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XTT 5000 User's Manual
Technology: Ethernet Frame Size and Efficiency
Because each frame is followed by a frame gap and preamble, there is an inherent
inefficiency built into Ethernet traffic. The percentage of bandwidth lost to the 20
bytes of
IPG
and preamble is lower for larger frames than smaller frames, as shown:
Data size
Overhead
/frame
Frames/sec. Total
bits
lost
(oh)
% of
Bandwidth
Lost
64 Bytes
(512 bits)
160 bits
1,488,095
238,095,238
23%
128 Bytes
(1024 bits)
160 bits
844,594
135,135,135
13%
512 Bytes
(4096 bits)
160 bits
234,962
37,593,984
3.7%
1024
Bytes
(8192 bits)
160 bits
119,731
19,157,088
1.9%
1518
Bytes
(12144
bits)
160 bits
81,274
13,003,901
1.3%
Frame Rates
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Summary of Contents for XTT 5000
Page 1: ...XTT 5000 User s Manual...
Page 2: ......
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Page 55: ...Throughput Testing L2 BERT Diagram Home Layer 2 BERT Where do you want to go next Home 49...
Page 58: ...XTT 5000 User s Manual Throughput Stream Results Throughput Test Setup Working Desktop Home 52...
Page 61: ...Throughput Testing Home 55...
Page 67: ...Throughput Testing Throughput Aggregate Results Throughput Stream Results Home 61...
Page 81: ...Throughput Testing Working Desktop Home 75...
Page 83: ...Throughput Testing Home 77...
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Page 147: ...Save Features 141 RFC2544 NE Applications IP Test Setup Monitor Setup Loopback Test Setup Home...
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