100Bt Ports; Throughput Test Comments; Ip Routing (L3) Rfc 2245 Latency Test; Copper Gig Ports - HP ProCurve 5308XL-48G Supplementary Manual

TotalRxFrames
14285711648
TotalLoss(%)
0.000

100BT Ports

Port pairs active, full duplex: 192 = 19.2 Gbps data out of the tester
Test length: 3 hours
Packet size 64
(bytes)
%MaxRate
100
TotalTxFrames
308572144115
TotalRxFrames
308572144115
TotalLoss(%)
0.000

Throughput Test Comments

A fully meshed performance test sends packets from each port to every other port during the
test. This test exercises both the modules and the backplane. These tests show the ProCurve
5300xl Switch Series to be wire-speed on all ports simultaneously. The 5300 is the only chassis
in its price range that is wire-speed on all ports simultaneously at Layer 2 or Layer 3.

IP Routing (L3) RFC 2245 Latency Test

Copper Gig Ports

Port pairs active, full duplex: 32
All latencies in microseconds
Frame Size 64
AvgLatency(μs) 5.802
100BT Ports
Port pairs active, full duplex: 192
All latencies in microseconds
Frame Size 64
AvgLatency(μs) 24.36

Latency Test Comments

Latency is measured as the time it takes for a byte inside a packet to enter and then leave the
switch. This measurement includes both the processing time of the switch as it makes its
forwarding decision and the time for the packet itself to enter and leave the switch.
The latency figures for the ProCurve 5300xl Switch Series are low. Latencies this low will not be
a factor in general network operation, even with streaming video or VoIP applications.
Almost all switches currently on the market, the 5300 included, are store and forward, so the
entire packet is received into the switch before the switch starts to transmit it out the outgoing
port. The above latency figures include this packet receive time. For example, at 100Mbps it
takes 5.76 μsec for a 64 byte packet, and 122.08 μsec for a 1518 byte packet itself to move into
and out of the switch. At 1Gbps a 64 byte packet takes 576 ηseconds, while a 1518 byte packet
takes 12.208 μsec. Adding the packet receive time to the latency is proper because this extra
time is seen externally to the switch by the network and figures in to the transit time of the
packet as it moves through the network.
8108112000 4347829856 2255634400
0.000 0.000 0.000
128 256
100 100
175134177024 93913320982
175134177024 93913320982
0.000 0.000
128 256
6.746 8.085
128 256
36.26 42.38
1149426432 923077824
0.000 0.000
512 1024
100 100
48721238434 24827090688
48721238434 24827090688
0.000 0.000
512 1024
11.731 18.067
512 1024
81.44 136.46
780229824
0.000
1280 1518
100 100
19937539584 16852104
19937539584 16852104
0.000 0.000
1280 1518
21.104 23.940
1280 1518
166.42 200.82
9