Command introduced before JUNOS Release 7.4.
sfc option introduced for the TX Matrix Plus router in JUNOS Release 9.6.
Display system-wide Transmission Control Protocol (TCP) statistics.
all-chassis — (TX Matrix and TX Matrix Plus routers only) (Optional) Display system statistics for TCP for all the routers in the chassis.
all-lcc — (TX Matrix and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display system statistics for TCP for all T640 routers (or line-card chassis) connected to the TX Matrix router. On a TX Matrix Plus router, display system statistics for TCP for all T1600 routers (or line-card chassis) connected to the TX Matrix Plus router.
lcc number — (TX Matrix and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display system statistics for TCP for a specific T640 router that is connected to the TX Matrix router. On a TX Matrix Plus router, display system statistics for TCP for a specific T1600 router that is connected to the TX Matrix Plus router. Replace number with a value from 0 through 3.
scc — (TX Matrix routers only) (Optional) Display system statistics for TCP for the TX Matrix router (or switch-card chassis).
sfc number — (TX Matrix Plus routers only) (Optional) Display system statistics for TCP for the TX Matrix Plus router (or switch-fabric chassis). Replace number with 0.
By default, when you issue the show system statistics tcp command on a TX Matrix or TX Matrix Plus master Routing Engine, the command is broadcast to all the T640 (in a routing matrix based on a TX Matrix router) or T1600 (in a routing matrix based on a TX Matrix Plus router) master Routing Engines connected to it. Likewise, if you issue the same command on the TX Matrix or TX Matrix Plus backup Routing Engine, the command is broadcast to all the T640 (in a routing matrix based on a TX Matrix router) or T1600 (in a routing matrix based on a TX Matrix Plus router) backup Routing Engines that are connected to it.
view
Output field descriptions to be provided.
user@host> show system statistics tcp tcp:
3844 packets sent
3618 data packets (1055596 bytes)
0 data packets (0 bytes) retransmitted
0 resends initiated by MTU discovery
205 ack-only packets (148 packets delayed)
0 URG only packets
0 window probe packets
0 window update packets
1079 control packets
5815 packets received
3377 acks (for 1055657 bytes)
24 duplicate acks
0 acks for unsent data
2655 packets (15004 bytes) received in-sequence
1 completely duplicate packet (0 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
0 out-of-order packets (0 bytes)
0 packets (0 bytes) of data after window
0 window probes
7 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
1 connection request
32 connection accepts
0 bad connection attempts
0 listen queue overflows
33 connections established (including accepts)
30 connections closed (including 0 drops)
27 connections updated cached RTT on close
27 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
0 embryonic connections dropped
3374 segments updated rtt (of 3220 attempts)
0 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts
0 connections dropped by persist timeout
344 keepalive timeouts
0 keepalive probes sent
0 connections dropped by keepalive
1096 correct ACK header predictions
1314 correct data packet header predictions
32 syncache entries added
0 retransmitted
0 dupsyn
0 dropped
32 completed
0 bucket overflow
0 cache overflow
0 reset
0 stale
0 aborted
0 badack
0 unreach
0 zone failures
0 cookies sent
0 cookies received
0 ACKs sent in response to in-window but not exact RSTs
0 ACKs sent in response to in-window SYNs on established connections
0 rcv packets dropped by TCP due to bad address
0 out-of-sequence segment drops due to insufficient memory
1058 RST packets
0 ICMP packets ignored by TCP
0 send packets dropped by TCP due to auth errors
0 rcv packets dropped by TCP due to auth errors
show system statistics tcp lcc (TX Matrix Router)
user@host> show system statistics tcp lcc 2 lcc2-re0:
--------------------------------------------------------------------------
tcp:
21271 packets sent
11069 data packets (12044 bytes)
0 data packets (0 bytes) retransmitted
0 resends initiated by MTU discovery
10198 ack-only packets (10194 packets delayed)
0 URG only packets
0 window probe packets
0 window update packets
4 control packets
13363 packets received
11073 acks (for 12044 bytes)
0 duplicate acks
0 acks for unsent data
12895 packets (2400874 bytes) received in-sequence
0 completely duplicate packets (0 bytes)
0 old duplicate packets
0 packets with some dup. data (0 bytes duped)
0 out-of-order packets (0 bytes)
0 packets (0 bytes) of data after window
0 window probes
0 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
4 connection requests
0 connection accepts
0 bad connection attempts
0 listen queue overflows
4 connections established (including accepts)
33 connections closed (including 0 drops)
0 connections updated cached RTT on close
0 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
0 embryonic connections dropped
11073 segments updated rtt (of 11073 attempts)
0 retransmit timeouts
0 connections dropped by rexmit timeout
0 persist timeouts
0 connections dropped by persist timeout
0 keepalive timeouts
0 keepalive probes sent
0 connections dropped by keepalive
464 correct ACK header predictions
2172 correct data packet header predictions
0 ACKs sent in response to in-window but not exact RSTs
0 ACKs sent in response to in-window SYNs on established connections
0 out-of-sequence segment drops due to insufficient memory
0 RST packets
0 ICMP packets ignored by TCP
show system statistics tcp (TX Matrix Plus Router)
user@host> show system statistics tcp sfc0-re0:
--------------------------------------------------------------------------
Tcp:
10420 packets sent
10203 data packets (2374613 bytes)
0 data packets retransmitted (0 bytes)
0 resends initiated by MTU discovery
202 ack only packets (120 packets delayed)
0 URG only packets
0 window probe packets
0 window update packets
30 control packets
16635 packets received
9468 acks(for 2374674 bytes)
32 duplicate acks
0 acks for unsent data
7764 packets received in-sequence(38286 bytes)
20 completely duplicate packets(0 bytes)
0 old duplicate packets
0 packets with some duplicate data(0 bytes duped)
0 out-of-order packets(0 bytes)
0 packets of data after window(0 bytes)
0 window probes
356 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
10 connection requests
33 connection accepts
0 bad connection attempts
0 listen queue overflows
34 connections established (including accepts)
50 connections closed (including 0 drops)
24 connections updated cached RTT on close
24 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
9 embryonic connections dropped
9468 segments updated rtt(of 9256 attempts)
0 retransmit timeouts
0 connections dropped by retransmit timeout
0 persist timeouts
0 connections dropped by persist timeout
14 keepalive timeouts
14 keepalive probes sent
0 connections dropped by keepalive
6220 correct ACK header predictions
6625 correct data packet header predictions
33 syncache entries added
0 retransmitted
0 dupsyn
0 dropped
33 completed
0 bucket overflow
0 cache overflow
0 reset
0 stale
0 aborted
0 badack
0 unreach
0 zone failures
0 cookies sent
0 cookies received
0 SACK recovery episodes
0 segment retransmits in SACK recovery episodes
0 byte retransmits in SACK recovery episodes
0 SACK options (SACK blocks) received
0 SACK options (SACK blocks) sent
0 SACK scoreboard overflow
0 ACKs sent in response to in-window but not exact RSTs
0 ACKs sent in response to in-window SYNs on established connections
0 rcv packets dropped by TCP due to bad address
0 out-of-sequence segment drops due to insufficient memory
15 RST packets
0 ICMP packets ignored by TCP
0 send packets dropped by TCP due to auth errors
0 rcv packets dropped by TCP due to auth errors
0 outgoing segments dropped due to policing
lcc0-re0:
--------------------------------------------------------------------------
Tcp:
1306 packets sent
1251 data packets (161855 bytes)
0 data packets retransmitted (0 bytes)
0 resends initiated by MTU discovery
51 ack only packets (1 packets delayed)
0 URG only packets
0 window probe packets
0 window update packets
6 control packets
1397 packets received
1218 acks(for 161904 bytes)
2 duplicate acks
0 acks for unsent data
612 packets received in-sequence(12495 bytes)
0 completely duplicate packets(0 bytes)
0 old duplicate packets
0 packets with some duplicate data(0 bytes duped)
0 out-of-order packets(0 bytes)
0 packets of data after window(0 bytes)
0 window probes
22 window update packets
0 packets received after close
0 discarded for bad checksums
0 discarded for bad header offset fields
0 discarded because packet too short
1 connection requests
24 connection accepts
0 bad connection attempts
0 listen queue overflows
25 connections established (including accepts)
27 connections closed (including 0 drops)
24 connections updated cached RTT on close
24 connections updated cached RTT variance on close
0 connections updated cached ssthresh on close
0 embryonic connections dropped
1218 segments updated rtt(of 1192 attempts)
0 retransmit timeouts
0 connections dropped by retransmit timeout
0 persist timeouts
0 connections dropped by persist timeout
0 keepalive timeouts
0 keepalive probes sent
0 connections dropped by keepalive
196 correct ACK header predictions
119 correct data packet header predictions
24 syncache entries added
0 retransmitted
0 dupsyn
0 dropped
24 completed
0 bucket overflow
0 cache overflow
0 reset
0 stale
0 aborted
0 badack
0 unreach
0 zone failures
0 cookies sent
0 cookies received
0 SACK recovery episodes
0 segment retransmits in SACK recovery episodes
0 byte retransmits in SACK recovery episodes
0 SACK options (SACK blocks) received
0 SACK options (SACK blocks) sent
0 SACK scoreboard overflow
0 ACKs sent in response to in-window but not exact RSTs
0 ACKs sent in response to in-window SYNs on established connections
0 rcv packets dropped by TCP due to bad address
0 out-of-sequence segment drops due to insufficient memory
2 RST packets
0 ICMP packets ignored by TCP
0 send packets dropped by TCP due to auth errors
0 rcv packets dropped by TCP due to auth errors
0 outgoing segments dropped due to policing
lcc1-re0:
--------------------------------------------------------------------------
Tcp:
1118 packets sent
1066 data packets (131896 bytes)
0 data packets retransmitted (0 bytes)
0 resends initiated by MTU discovery
48 ack only packets (2 packets delayed)
0 URG only packets
0 window probe packets
0 window update packets
6 control packets
1215 packets received