Hitachi GR2000 Series - Manual (Page 306)

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:
> test interfaces nif 1 line 0 remote-line-inband [CR]
(Wait about 1 minute.)
> no test interfaces nif 1 line 0 [CR]
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:
> test interfaces nif 1 line 0 internal [CR]
(Wait about 1 minute.)
> no test interfaces nif 1 line 0 [CR]
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.