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Datanet troubleshooting guide, Instructions, Configuration conflicts – Siemens ADVANCE NETWORK COMMUNICATIONS BOARD/DATANET 2000592-001 User Manual

Page 62: Cable connected to wrong hub or port

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DataNET Troubleshooting Guide

Instructions

If a DataNET communications link fails to establish check for a:

• configuration

conflict,

• link signal quality problem.

Configuration
Conflicts

If the ANCB_DN port DNETA or DNETB LED is never green, or
intermittently flashes between green and red, a configuration conflict
exists. Configuration conflicts can be caused by cabling or improper
software configuration parameters.

Cable Connected to
Wrong Hub or Port

Verify that the Channel A DataNET link is connected to the A Hub half
and that the Channel B DataNET link is connected to the B Hub half.
Verify that both Channels A & B utilize the same port number on their
respective Hub half. Then display the Port Status screen by connecting a
PC to the Configuration Port, logging in, and typing display links. Verify
that the two Ports are connected as expected.

The following example shows that port #1 (DataNET Channel A) is
connected to the DataNET Hub whose IP address is 172.016.099.003 on
port #4, Hub half A and port #2 (DataNET Channel B) is also connected
to the DataNET Hub whose IP address is 172.016.099.003 on port #4,
Hub half B.

Example

local> display links

Port: Medium: Status: Connected to:

1 Copper Connected 172.016.099.003,4A

2 Copper Connected 172.016.099.003, 4B

Ethernet UP

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Troubleshooting

2000592-001