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3Com Switch 7750 Series
Command Reference Guide — IP / IPX
Chapter 2 IP Performance Configuration
Commands
2-8
Example
# View the statistics about TCP packets.
<3Com> display tcp statistics
Received packets:
Total: 753
packets in sequence: 412 (11032 bytes)
window probe packets: 0, window update packets: 0
checksum error: 0, offset error: 0, short error: 0
duplicate packets: 4 (88 bytes), partially duplicate packets: 5 (7 bytes)
out-of-order packets: 0 (0 bytes)
packets of data after window: 0 (0 bytes)
packets received after close: 0
ACK packets: 481 (8776 bytes)
duplicate ACK packets: 7, too much ACK packets: 0
Sent packets:
Total: 665
urgent packets: 0
control packets: 5 (including 1 RST)
window probe packets: 0, window update packets: 2
data packets: 618 (8770 bytes) data packets retransmitted: 0 (0 bytes)
ACK-only packets: 40 (28 delayed)
Retransmitted timeout: 0, connections dropped in retransmitted timeout: 0
Keepalive timeout: 0, keepalive probe: 0, Keepalive timeout, so connections
disconnected : 0
Initiated connections: 0, accepted connections: 0, established connections:
0
Closed connections: 0 (dropped: 0, initiated dropped: 0)
Packets dropped with MD5 authentication: 0
Packets permitted with MD5 authentication: 0
Table 2-6 Description on the fields of the display tcp statistics command
Field Description
Total Total number of received packets
packets in sequence Number of packets in sequence
Received packets
window probe packets/
window update
packets
Number of window probe
packets/number of window update
packets