Cabletron Systems 3Com manual Miscellaneous, Statistics window, select Main Menu→Misc Statistics

Miscellaneous Statistics 39

Miscellaneous	The AP keeps statistics on WNMP and SNMP packets, filtering violations, and serial
Statistics	port use in the Miscellaneous Statistics window. to display the Misc System
	Statistics window, select Main Menu→Misc Statistics.
	Type	Name	Definition
	WNMP	Echoes	Echo requests received by the AP.
		Pings	Ping requests received by the AP.
		Passthrough Echoes	Echoes for wireless clients associated with
			the AP.
	SNMP	Requests	Configuration requests received from the
			SNMP manager.
		Traps	AP messages sent to the SNMP manager.
	Filter	ACL Violations	Attempts by wireless client(s) not in ACL list
			to associate with this AP.
		Address	Packets discarded by address filter.
		Type	Packets discarded by type filter.
	Modem	Number of Dialouts	Dial-out attempts by the AP.
		Dialout Failures	Dial-out failures by the AP.
		Number of Answers	Answer attempts by the AP.
		Current Call Time	Current connection session length, in
			seconds.
		Last Call Time	Last connection session length, in seconds.

Select Refresh or press the F1 key to update the values manually. Select Timed or press the F2 key to have the AP automatically update the display every two seconds.

Press Esc or Previous [F4] to exit.

Analyzing Retries The AP keeps statistics of packets with multiple retries. Use these statistics to identify severe occurrences of retries. Retries occur when the transmitting station fails to receive an acknowledgment for a transmitted packet. This lack of acknowledgment can result from:

■Two or more stations transmitting simultaneously and causing collisions

■The receiving station moving out of range

■The receiving station being powered off.

Any one of these incidents causes both devices to suspend transmitting and retry later. Too many retries can indicate a system problem.

To view retry severity, do the following:

1Select Statistics from the Main Menu.

2Select Retry Histogram. The display indicates the packets that experience retries (up to 15 retries).

3Press any key to return to the Main Menu.