Cisco Systems MGX 8230 Negative Tests, Configure Feac Validation Criteria to be FEACCodes8Of10

Chapter 6 Card and Service Configuration

DS3 Loopback Test

Step 1 Select a node with PXM-T3 back card.

Step 2 Configure the receive FEAC validation criteria to be 4 out of 5 by using CLI command, cnfln -ds3<slot>.<port> -rfeac 1.

Step 3 On the node, verify that the default FEAC code shows up as LineRcvFEACValidation : 4 out of 5 FEAC codes using dspln -ds3<slot>.<port>.

Step 4 Check that dsplog does not show any errors or alarms logged.

Pass Criteria:

•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.

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

Transmit FEAC Codes

Receive FEAC Validation

DTA Tester

(Digital

Transmission

Analyzer)

46087

Step 1 Select a node with PXM-T3 back card.

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:

•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.

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	Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001