Hitachi GR2000 Series Bedienungsanleitung Seite 302

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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:
(Wait about 1 minute.)
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:
(Wait about 1 minute.)
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:
(Wait about 1 minute.)
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.
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