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DS3 Loopback Test
Select a node with PXM-T3 back card.
Step 1
Configure the receive FEAC validation criteria to be 4 out of 5 by using CLI command, cnfln -ds3
Step 2
<slot>.<port> -rfeac 1.
On the node, verify that the default FEAC code shows up as LineRcvFEACValidation : 4 out of 5 FEAC
Step 3
codes using dspln -ds3 <slot>.<port>.
Check that dsplog does not show any errors or alarms logged.
Step 4
Pass Criteria:
•
•
•
Configure FEAC Validation Criteria to be FEACCodes8Of10
To verify that validation criteria for DS3 can be configured to be FEACCodes8Of10:
MGX 8230 Switch
with T3 Interface
Select a node with PXM-T3 back card.
Step 1
Step 2
Configure the receive FEAC validation criteria to be 8 out of 10 by using CLI command, cnfln -ds3
<slot>.<port> -rfeac 2.
Step 3
On the node, verify that the default FEAC code shows up as LineRcvFEACValidation : 8 out of 10 FEAC
codes using dspln -ds3 <slot>.<port>.
Step 4
Check that dsplog does not show any errors or alarms logged.
Pass Criteria:
•
•
•
Negative Tests
Disable FEAC Codes
Verify that the FEAC codes can be disabled to ensure the remote end initiated FEAC does not result in
an automatic loop of the near-end equipment:
Cisco MGX 8230 Edge Concentrator Installation and Configuration
6-62
The dspln should show LineRcvFEACValidation as 4 out of 5 FEAC codes.
The validation code that has been received on the node and verified.
No errors logged on the console or the log.
Transmit FEAC Codes
Receive FEAC Validation
The dspln should show LineRcvFEACValidation as 4 out of 5 FEAC codes.
The validation code that has been received on the node and verified.
No errors logged on the console or the log.
Chapter 6
Card and Service Configuration
DTA Tester
(Digital
Transmission
Analyzer)
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
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