Lucent Technologies Comcode 108678723 manual Conserving ATM bandwidth

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000
6 Troubleshooting
Troubleshooting ATM-PNC	6-43

If an administered pnc-pair is changed, the next time measurements are gathered, the today-peakentry for the old pnc-pair is replaced with an entry for the new pair, and all counters are set to 0.

Screen 6-17 shows the output for this command.

list	measurements atm pnc-latency last-hour
Switch Name: _______________					Date: 7:23 pm		SAT MAR 21, 1998
				ATM PNC LATENCY MEASUREMENTS
		-----------A-PNC-----------					---------B-PNC----------
Orig Dest PN Connection				ATM NW Setup Hour			PN Connection		ATM NW Setup Hour
PN	PN	Count	ms	Count	ms		Count	ms	Count	ms
1	5	2200	143	2055	153	1900
1	8	1219	78	1144	83	1900
5	8	2663	220	2386	245	1900
5	7	143	105	123	122	1900
4	2	7101	326	6845	338	1900
10	11	353	54	343	56	1900
10	12	3360	76	3326	77	1900
10	1	1570	71	1547	72	1900
1	10	1570	83	1547	84	1900
8	2	1100	62	1038	66	1900

Screen 6-17. ATM-PNC latency measurements

Field descriptions

Orig PN/Dest	Identifies the originating port network and the destination port
PN	network for the measured SVCs (default is blank).
PN Count	The number of setup attempts on the port network
Connection ms	The amount of time (in milliseconds) for the connection
ATM NW Count	The number of setup attempts on the ATM network
Setup ms	The amount of time (in milliseconds) to set up the connection.
Hour	The time of the data collection.

Conserving ATM bandwidth

Port Networks in a DEFINITY ATM-PNC configuration, when used with the Lucent access concentrators or other ATM switches interfacing to bandwidth-constricted or congested facilities, can incur contention for bandwidth, resulting in failed call completions. Figure 6-4 represents a DEFINITY