User manual

TD990200-0ME

ROUTER.CFG file. Update the ROUTER.CFG file to include

the undefined subnet.

2. The Metasys Network generated a message that contained an

invalid address. Write down the message information that

appears on the screen and call Field Support Services.

Metasys Devices Do Not Respond

If any other node on the same ARCNET segment responds normally,

the router is not at fault. The problem could be caused by a Metasys

device failure or an ARCNET cable problem. Check the device for

any malfunctions, and use troubleshooting information from the N1

Local Area Network Technical Bulletin (in FAN 636).

All the Devices on One ARCNET Segment Do Not Respond

1. If other ARCNET segments are working, the problem is isolated

to the failing segment. Use Xping to find out if the suspect

router responds to Ethernet messages.

2. If the router responds, look at the ARCNET cable and Metasys

equipment.

3. If the router does not respond, look at the router and the

Ethernet network. (See Metasys Ethernet Router Does Not

Respond to Ping Requests, further on.)

Multiple ARCNET Segments Do Not Respond

This could be caused by a router configuration problem or an

Ethernet problem. Use TESTNET to determine which routers

respond. Verify that the configuration file (ROUTER.CFG) is

correct. Check the Metasys DDL files for correct subnet/node

addresses. Check the configuration at each failing router. Check

the Ethernet LAN for failures.

Metasys Ethernet Router Does Not Respond to Ping Requests

This could be caused by problems with the router or problems on the

Ethernet LAN. Check the router configuration. Check that the

Metasys Ethernet Router IP address, existing LAN Router IP address

and the subnet mask are correct for this router. Verify that the file

ROUTER.CFG is correct for this network. Use IPSTAT to look for

errors connecting to the Ethernet. If the router is running and

appears to be configured properly, the problem is probably due to an

Ethernet failure. Check with the network administrator to verify

that the network has not been changed and is functional.