7.1.3 Error Injection Settings
Error injection can only be performed during testing. The error type and injection rate are configured in the Error Injection tab.
Error type:
Select from Bit, CRC, IP Checksum (Layer 3, 4 only), Pause, TCP/UDP Checksum (Layer 4 only). With Pause
selected, the unit will transmit a pause frame when Error Injection icon is pressed. The Pause time duration is configurable
in units of 512 bit time. At Gigabit Ethernet speed, this is equivalent to 512 ns. For example, if pause time is set to 1000,
the pause duration will be set to 1000x512 ns.
Injection Flow:
Determines how the selected errors will be injected.
Select a single error injection or specific count.
Count:
Configures the error count via the numeric pop-up keypad.
Once the test is running, error injection is enabled by selecting the Error Injection icon from the action drop-down menu at the top
of the screen. Press the Error Injection button to inject errors at the predetermined settings.
BERT - Error Injection Setup
BERT - Error Injection Action Menu
7.1.4 Control Settings
In the Control settings tab, the user configures the loop up and loop down commands necessary to control a far-end unit. The loop
up command contains information about the test layer. Looping back test traffic is possible as follows:
Layer 1:
All incoming traffic is looped back unchanged.
Layer 2:
All incoming unicast traffic is looped back with the MAC source and destination addresses swapped.
Layers 3 & 4:
All incoming unicast traffic is looped back with MAC and IP source and destination addresses swapped.
Mode:
Manual
Manual:
User must input the destination IP address of the far-end device along with the type of command or press
Discover.
IP Destination: Enter the IP address of the far-end test set that is to be looped up/down.
Prior to starting the test, manually send the loop up command by pressing the Loop Up button.
A "Loop up successful" message will appear.
After completing the test, manually send a loop down command by pressing the Loop Down button.
BERT - Control Setup (Manual)
BERT - Device Discovery
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