Spirent Communications - SmartBits Back-to-back Test Results
Vendor Name: Vendor
Product Name: Product
Software Version: SmartApplications V 3.00
Library Version: 3.51-1
Firmware Version: 1.07.009.0 - Active
Serial Number: 06001320
Back-to-back test length: 2 seconds
Average of: 50 trials
Port pairs active: 1
Mode: Uni-directional
Date: Thu Jun 24 18:05:59 2010
Port-Pair Back-to-back
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Frame size 64 128 256 512 1024 1280
1 Gb offered 2976190 1689190 905798 469924 239464 192308
Burst Seconds 2.0000 2.0000 2.0000 2.0000 2.0000 2.0000
Offered % 100.00 100.00 100.00 100.00 100.00 100.00
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(01,01,01) to (01,02,01) 2976190 1689190 905798 469924 239464 192308
Back-to-back SUMMARY: Total Port-Pairs
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Frame size 64 128 256 512 1024 1280
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Frames Rcv'd 2976190 1689190 905798 469924 239464 192308
Spirent Communications - SmartBits Back-to-back Test Results
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Frame size 1518
1 Gb offered 162548
Burst Seconds 2.0000
Offered % 100.00
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(01,01,01) to (01,02,01) 162548
Back-to-back SUMMARY: Total Port-Pairs
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Frame size 1518
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Frames Rcv'd 162548
This test concludes that at frame sizes of 64, 128, 256, 512, 1024, 1280 and 1518 bytes, with 100% interface traffic at 1 Gbps full duplex, with back to back packets there was 0% loss. The objective of the back-to-back frames test is to determine the largest burst of frames with minimum
interframe gap (back-to-back frames) the DUT can handle with zero loss.
The back-to-back frames test exposes any weakness in the ability of the DUT to handle large bursts of
traffic at maximum rate. This may be useful if the DUT must transport traffic that is sensitive to frame
loss, such as voice over IP.
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