9-31
Cisco Aironet 1200 Series Access Point Software Configuration Guide
OL-2159-01
Chapter 9 Diagnostics and Troubleshooting
Using Command-Line Diagnostics
:vxdiag_tcpstatshow
Use the :vxdiag_tcpstatshow command to display Transmission Control Protocol
(TCP) statistics for the access point. The TCP statistics might look like this
example:
TCP:
3370 packets sent
1576 data packets (714752 bytes)
3 data packets (1613 bytes) retransmitted
1252 ack-only packets (1 delayed)
0 URG only packet
1 window probe packet
0 window update packet
538 control packets
3327 packets received
1564 acks (for 710621 bytes)
23 duplicate acks
0 ack for unsent data
824 packets (189251 bytes) received in-sequence
8 completely duplicate packets (2562 bytes)
0 packet with some dup. data (0 byte duped)
74 out-of-order packets (0 byte)
0 packet (0 byte) of data after window
0 window probe
85 window update packets
0 packet received after close
0 discarded for bad checksum
0 discarded for bad header offset field
0 discarded because packet too short
63 connection requests
415 connection accepts
477 connections established (including accepts)
477 connections closed (including 410 drops)
0 embryonic connection dropped
1378 segments updated rtt (of 1399 attempts)
2 retransmit timeouts
0 connection dropped by rexmit timeout
1 persist timeout
0 keepalive timeout
0 keepalive probe sent
0 connection dropped by keepalive
63 pcb cache lookups failed
Follow the steps in the “Entering Diagnostic Commands” section on page 9-20 to
open the CLI and enter the :vxdiag_tcpstatshow command.
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