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Displaying the Test Menus . . . 5-2 Checking Whether a Test Is Running . . . 5-2 Checking the Pattern Test Results . . . 5-2 Network T1 Loopback Modes and Pattern Tests. . . 5-3 DTE T1 Loopback Modes. . . 5-4 Data Ports Loopback Modes and Pattern Tests . . . 5-5 Running Tests on Proxied Devices. . . 5-6 Accessing the Test Display from the Menu. . . 5-8 Accessing the Test Display from the Command Line . . . 5-8 Checking the Test Results . . . 5-9 Aborting Tests Started from the Front Panel. . . 5-10

Overview

The DCE Manager enables you to put 3100 Series and proxied devices in loopback mode and send/monitor pattern tests. (You also can put proxied devices in self-test mode.) The pattern tests check the integrity and performance of the devices and, to some extent, the network. The first part of the chapter discusses tests for the 3100 Series devices; the second part discusses the test for the proxied devices.

Refer to Chapter 6, Troubleshooting, for an explanation of how to use the loopback modes and pattern tests to isolate problems to a device or the network.

Running Tests on 3100 Series Devices

Before you set loopback modes or run pattern tests on the 3100 Series devices, ensure that the Write Community Name matches that of the device on which you want perform the action. It does not match by default. You can set the Write Community Name by using the HP OpenView menu selection Options–>SNMP Configuration.

5

Displaying the Test Menus

To display the menus from which you can set loopback modes or send/monitor pattern tests:

1. Select a device by clicking on a 3100 Series device symbol as it appears on an HP OpenView Windows submap.

2. Use the menu selection Monitor–>OneVision Device Mgmt: DCE Manager–> Rear Panel–>Open to display the rear panel.

3. Select an interface by clicking on the interface symbol representing the one you want to test: Network T1, DTE T1, or Data Ports 1– 4.

4. Use the menu selection Diagnose–>OneVision Device Mgmt: DCE Manager–>loopback modes or pattern tests. (Loopback modes or pattern tests inappropriate for the device you have selected are grayed out.)

Checking Whether a Test Is Running

The DCE Manager enables you to check whether a test is in progress for an interface. To do this, use the appropriate health and status dialog (Chapter 3) or check the color of the interface symbol.

It is salmon colored if a test is in progress. Use Monitor–>OneVision Device Mgmt: DCE Manager–>Rear Panel–>Update Status to ensure that the rear panel reflects the current state of the interface.

Checking the Pattern Test Results

The DCE Manager enables the Network T1 and Data Port interfaces to continuously monitor the integrity of data patterns sent to them by other devices. The result of a pattern test is reported in the Test Code field of the Network T1 or Data Ports health and status dialog (described in Chapter 3).

The possible values are In Sync (device is operational), In Sync With Bit Errors (device is marginal), or Not in Sync (device is down).

To check the result of a specific test, display the appropriate health and status dialog:

1. Select a device by clicking on a 3100 Series device symbol as it appears on an HP OpenView Windows submap.

2. Use the menu selection Monitor–>OneVision Device Mgmt: DCE Manager–>Rear Panel–>Open to display the rear panel.

3. Position the mouse cursor over the interface symbol that represents the interface that you want to check.

4. Press the right-hand mouse button and select Describe/Modify Object.

5. Double-click Health and Status (att-3100) in the Object Attributes list box.

Network T1 Loopback Modes and Pattern Tests

Table 5-1 shows the loopback modes and pattern tests available for the Network T1 interface. See Using Loopback Modes and Pattern Tests in Chapter 6 for a description of how to use loopback modes and pattern tests to troubleshoot a device. (Appendix A identifies the MIB objects that are set when you select loopback modes and pattern tests.)

Table 5-1

Network T1 Loopback Modes and Pattern Tests

Menu Item Function of Loopback Mode or Pattern Test Remote Loopback –> Send LLB

Up Code

Sends the line loopback up code from the selected device to the remote DSU/CSU for a period of 10 seconds.

Remote Loopback –> Send LLB Down Code

Sends the line loopback down code from the selected device to the remote DSU/CSU for a period of 10 seconds.

Loopback –> Abort Loopback Aborts active loopback tests on the selected device.

Loopback –> Start Line Loopback Loops the received signal on the selected network interface back to the network without the signal passing through the framing circuitry of the DSU/CSU. The signal is looped on the network side of the DSU/CSU (see Figure 6-2 in Chapter 6).

Loopback –> Start Payload Loopback

Loops the received signal on the selected network interface back to the network after the signal has passed through the framing circuitry of the DSU/CSU. The signal is looped on the DTE side of the DSU/CSU (see Figure 6-3 in Chapter 6).

Patterns –> Abort Send Aborts active send test pattern tests on the selected device.

Patterns –> Send QRSS Pattern Sends a QRSS test pattern out of the selected network interface.

Patterns –> Send 1 in 8 Pattern Sends a 1-in-8 pattern out of the network interface.

Patterns –> Abort Monitor Aborts active monitor test pattern tests on the selected device.

Patterns –> Monitor QRSS Pattern Monitors a QRSS test pattern received on the selected network interface.

DTE T1 Loopback Modes

Table 5-2 shows the loopback modes available for the DTE T1 interface. See Using Loopback Modes and Pattern Tests in Chapter 6 for a description of how to use loopback modes and pattern tests to troubleshoot a device. (Appendix A identifies the MIB objects that are set when you select loopback modes.)

Table 5-2

DTE T1 Loopback Modes

Menu Item Function of Test

Loopback –> Abort Aborts active loopback tests on selected device.

Loopback –> Start DTE Loopback Loops the received signal on the selected DTE T1 interface back to the DTE without the signal passing through the framing circuitry of the DSU/CSU (see Figure 6-4 in Chapter 6).

Loopback –> Start Repeater Loopback

Loops the received signal(s) from the data ports and selected DTE T1 back to the data and DTE ports after the signal(s) has passed through the framing circuitry (see Figure 6-5 in Chapter 6).

Data Ports Loopback Modes and Pattern Tests

Table 5-3 shows the loopback modes and pattern tests available for the Data Ports interfaces. (The number of ports depends on the model of your device. Because the 3150 has no data ports, this dialog is not available for that device.) See Using Loopback Modes and Pattern Tests in Chapter 6 for a description of how to use loopback modes and pattern tests to troubleshoot a device.

(Appendix A identifies the MIB objects that are set when you select loopback modes and pattern tests.)

Table 5-3

Data Ports 1– 4 Loopback Modes and Pattern Tests

Menu Item Function

Remote Loopback –> Send V.54 Up Code Sends the V.54 activation sequence from the selected device to the remote DSU/CSU to initiate a V.54 Loop 2 (DCLB).

Remote Loopback –> Send V.54 Down Code Sends the V.54 deactivation sequence from the selected device to the remote DSU/CSU to terminate a V.54 Loop.

Remote Loopback –> Send FT1 Up Code Sends the ANSI T1.403 (Annex B) activation sequence from the selected device to the remote DSU/CSU to initiate a DCLB on the remote device.

Remote Loopback –> Send FT1 Down Code Sends the ANSI T1.403 (Annex B) deactivation sequence from the selected device to the remote DSU/CSU to terminate a DCLB on the remote device.

Loopback –> Abort Aborts active loopback tests on the selected device.

Loopback –> Start Data Channel Loopback Loops the data for the selected synchronous data port back to the network interface after the information has passed all the way through the DSU/CSU; that is, just before it is sent to the customer equipment, either through the Network T1 or DTE T1 interface (see Figure 6-6 in Chapter 6).

Loopback –> Start Data Terminal Loopback Loops the data for the selected synchronous data port back to the port just before it is combined with the rest of the T1 data stream (see Figure 6-7 in Chapter 6).

Patterns –> Abort Send Aborts active send test pattern tests on the selected device.

Patterns –> Send QRSS Pattern Sends a QRSS test pattern on the channels allocated to the selected data port.

Patterns –> Send 511 Pattern Sends a 511 test pattern on the channels allocated to the selected data port.

Patterns –> Abort Monitor Aborts active monitor test pattern tests on the selected device

Patterns –>Monitor QRSS Pattern Monitors a QRSS test pattern received on the channels allocated to the selected data port.

Patterns –>Monitor 511 Pattern Monitors a 511 test pattern received on the channels allocated to the selected data port.