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AR Router Troubleshooting Guide

This Product Documentation provides guidance for maintaining AR Enterprise Router, covering common information collection and fault diagnostic commands, typical fault troubleshooting guide, and troubleshooting.
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Terminal Does Not Display Anything Or Displays Garbled Characters

Terminal Does Not Display Anything Or Displays Garbled Characters

Fault Description

After a terminal connecting to a router starts, it cannot display anything or displays garbled characters.

Possible Cause

  • The power module of the router is faulty or the router is not powered on.

  • The serial interface connecting to the router is incorrectly configured.

  • The cable between the terminal and router is faulty or not firmly connected to the serial interface.

Troubleshooting Roadmap

  • Check the power indicator on the router's front panel to ensure that the power module is working properly.

  • Ensure that the serial interface is correctly configured.

  • Install the cable firmly or replace the cable.

Troubleshooting Procedure

  1. Check the power indicator on the router's front panel. If the power indicator is On, the power module is working properly. If the power indicator is Off, rectify the fault according to Power Module Failures.

  2. Check whether the correct combo interface is selected and whether the physical attributes of the PC is consistent with those of the serial interface. The default parameters are as follows:

    • Baud rate: 9600

    • Data bit: 8

    • Stop bit: 1

    • Parity check: None

    • Flow control: None

  3. Ensure that the cable is firmly connected to the serial interface. You can replace it with a new cable to verify whether the cable is faulty.

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Updated: 2019-05-10

Document ID: EDOC1000079719

Views: 444298

Downloads: 4295

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