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86 Chapter 5
Troubleshooting
Troubleshooting Network Configuration
Troubleshooting Network Configurations
If some network configuration values for the E2050 LAN/GPIB Gateway are
improperly configured, one or more client systems may not be able to make
a connection to the Gateway. The problem may be:
n Improper configuration value(s) for the default subnet gateway and/
or the subnet mask. If this is the case, the Gateway may be receiving
requests from the client, but routing the replies to the wrong place.
n Improper or incomplete configuration value(s) for the IP allow list.
If the client IP address does not match the ones allowed in the
configured IP allow list, the connection will be refused. To verify this:
l Check for a response from the Gateway with the ping command.
If a response occurs, the connection is being refused because of
the IP allow list configuration values.
l If you are using a syslog server, look for access denied
messages in the syslog file. See “syslog File Messages” for more
information.
Telnet Configuration To correct network configuration values when using the Telnet configuration
method, take one of the following actions:
n If a client can successfully Telnet to the Gateway, use the Telnet
configuration commands to fix the values. Then, reboot using the
Tel net reboot command.
n Otherwise, reset the Gateway to the default configuration values by
pressing the
Config Preset button on the back panel of the
LAN/GPIB Gateway at the same time as you power-on the Gateway.
Then, see Chapter 3 to reconfigure the Gateway.
CAUTION
Any client operations in progress and client connections will be
terminated by the reboot command.