8. Troubleshooting

PVC Tests

PVC tests can be run on a requested DLCI for a selected interface.

When PVC tests are on a multiplexed DLCI between FrameSaver devices, they are nondisruptive to data, so user data can continue to be sent during a

Ttest.

If the device at one end of the circuit is not a FrameSaver device, PVC tests are on a standard DLCI and are disruptive to data. Also, the Connectivity test would not appear.

Loopback, and send/monitor pattern tests are available for each interface on the selected DLCI. FrameSaver devices should be at each end of the circuit. If a PVC Loopback is started at one end of the circuit, the other end can send and monitor pattern tests.

The example below shows a PVC Test screen for a FrameSaver unit with ISDN backup capability, with the multiplexed DLCI 550 selected. If a standard DLCI was selected, (Disruptive), rather than (Non-Disruptive), would be displayed after Test. Also, the Connectivity test would not appear.

PVC Tests Screen Example

main/test/network_pvc

 

 

 

9128-II

Device Name: Node A

 

 

5/26/2000 23:32

 

 

NETWORK

PVC TESTS

 

 

 

DLCI Number: 550

 

 

 

 

 

Test (Non-Disruptive)

Command

Status

Result

 

 

PVC Loopback:

Start

Inactive

0:00:00

 

 

Send Pattern:

Start

Inactive

0:00:00

 

 

Monitor Pattern:

Start

Inactive

0:00:00

 

 

 

 

 

Sequence Errors

99999+

 

 

 

 

Data Errors

99999+

 

Connectivity:

Start

Inactive

RndTrip Time (ms)

99999

 

Test Call:

Stop

Active

Frame Relay Link Up

--------------------------------------------------------------------------------

Ctrl-a to access these functions, ESC for previous menu

MainMenu Exit

If the unit does not have the ISDN DBM feature, or if the ISDN Link Profile’s Link Status is disabled, Test Call does not appear. An Outbound Phone Number must be configured for Test Call to appear.

NOTE:

Errors encountered during these tests may be caused by mismatched CIRs in the two FrameSaver units. If errors are detected, verify the CIR configuration and retest.

8-22

September 2002

9128-A2-GB20-80

Page 286
Image 286
Paradyne 9128-II, CSU, DSU, 9126-II manual PVC Tests Screen Example