Hitachi GR2000 Series - Manual (Page 302)

Hitachi Gigabit Router GR2000 Series Enhanced Version Operations - Device Management Overview
8-40 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 connector [CR]
(Wait about 1 minute.)
> no test interfaces nif 1 line 0 [CR]
The result will appear in a similar manner as (a) internal loopback test for WAN
line.Make sure that “Send-NG” and “Receive-NG” are both 0
.
(3) Modem Manual Loopback Test for WAN Line
The testing can be executed on modem-connected serial lines (V.24/V.35/X.21)
by entering the
test interfaces and no test interfaces commands from the device
management terminal.
This test loops back the test frame at the local modem or remote modem set to
loopback mode. Prior to testing, the modem should be set to loopback mode.For
example, to test line No. 0 of NIF No. 1, enter the command lines as shown below:
> test interfaces nif 1 line 0 manual [CR]
(Wait about 1 minute.)
> no test interfaces nif 1 line 0 [CR]
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.
(4) Local Modem Loopback Test (LLB) for WAN Line:
This test loops back the test frame at the local modem in support of local modem
loopback test. The testing can be executed on modem-connected V.24 serial lines
(not V.35 or X.21) 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 line interfaces nif 1 line 0 local [CR]
(Wait about 1 minute.)
> no test interfaces nif 1 line 0 [CR]
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: The test can be executed on the NIF boards OC-3c (8 ports), OC-12c (4 ports), and OC-48c
only when the clock of the configuration definition information line is set to “independent.”
If the clock is set to “external,” a line fault is likely to occur.
*
Note: The result will appear in a similar manner as (a) 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 of the show interfaces (serial)
information
in GR2000 Operations Commands, Vol. 1.
*
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 the information of the show interfaces (serial)
information in GR2000 Operations Commands, Vol. 1 .