Specifications

Niagara Release 2.3
Revised: May 22, 2002 Niagara Networking & Connectivity Guide
Chapter 3 Connecting on a LAN
Troubleshooting Connectivity to an Existing JACE Controller
3–14
Once you have made changes to one or more network settings, you must reboot the
host for those changes to be implemented. The Admin Tool provides a reboot
function on the Host menu.
Step 11 From the menu, select Admin Tool > Host > Reboot to implement your changes.
Step 12 Change the network settings on your PC to be in the same range as the new IP
address for the JACE.
Step 13 Using the ping command, ping the IP address of the JACE.
For more information on the ping command, see the “ping” section on page 2-20.
Crossover Cable Connection
Use the following procedure to attach an engineering PC directly to the JACE and
verify connectivity:
Procedure 3-4 Connecting to a JACE using a crossover cable.
Step 1 Connect one end of an Ethernet crossover cable to the Ethernet port on the JACE.
Step 2 Connect the other end of the crossover cable to the Ethernet port on your engineering
PC.
Step 3 Follow Step 3—Step 13 of Procedure 3-3.
Troubleshooting Connectivity to an Existing
JACE Controller
In a typical environment, once you set up a JACE on the network you will always be
able to reach it across the LAN using its documented IP address or name. However,
you might walk into a customer environment for which you do not have
documentation. Or, the JACE may have become unreachable at the documented
settings.
In addition, when typing in the network settings for a host, it is quite common to
make a typing error in the IP address, subnet mask, or default gateway. A mistake in
any one of these settings could make your host unreachable. Consider the following
scenarios:
• Mistake in IP address—If you make a mistake when typing the IP address,
the host will be reachable at the incorrect address, but not at the correct address.
You would need to know how to look up the IP address it was configured with
to be able to connect to it to correct the address (see “Determining Network
Settings”).