04351SSebastien Royfilter the set of connections included in the output. 52a2f04351SSebastien Roy.Sh OPTIONS 53a2f04351SSebastien RoyThe arguments are as follows: 54a2f04351SSebastien Roy.Bl -tag -width "" 55a2f04351SSebastien Roy.It Fl 4 , Fl -ipv4 56a2f04351SSebastien RoyOnly displays IPv4 connections. 57a2f04351SSebastien Roy.It Fl 6 , Fl -ipv6 58a2f04351SSebastien RoyOnly displays IPv6 connections 59a2f04351SSebastien Roy.It Fl c Ar count , Fl -count Ns = Ns Ar count 60a2f04351SSebastien RoyPrint a specified number of reports before exiting. 61a2f04351SSebastien RoyThis is used in conjunction with 62a2f04351SSebastien Roy.Fl i . 63a2f04351SSebastien Roy.It Fl e , Fl -established 64a2f04351SSebastien RoyOnly display connections that are in state ESTABLISHED. 65a2f04351SSebastien RoyThis is equivalent to including 66a2f04351SSebastien Roy.Sy state=ESTABLISHED 67a2f04351SSebastien Royin the filter argument to the 68a2f04351SSebastien Roy.Fl F 69a2f04351SSebastien Royoption. 70a2f04351SSebastien Roy.It Fl F Ar filter , Fl -filter Ns = Ns Ar filter 71a2f04351SSebastien RoyOnly display connections that match the filter argument provided. 72a2f04351SSebastien RoyThe format of the filter is: 73a2f04351SSebastien Roy.Pp 74a2f04351SSebastien Roy.Ar field Ns = Ns Ar value Ns Oo , Ns Ar field Ns = Ns Ar value Oc Ns ... 75a2f04351SSebastien Roy.Pp 76a2f04351SSebastien RoyFields that can currently be filtered are 77a2f04351SSebastien Roy.Ar laddr , Ar lport , Ar raddr , Ar rport , and Ar state . 78a2f04351SSebastien RoySee the 79a2f04351SSebastien Roy.Sx Fields 80a2f04351SSebastien Roysection for a description of these fields. 81a2f04351SSebastien RoyThe filter matches a connection if all of the filter elements match, and a 82a2f04351SSebastien Royfield must only appears once in the filter. 83a2f04351SSebastien Roy.It Fl i Ar interval , Fl -interval Ns = Ns Ar interval 84a2f04351SSebastien RoySpecify an output interval in seconds. 85a2f04351SSebastien RoyFor each interval, a report containing all connections appropriate given other 86a2f04351SSebastien Roycommand-line options is printed. 87a2f04351SSebastien Roy.It Fl L , Fl -no-loopback 88a2f04351SSebastien RoyExclude connections to the loopback address. 89a2f04351SSebastien Roy.It Fl o Ar fields , Fl -output Ns = Ns Ar fields 90a2f04351SSebastien RoyRestrict the output to the specified comma-delimited list of field names. 91a2f04351SSebastien RoySee the 92a2f04351SSebastien Roy.Sx Fields 93a2f04351SSebastien Roysection for information about possible fields. 94a2f04351SSebastien Roy.It Fl P , Fl -parsable 95a2f04351SSebastien RoyDisplay using a stable, machine-parsable output format. 96a2f04351SSebastien RoyThe 97a2f04351SSebastien Roy.Fl o 98a2f04351SSebastien Royflag must also be given to specify which fields to output and their order. 99a2f04351SSebastien RoyEach line of output will consist of comma-delimited (,) fields, 100*11845c32SPeter Tribbleand no header will be emitted. 101a2f04351SSebastien RoyWhen also using the 102a2f04351SSebastien Roy.Fl T 103a2f04351SSebastien Royoption, lines indicating the current time will begin with 104a2f04351SSebastien Roy.Dq "= " . 105a2f04351SSebastien RoySee 106a2f04351SSebastien Roy.Sx Example 4 107a2f04351SSebastien Royfor an example of how to process parsable output. 108a2f04351SSebastien Roy.It Fl T Sy d Ns | Ns Sy u , Fl -timestamp Ns = Ns Sy d Ns | Ns Sy u 109a2f04351SSebastien RoyPrint a timestamp before each block of output. 110a2f04351SSebastien Roy.Pp 111a2f04351SSebastien RoySpecify 112a2f04351SSebastien Roy.Sy u 113a2f04351SSebastien Royfor a printed representation of the internal representation of time (see 114a2f04351SSebastien Roy.Xr time 2 Ns ). 115a2f04351SSebastien RoySpecify 116a2f04351SSebastien Roy.Sy d 117a2f04351SSebastien Royfor standard date format (see 118a2f04351SSebastien Roy.Xr date 1 Ns ). 119a2f04351SSebastien Roy.El 120a2f04351SSebastien Roy.Ss Fields 121a2f04351SSebastien RoyThe following fields are supported. 122a2f04351SSebastien RoyField names are case insensitive. 123a2f04351SSebastien RoyUnless otherwise indicated, the values of fields that represent a count (e.g. 124a2f04351SSebastien Roybytes or segments) are cumulative since the connection was established. 125a2f04351SSebastien RoySome of these fields refer to data segments, which are segments that contain 126a2f04351SSebastien Roynon-zero amount of data. 127a2f04351SSebastien RoyAll sizes are in bytes. 128a2f04351SSebastien Roy.Bl -tag -width "inunorderbytes" 129a2f04351SSebastien Roy.It Sy cwnd 130a2f04351SSebastien RoyThe size of the local TCP congestion window at this instant. 131a2f04351SSebastien Roy.It Sy inbytes 132a2f04351SSebastien RoyThe number of data bytes received. 133a2f04351SSebastien RoyThis does not include duplicate bytes received. 134a2f04351SSebastien Roy.It Sy insegs 135a2f04351SSebastien RoyThe number of data segments received. 136a2f04351SSebastien RoyThis does not include duplicate segments received. 137a2f04351SSebastien Roy.It Sy inunorderbytes 138a2f04351SSebastien RoyThe number of data bytes that were received out of order. 139a2f04351SSebastien Roy.It Sy inunordersegs 140a2f04351SSebastien RoyThe number of data segments that were received out of order. 141a2f04351SSebastien Roy.It Sy laddr 142a2f04351SSebastien RoyThe local IP address. 143a2f04351SSebastien Roy.It Sy lport 144a2f04351SSebastien RoyThe local TCP port. 145a2f04351SSebastien Roy.It Sy mss 146a2f04351SSebastien RoyThe maximum TCP segment size for this connection. 147a2f04351SSebastien Roy.It Sy outbytes 148a2f04351SSebastien RoyThe number of data bytes sent. 149a2f04351SSebastien RoyThis does not include retransmitted bytes counted by 150a2f04351SSebastien Roy.Sy retransbytes . 151a2f04351SSebastien Roy.It Sy outsegs 152a2f04351SSebastien RoyThe number of data segments sent. 153a2f04351SSebastien RoyThis does not include segments containing retransmitted bytes counted by 154a2f04351SSebastien Roy.Sy retranssegs . 155a2f04351SSebastien Roy.It Sy raddr 156a2f04351SSebastien RoyThe remote IP address. 157a2f04351SSebastien Roy.It Sy retransbytes 158a2f04351SSebastien RoyThe number of data bytes retransmitted. 159a2f04351SSebastien Roy.It Sy retranssegs 160a2f04351SSebastien RoyThe number of data segments sent that contained retransmitted bytes. 161a2f04351SSebastien Roy.It Sy rport 162a2f04351SSebastien RoyThe remote TCP port. 163a2f04351SSebastien Roy.It Sy rto 164a2f04351SSebastien RoyThe current retransmission timeout in milliseconds. 165a2f04351SSebastien Roy.It Sy rtt 166a2f04351SSebastien RoyThe current smoothed round-trip time to the peer in microseconds. 167a2f04351SSebastien RoyThe smoothed RTT average algorithm used is as described in RFC 6298. 168a2f04351SSebastien Roy.It Sy rttc 169a2f04351SSebastien RoyThe number of times that a round-trip sample was added to 170a2f04351SSebastien Roy.Sy rtts . 171a2f04351SSebastien RoySee 172a2f04351SSebastien Roy.Sy rtts 173a2f04351SSebastien Royfor a description of how these two fields can be used together to calculate the 174a2f04351SSebastien Royaverage round-trip over a given period. 175a2f04351SSebastien Roy.It Sy rtts 176a2f04351SSebastien RoyThe sum of all round-trip samples taken over the lifetime of the connection in 177a2f04351SSebastien Roymicroseconds. 178a2f04351SSebastien RoyEach time TCP updates the value of 179a2f04351SSebastien Roy.Sy rtt 180a2f04351SSebastien Roywith a new sample, that sample's value is added to 181a2f04351SSebastien Roy.Sy rtts . 182a2f04351SSebastien RoyTo calculate the average round-trip over a given period (e.g. between T1 and T2), 183a2f04351SSebastien Roytake samples of 184a2f04351SSebastien Roy.Sy rtts 185a2f04351SSebastien Royand 186a2f04351SSebastien Roy.Sy rttc 187a2f04351SSebastien Royat T1 and T2, and calculate 188a2f04351SSebastien Roy.br 189a2f04351SSebastien Roy(( 190a2f04351SSebastien Roy.Sy rtts Ns 191a2f04351SSebastien Roy_T2 - 192a2f04351SSebastien Roy.Sy rtts Ns 193a2f04351SSebastien Roy_T1 ) / ( 194a2f04351SSebastien Roy.Sy rttc Ns 195a2f04351SSebastien Roy_T2 - 196a2f04351SSebastien Roy.Sy rttc Ns 197a2f04351SSebastien Roy_T1 )). 198a2f04351SSebastien Roy.br 199a2f04351SSebastien RoySee 200a2f04351SSebastien Roy.Sx Example 4 201a2f04351SSebastien Royfor an example of how this can be done programmatically from a shell script. 202a2f04351SSebastien Roy.It Sy rwnd 203a2f04351SSebastien RoyThe size of the local TCP receive window at this instant. 204a2f04351SSebastien Roy.It Sy state 205a2f04351SSebastien RoyThe TCP connection state. 206a2f04351SSebastien RoyPossible values are: 207a2f04351SSebastien Roy.Bl -tag -width "SYN_RECEIVED" 208a2f04351SSebastien Roy.It Sy BOUND 209a2f04351SSebastien RoyBound, ready to connect or listen. 210a2f04351SSebastien Roy.It Sy CLOSED 211a2f04351SSebastien RoyClosed. 212a2f04351SSebastien RoyThe local endpoint (e.g. socket) is not being used. 213a2f04351SSebastien Roy.It Sy CLOSING 214a2f04351SSebastien RoyClosed, but still waiting for a termination acknowledgment from the peer. 215a2f04351SSebastien Roy.It Sy CLOSE_WAIT 216a2f04351SSebastien RoyThe peer has shutdown; waiting for the local endpoint to close. 217a2f04351SSebastien Roy.It Sy ESTABLISHED 218a2f04351SSebastien RoyConnection has been established and data can be transferred. 219a2f04351SSebastien Roy.It Sy FIN_WAIT_1 220a2f04351SSebastien RoyLocal endpoint is closed, but waiting for termination acknowledgment from the 221a2f04351SSebastien Roypeer. 222a2f04351SSebastien Roy.It Sy FIN_WAIT_2 223a2f04351SSebastien RoyLocal endpoint is closed, but waiting for a termination request from the peer. 224a2f04351SSebastien Roy.It Sy IDLE 225a2f04351SSebastien RoyThe local endpoint (e.g. socket) has been opened, but is not bound. 226a2f04351SSebastien Roy.It Sy LAST_ACK 227a2f04351SSebastien RoyThe remote endpoint has terminated, and the local endpoint has sent a termination 228a2f04351SSebastien Royrequest. 229a2f04351SSebastien RoyThe acknowledgment for this request has not been received. 230a2f04351SSebastien Roy.It Sy LISTEN 231a2f04351SSebastien RoyListening for incoming connections. 232a2f04351SSebastien Roy.It Sy SYN_RECEIVED 233a2f04351SSebastien RoyInitial connection request has been received and acknowledged, and a connection 234a2f04351SSebastien Royrequest has been sent but not yet acknowledged. 235a2f04351SSebastien Roy.It Sy SYN_SENT 236a2f04351SSebastien RoyA connection establishment request has been sent but not yet acknowledged. 237a2f04351SSebastien Roy.It Sy TIME_WAIT 238a2f04351SSebastien RoyWaiting for time to pass after having sent an acknowledgment for the peer's 239a2f04351SSebastien Royconnection termination request. 240a2f04351SSebastien Roy.El 241a2f04351SSebastien Roy.Pp 242a2f04351SSebastien RoySee RFC 793 for a more complete understanding of the TCP protocol and TCP 243a2f04351SSebastien Royconnection states. 244a2f04351SSebastien Roy.It Sy suna 245a2f04351SSebastien RoyThe number of unacknowledged bytes outstanding at this instant. 246a2f04351SSebastien Roy.It Sy swnd 247a2f04351SSebastien RoyThe size of the local TCP send window (the peer's receive window) at this 248a2f04351SSebastien Royinstant. 249a2f04351SSebastien Roy.It Sy unsent 250a2f04351SSebastien RoyThe number of unsent bytes in the local TCP transmit queue at this instant. 251a2f04351SSebastien Roy.El 252a2f04351SSebastien Roy.Sh EXIT STATUS 253a2f04351SSebastien RoyThe 254a2f04351SSebastien Roy.Nm 255a2f04351SSebastien Royutility exits 0 on success, or 1 if an error occurs. 256a2f04351SSebastien Roy.Sh EXAMPLES 257a2f04351SSebastien Roy.Bl -tag -width "" 258a2f04351SSebastien Roy.It Sy Example 1 List established connections. 259a2f04351SSebastien RoyBy default, connstat lists basic connection details. 260a2f04351SSebastien RoyUsing the 261a2f04351SSebastien Roy.Fl e 262a2f04351SSebastien Royoption allows the user to get a quick glance of established connections. 263a2f04351SSebastien Roy.Bd -literal 264a2f04351SSebastien Roy$ connstat -e 265a2f04351SSebastien Roy LADDR LPORT RADDR RPORT STATE 266a2f04351SSebastien Roy 10.43.37.172 51275 172.16.105.4 389 ESTABLISHED 267a2f04351SSebastien Roy 10.43.37.172 22 172.16.98.16 62270 ESTABLISHED 268a2f04351SSebastien Roy 10.43.37.172 1020 172.16.100.162 2049 ESTABLISHED 269a2f04351SSebastien Roy 10.43.37.172 1019 10.43.11.64 2049 ESTABLISHED 270a2f04351SSebastien Roy 10.43.37.172 22 172.16.98.16 61520 ESTABLISHED 271a2f04351SSebastien Roy 10.43.37.172 80 10.43.16.132 59467 ESTABLISHED 272a2f04351SSebastien Roy.Ed 273a2f04351SSebastien Roy.It Sy Example 2 Show one connection's I/O stats every second 274a2f04351SSebastien RoyThe 275a2f04351SSebastien Roy.Fl F 276a2f04351SSebastien Royoption is used to filter a specific connection, 277a2f04351SSebastien Roy.Fl o 278a2f04351SSebastien Royis used to output specific fields, and 279a2f04351SSebastien Roy.Fl i 280a2f04351SSebastien Royto provide the output interval in seconds. 281a2f04351SSebastien Roy.Bd -literal 282a2f04351SSebastien Roy$ connstat -F lport=22,rport=49675,raddr=172.16.168.30 \e 283a2f04351SSebastien Roy -o inbytes,outbytes -i 1 284a2f04351SSebastien Roy INBYTES OUTBYTES 285a2f04351SSebastien Roy 9589 18101 286a2f04351SSebastien Roy INBYTES OUTBYTES 287a2f04351SSebastien Roy 9589 18341 288a2f04351SSebastien Roy INBYTES OUTBYTES 289a2f04351SSebastien Roy 9589 18501 290a2f04351SSebastien Roy INBYTES OUTBYTES 291a2f04351SSebastien Roy 9589 18661 292a2f04351SSebastien Roy ... 293a2f04351SSebastien Roy.Ed 294a2f04351SSebastien Roy.It Sy Example 3 Understanding the bottleneck for a given connection 295a2f04351SSebastien RoyUnderstanding the transmit bottleneck for a connection requires knowing the 296a2f04351SSebastien Roysize of the congestion window, whether the window is full, and the round-trip 297a2f04351SSebastien Roytime to the peer. 298a2f04351SSebastien RoyThe congestion window is full when 299a2f04351SSebastien Roy.Sy suna 300a2f04351SSebastien Royis equal to 301a2f04351SSebastien Roy.Sy cwnd . 302a2f04351SSebastien RoyIf the window is full, then the throughput is limited by the size of the window 303a2f04351SSebastien Royand the round-trip time. 304a2f04351SSebastien RoyIn that case, knowing these two values is critical. 305a2f04351SSebastien RoyEither the window is small because of retransmissions, or the round-trip 306a2f04351SSebastien Roylatency is high, or both. 307a2f04351SSebastien RoyIn the example below, the window is small due to high congestion or an 308a2f04351SSebastien Royunreliable network. 309a2f04351SSebastien Roy.Bd -literal 310a2f04351SSebastien Roy$ connstat -F lport=41934,rport=50001 \e 311a2f04351SSebastien Roy -o outbytes,suna,cwnd,unsent,retransbytes,rtt -T d -i 1 312a2f04351SSebastien RoyJuly 7, 2016 11:04:40 AM EDT 313a2f04351SSebastien Roy OUTBYTES SUNA CWND UNSENT RETRANSBYTES RTT 314a2f04351SSebastien Roy 1647048093 47784 47784 3017352 3701844 495 315a2f04351SSebastien RoyJuly 7, 2016 11:04:41 AM EDT 316a2f04351SSebastien Roy OUTBYTES SUNA CWND UNSENT RETRANSBYTES RTT 317a2f04351SSebastien Roy 1660720109 41992 41992 1535032 3765556 673 318a2f04351SSebastien RoyJuly 7, 2016 11:04:42 AM EDT 319a2f04351SSebastien Roy OUTBYTES SUNA CWND UNSENT RETRANSBYTES RTT 320a2f04351SSebastien Roy 1661875613 26064 26064 4311688 3829268 571 321a2f04351SSebastien RoyJuly 7, 2016 11:04:43 AM EDT 322a2f04351SSebastien Roy OUTBYTES SUNA CWND UNSENT RETRANSBYTES RTT 323a2f04351SSebastien Roy 1681478637 41992 41992 437304 3932076 1471 324a2f04351SSebastien RoyJuly 7, 2016 11:04:44 AM EDT 325a2f04351SSebastien Roy OUTBYTES SUNA CWND UNSENT RETRANSBYTES RTT 326a2f04351SSebastien Roy 1692028765 44888 44888 1945800 4014612 921 327a2f04351SSebastien Roy\&... 328a2f04351SSebastien Roy.Ed 329a2f04351SSebastien Roy.It Sy Example 4 Calculating average RTT over intervals 330a2f04351SSebastien RoyAs described in the 331a2f04351SSebastien Roy.Sx Fields 332a2f04351SSebastien Roysection, the 333a2f04351SSebastien Roy.Sy rtts 334a2f04351SSebastien Royand 335a2f04351SSebastien Roy.Sy rttc 336a2f04351SSebastien Royfields can be used to calculate average RTT over a period of time. 337a2f04351SSebastien RoyThe following example combines machine parsable output with these fields to do 338a2f04351SSebastien Roythis programmatically. 339a2f04351SSebastien RoyThe script: 340a2f04351SSebastien Roy.Bd -literal 341a2f04351SSebastien Roy#!/bin/bash 342a2f04351SSebastien Roy 343a2f04351SSebastien Royi=0 344a2f04351SSebastien Royconnstat -P -F lport=41934,rport=50001 -o rttc,rtts -i 1 | \e 345a2f04351SSebastien Roy while IFS=, read rttc[$i] rtts[$i]; do 346a2f04351SSebastien Roy if [[ $i != 0 ]]; then 347a2f04351SSebastien Roy let rtt="(${rtts[$i]} - ${rtts[$i - 1]}) / \e 348a2f04351SSebastien Roy (${rttc[$i]} - ${rttc[$i - 1]})" 349a2f04351SSebastien Roy print "avg rtt = ${rtt}us" 350a2f04351SSebastien Roy fi 351a2f04351SSebastien Roy ((i++)) 352a2f04351SSebastien Roydone 353a2f04351SSebastien Roy.Ed 354a2f04351SSebastien Roy.Pp 355a2f04351SSebastien RoyThe output: 356a2f04351SSebastien Roy.Bd -literal 357a2f04351SSebastien Roy\&... 358a2f04351SSebastien Royavg rtt = 992us 359a2f04351SSebastien Royavg rtt = 829us 360a2f04351SSebastien Royavg rtt = 712us 361a2f04351SSebastien Royavg rtt = 869us 362a2f04351SSebastien Roy\&... 363a2f04351SSebastien Roy.Ed 364a2f04351SSebastien Roy.It Sy Example 5 Show HTTP server connections in TIME_WAIT state 365a2f04351SSebastien RoyConnections accumulating in TIME_WAIT state can sometimes be an issue, as these 366a2f04351SSebastien Royconnections linger and take up port number space while their time wait timer 367a2f04351SSebastien Royis ticking. 368a2f04351SSebastien Roy.Bd -literal 369a2f04351SSebastien Roy$ connstat -F state=time_wait,lport=80 370a2f04351SSebastien Roy LADDR LPORT RADDR RPORT STATE 371a2f04351SSebastien Roy 10.43.37.172 80 172.16.168.30 56067 TIME_WAIT 372a2f04351SSebastien Roy 10.43.37.172 80 172.16.168.30 56068 TIME_WAIT 373a2f04351SSebastien Roy 10.43.37.172 80 172.16.168.30 56070 TIME_WAIT 374a2f04351SSebastien Roy.Ed 375a2f04351SSebastien Roy.El 376a2f04351SSebastien Roy.Sh INTERFACE STABILITY 377a2f04351SSebastien RoyThe command line options for this command are stable, but the output format 378a2f04351SSebastien Roywhen not using the 379a2f04351SSebastien Roy.Fl P 380a2f04351SSebastien Royoption and diagnostic messages are not. 381a2f04351SSebastien Roy.Sh SEE ALSO 382bbf21555SRichard Lowe.Xr netstat 8 383a2f04351SSebastien Roy.Rs 384a2f04351SSebastien Roy.%A J. Postel 385a2f04351SSebastien Roy.%B Transmission Control Protocol, STD 7, RFC 793 386a2f04351SSebastien Roy.%D September 1981 387a2f04351SSebastien Roy.Re 388a2f04351SSebastien Roy.Rs 389a2f04351SSebastien Roy.%A V. Paxson 390a2f04351SSebastien Roy.%A M. Allman 391a2f04351SSebastien Roy.%A J. Chu 392a2f04351SSebastien Roy.%A M. Sargent 393a2f04351SSebastien Roy.%B Computing TCP's Retransmission Timer, RFC 6298 394a2f04351SSebastien Roy.%D June 2011 395a2f04351SSebastien Roy.Re 396