Error Injection
Error injection is used to insert defects into the traffic generated by the test module,
in the Throughput test mode.
To configure error injection, press the error injection button when it's available on
the
.
To inject an error, you must first start the measurement and transmit traffic.
Error Type
: Select the type of error to inject, which depends on the type of test.
.
Default Errors
: 2
31
-1, 2
23
-1, 2
20
-1, 2
15
-1, 1111, 0000, 1010, 1100 CJPAT,
CRPAT, User 32, User 1024
User 32
: 32 bits pattern data.
User 1024
: 1024 bits pattern data. It doesn’t support increment pattern.
Payload length is 1000 bytes. A User pattern is filled with every four bytes
with same data. The User 1024 pattern is filled every 128 bytes.
Layer Default
Errors
SN
(Sequence
Number)*
IP TCP
UDP
Layer 1
Unframed
Bit
PRBS +
FCS
FCS/CRC,
BIT
Layer 2 &
above
FCS/CRC,
BIT
Lost
Frame,
Out-of-
Sequence,
Duplicate
Sequence
Number
IP
Checksum
TCP
Checksum
UDP
Checksum
*
To inject Sequence Errors
: 1. Turn Broadcast Error Off; 2. Press Error Type; 3.
Select a Sequence error.
Note
: You may turn Broadcast Error back On.
Error Availability
Mode
: Select the error injection method.
Options
: Single, Burst, Rate, Bit/sec -
Broadcast Error
: Inject errors on all streams; On is the default.
•
For 10G, press On to inject errors On all streams.
•
To inject errors on only one stream, press the button to Off, and touch the
stream number on the pad which appears to transmit on.
Pattern Inversion
: When enabled, the XTT 5000 will transmit the selected test
pattern inverted. This is indicated by INV on the 'TX Pattern’ button.
Error Type Details
Error Details
FCS/CRC
Frame Check Sequence/Cyclic Redundancy Check error.
Bit Error
Bit error in the frame payload/pattern. Pattern bit errors
are inserted before the FCS/CRC is calculated, and
therefore do not cause an FCS/CRC error, or cause the
frame to be dropped.
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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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