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Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview

8-44 GR2K-GA-0015

Ver. 07-02

For example, to test line No. 0 of NIF No. 1, enter the command lines as shown

below:

(Wait about 1 minute.)

8.7.3 Testing on ATM Line

For testing on an ATM line, internal loopback test and loop connector loopback test

are available.

(1) Internal Loopback Test for ATM Line:

This test loops back the test frame within the NIF. The testing can be executed by

entering the test interfaces and no test interfaces commands from the device

management terminal. For example, to test line No. 0 of NIF No.1, enter the

command lines as shown below:

(Wait about 1 minute.)

The result will appear as shown in Figure 8-43 where you must make sure that

“Send-NG” and “Receive-NG” are both 0 (normal).

Note: The result will appear in a similar manner as internal loopback test for WAN line.Make sure

that “Send-NG” and “Receive-NG” are both 0 (normal) and “Test Count” is not 0. If “Test

Count” is 0, confirm the line status using show interfaces (T1) information GR2000

Operations Commands, Vol. 1. If “Test Count” is not 0 and either “Send-NG” or

“Receive-NG” is not 0, analyze the result in accordance with (a) Internal Loopback Test for

WAN Line.

Note: When the frame format is SF and a Remote Line Loopback Test is going to be conducted,

execute this test.

Note: If “Send-NG” and “Receive-NG” are not 0, there is an apparent problem. Analyze the result in

accordance with the no test interfaces (ATM) command.

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Hitachi GR2000 Series Manual do Utilizador Página 306