DSL-1500G SHDSL Ethernet Router User’s Guide

System Maintenance

The Mainatenance folder in the web mananger contains links to menus used for sytem maintenance functions including firmware upgarde and username/password configuration.

ATM Loopback Test

ATM loopback tests are used to verify connectivity and path integrity along a specified ATM circuit. In the test, a cell is sent to an endpoint or to the end of the first segment of the ATM path. If the path is available and the connections are functioning, an test cell will be returned along the same ATM path and be detected by the device. This is very similar to a Ping test. The test can help to determine if connectivity problems originate from outside the LAN.

 

 

ATM Loopback Screen

To perform the test, define the following parameters:

 

 

 

 

VPI

Type in the VPI setting used for the network connection.

 

 

 

 

VCI

Type in the VCI setting used for the network connection.

 

 

 

 

 

Choose F4 (Virtual Path) or F5 (Virtual Connection) from the pull-down menu to

 

 

define the flow type. An F4 flow test is used to verify that ATM network information

 

 

(ATM cells) can be shared between network elements. This information is used

 

F4/F5

within virtual paths to report an unavailable path or a virtual path that cannot be

 

guaranteed. An F5 flow test is also used to verify that ATM network information can

 

 

 

 

be shared between network elements. This information is used within virtual

 

 

connections to report degraded virtual channel performance such as late arriving

 

 

cells, lost cells, and cell insertion problems.

 

 

 

 

etoe/segment

Select the test type from the remaining pull-down menu. Choose End-to-Endto test

 

the entire path from the Router to the ATM connection endpoint. Choose segment

 

 

to test the path from the Router to the end of the first ATM connection segment.

 

 

 

 

 

A success or fail message appears here after the test is completed. If the reply cell

 

Status

is received within the standard-defined time, the Status will read OK. This indicates

 

that the specified test path is functioning normally and all connections were

 

 

 

 

successful. If the Status reads Fail, there is a fault in the segment or path tested.

 

 

 

When all the test parameters have been specified, click on the Loop Test button to initiate the test.

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D-Link DSL-1500G manual System Maintenance, ATM Loopback Screen, ATM Loopback Test, F4/F5, Etoe/segment