HP 9304M, 9308M 6.1.4 Latency Test – U nicast Traffic – Packets Across Backplane, 6.1.3 Latency Test - Unicast Traffic – P ackets Within the Modules

HP ProCurve Routing Switch 9308M / 9304M Reviewer’s Guide

6.1.3 Latency Test - Unicast Traffic – P ackets Within the Modules

6.1.3.1 Gigabit-SX ports Port pairs active: 64

Latency test length: 10 seconds

Port-Pair Latency in microsec (�s)

Packet size (bytes)	64	128	256	512		1024		1280	1518
Average of all ports	7.01	7.58	9.63	13.58		21.55		25.52	29.32	FIFO
	6.50	6.56	7.58	9.48		13.36		15.28	17.18	LIFO (Calculated)4
6.1.3.2 100Mbps5
Port pairs active: 188
Latency test length: 10 seconds
Port-Pair Latency in microsec (µs)
Packet size (bytes)	64	128	256		512		1024	1280	1518
Port 1 to 2										FIFO
										LIFO (Calculated)4

6.1.4 Latency Test – U nicast Traffic – Packets Across Backplane

6.1.4.1 Gigabit-SX ports Port pairs active: 64

Latency test length: 10 seconds

Port-Pair Latency in microsec (�s)

Packet size (bytes)	64	128	256	512		1024		1280	1518
Average of all ports		12.06	11.59	16.06		25.42		29.52	33.91	FIFO
		11.04	9.54	11.96		17.23		19.28	21.76	LIFO (Calculated)4
6.1.4.2 100Mbps5
Port pairs active: 188
Latency test length: 10 seconds
Port-Pair Latency in microsec (µs)
Packet size (bytes)	64	128	256		512		1024	1280	1518
Port 1 to 2										FIFO
										LIFO (Calculated)4

Technical information subject to change without notice. © Copyright 1999, Hewlett-Packard Company

4See the Latency discussion in section 3 of this guide for the LIFO calculation.

5Data not available yet.

©1999 Hewlett-Packard Company Revision 4.0 – 4/1/1999 Page: 27 of 27