Procedure C; Procedure D; Obtaining Service - IBM 8275 User Manual

Procedure C

Use this procedure if all devices connected to the 8275-416 are having
communication problems, the Fault LED is Off and the OK LED is On:
1. Reset the 8275-416 by disconnecting the power cord from the outlet, waiting 10

Procedure D

Use this procedure if one device connected to the 8275-416 is having a
communication problem, the Fault LED is Off, the OK LED is On and other attached
devices can communicate through the 8275-416 :
1. If the port LED is Off (left LED on 10/100BASE-TX port and single port LED on
2. If the port Link LED is On:
3. Restart the communications program on the failed connected device.
4. For each device that is having a communication problem, connect its segment
5. The problem does not appear to be in the 8275-416 and the cables and devices

Obtaining Service

There are no user-serviceable parts inside the 8275-416 chassis. The 8-Port
10/100BASE-TX and 8-Port 100BASE-FX feature modules are individually
replaceable by the user.
seconds, and reconnecting the power cord to the ac outlet.
v
If the problem goes away, resume using the 8275-416 .
v
If the status LEDs indicate a failure, go to "Procedure B" on page 64.
v
If the problem persists, check all the configuration parameters.
v
If the problem has still not been resolved, go to "Procedure D" and try to get
individual ports working.
100BASE-FX port), check the cable and the attached device. Check the
configuration settings to ensure they are OK.
a. Check the port configuration and make sure the port admin mode is
Enabled.
b. If the above check is OK, try pinging the attached device from the 8275-416
. Make sure the 8275-416 is configured for in-band connectivity.
c. If ping is successfully received, go to Step 5.
d. If the ping is not received, go to Step 3.
v If the communications program appears to start without errors, observe the
port LED on the 8275-416 port. If it is On it might have gone away. Check the
port configuration parameters for possible causes of the failure.
v If the problem persists, go to Step 4.
to another identically configured Ethernet port on the 8275-416 . Try each of the
remaining ports to determine if the problem will go away.
v If the problem goes away, the problem might be in the 8275-416 . See
"Obtaining Service".
v If the problem persists, continue with Step 5.
connected to the 8275-416 . The problem might be in the network applications
or other software running on the devices that are having the communication
problem. Refer to the networking software documentation for software problem
determination procedures, or consult your network administrator for assistance.
Chapter 6. Troubleshooting and Obtaining Service
65