Access Easy Controller 2.1 Appendix E Troubleshooting | en 117
Robert Bosch (SEA) Pte Ltd Hardware Installation Manual 2018.11 | 1.0.6 | F.01U.122.796
2. Disconnect the AEC2.1 from the customer's network and connect the technician's
computer in its place. Be sure to use the same wall jack (or hub port) as used by the
controller. Also, use the same category-5 cable, used to connect the controller to the hub.
Be sure to use a straight-through cable, not the crossover cable that was used in the
previous steps of this procedure.
3. Check the indicator LED on the customer's hub for the port to which the technician's
computer is connected.
Decision:
Is the green LED lit for the hub port to which the technician's computer is connected?
Yes - The wiring between the computer and the customer's hub is correct. Continue with step
6.
No - On most hub, a yellow or red LED usually indicates cabling problem between the
computer and the hub. A non-lit LED usually indicates an open circuit between the computer
and the hub. You may want to try a different cable, or a different hub port. Also, be certain the
computer is not connected to an Upstream port on the hub.
Some hubs may have indicators different from those described in the preceding paragraph.
Refer to the hub's documentation for additional details.
Do not proceed further in this test procedure until this step can be passed.
Step 6 - Validate network configuration using the “ping” command
Procedure:
With the technician's computer still connected to the customer's network, and the hub port
indicating a “green” condition, have the customer use one of the network connected
computer's to send a “ping” command to the address of the technician's computer. The “ping”
command should be performed from a computer on the same local sub-net as the technician's
computer.
Decision:
Did the customer receive a response to the “ping” command?
Yes - Proceed to step 7.
No - There is a network configuration problem.
If the “ping” command returned the message “Request timed out,” then there is a basic
network configuration error, possibly the setting of the IP address or subnet mask assigned
for the AEC2.1. Or the customer's router may not be configured properly. Review these items
with the customer.
If the “ping” command returned the message “Network unreachable”, then the customer's
router or proxy server may be configured incorrectly, or the IP address, netmask, or gateway
provided for the AEC2.1 are incorrect.
In either case, do not proceed further in this test procedure until this step is successfully
passed.
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