User Manual

80 Chapter 17 Troubleshooting
• 8-bit characters
• 1 stop bit
• No parity
3. Press Enter to get a logon prompt from the PortServer TS 8/16.
4. Log on to the PortServer TS 8/16.
5. Use the set config command to verify the PortServer TS 8/16 IP
address.
Checking for Duplicate IP Addresses
Use this procedure to ensure that the PortServer TS 8/16 and another
device are not using the same IP address.
1. From another system on the network, use the ping command to deter-
mine if the IP address is in use. The following is the command syntax:
ping ip-address
2. Do one of the following:
• If there is no response to the ping, exit this procedure and return to
the symptoms section of this section. Two devices using the same
IP address is probably not a problem.
• If there is a response, continue with this procedure.
3. Turn the PortServer TS 8/16 off and then ping again.
4. Do one of the following:
• If there is a response to the ping, there is another device using that
IP address, so assign one of the devices a new IP address.
• If there is no response, turn the PortServer TS 8/16. Another device
is not using the IP address assigned PortServer TS 8/16.
Pinging an IP Address
Use this procedure to deterrmine if a system can be reached from across a
network.
Attempt to ping the PortServer TS 8/16 from another system on the
network. Here is the format of the command:
ping ip-address
Verifying the Network Cabling
Use this procedure to troubleshoot network cabling problems.
1. Check the Ethernet cable. Verify the following:
• The Ethernet cable is connected securely at both ends.
• The Ethernet cable is pinned correctly.
• The quality of the cable is sufficient for the cable length and the
cable environment. Common Category 5 Unshielded Twisted Pair
cabling can generally be run 300 meters at a speed of 10 Mbps and