
5. Diagnostics
5-12   February 2003 8335-A2-GB20-70
Procedure
To test a virtual circuit:
1. Select an interface (dsl1:1 through dsl16:1 on the Model 8335, dsl1:1 through 
dsl12:1 on the Model 8365, or dsl1:1 through dsl24:1 on the Model 8385).
2. Enter a VPI and VCI for the virtual circuit you wish to test, the type of test 
desired (end-to-end or segment), and the test direction (towards the endpoint 
or towards the network).
3. Select Begin.
4. Inte rpret the display as shown in Table5-3, Diagnostics – ATM Ping.
Table 5-3. Diagnostics – ATM Ping 
ATM Ping Screen D-C-A
Displays the progressive results of sending of test cells to the ATM endpoint on a 
selected virtual circuit.
Interface name – Select the interface to be tested (dsl1:1 through dsl16:1 on the 
Model8335, dsl1:1 through dsl12:1 on the Model 8365, or dsl1:1 through dsl24:1 on the 
Model 8385).
VPI – Enter the VPI of the VC to be tested.
VCI – Enter the VCI of the VC to be tested.
Type – The type of test, either End2End (End-to-End F5 Loopback) or Segment 
(Segment F5Loopback).
Direction – Select the direction you wish to send cells to: Towards the Endpoint or 
Towa rd s th e N etw or k.
Status – Indicates whether a test is in progress (Active/Inactive).
Class – Displays the class of service for the selected VPI/VCI.
Source – If a ping test is in progress, displays the source of the test, either UI (from the 
user interface) or NMS (from the NMS).
Elapsed Time – Displays the amount of time that has elapsed since the test began.
Cells Sent – Displays the number of cells sent on this VC. The counter restarts after 
99999999.
Cells Received – Displays the number of cells received on this VC. The counter restarts 
after 99999999.
Round Trip Delay:
Min – Displays the shortest round trip delay (0 to 99999 ms) encountered on cells 
received.
Max – Displays the longest round trip delay (0 to 99999 ms) encountered on cells 
received.
Avg – Displays the average round trip delay (0 to 99999 ms) encountered on cells 
received.