Displaying Statistics For Tcp - Lucent Technologies SLC ConnectReach User & Service Manual

SLC ConnectReach System Monitoring
Using the Statistics Command to Display System
Elements Status

Displaying Statistics for TCP

Entering the TCP
command
Example of TCP
statistics report
7-12
Issue 4 June 2002
Transport control protocol (TCP) is the transport layer protocol of the TCP/IP
stack. It enables two hosts to establish a connection and exchange streams of
data. TCP guarantees delivery of data and also guarantees that packets will be
delivered in the same order in which they were sent. All of the statistics other than
the first two refer to control packets.
At the statistics prompt, enter the TCP command to display TCP statistics. For
example:
(statistics)> TCP
The following is an example of a TCP statistics report that will be displayed on the
PC monitor screen.
TCP:
713 packet sent
290
33
221
0
0
91
80
750 packet received
303
24
0
394
5
0
33
2
2
2
5
0
0
0
data packet
data packet (28299 byte) retransmitted
ack-only packet (98 delayed)
URG only packet
window probe packet
window update packet
control packet
ack (for 113493 bytes)
duplicate ack
ack for unsent data
packet (96285 byte) received in-sequence
completely duplicate packet (725 byte)q
packet with some dup. data (0 byte duped)
out-of-order packet (15872 byte)
packet (2 bytes) of data after window
window probe
window update packet
packet received after close
discarded for bad checksum
discarded for bad header offset field
discarded because packet too short
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