Isolating Hardware Problems; Node Checks - IBM eserver Cluster 1350 Installation And Service Manual

Isolating hardware problems

This section includes troubleshooting information about cluster hardware problems.

Node checks

42 IBM Eserver Cluster 1350 Installation and Service Guide
Table 16. Troubleshooting the remote console network
Symptom
1. Cannot execute a rconsole
command to any cluster
node.
2. Cannot execute any
rconsole commands to get
an active terminal session.
Action
1. Make sure that the Ethernet connections between the
terminal server and the Cisco switch are OK. Also
check the connections between the Cisco switch and
the management node.
2. Check the cables, dongles, and connectors at the node
and the terminal server. Make sure that the serial port
at the node is attached to the serial port on the terminal
server by using the CSM command: Isnode-aI
<NodeName>. See the ConsolePortNum information later
in this section.
3. Follow steps 1 through 9 of Chapter 11, "Configuring
the terminal server after device replacement," on page
59, then at the IN-Reach_Priv> prompt, type, show port
<portnumber> to compare the settings of all suspect
ports against ports that are working.
4. Make sure that the terminal server is turned on and
connected to the network by pinging the unit at the IP
address of 172.30.20.1.
5. To make sure the serial port (COM 1) is configured to
redirect output to the terminal server, complete the
following steps:
a. Restart the node and review the console screen.
b. When the message, Press F1 for
Configuration/Setup opens, press F1.
c. From the main menu, select Devices and I/O Ports
then press Enter.
d. Make sure that Serial Port A is set to Port 3F8, IRQ
4.
e. Select Serial Port A.
f. Select Remote Console Redirection.
g. Check the following settings:
Remote Console Active [Enabled]
Remote Console Com Port [COM1]
Remote Console Baud Rate [9600]
Remote Console Data Bits [8]
Remote Console Parity [None]
Remote Console Stop Bits [1]
Remote Console Emulation [VT100]
Remote Console Active After Boot [Enabled]
h. Save the settings and exit.
6. For the xSeries 335 and xSeries 345 only, run
diagnostics against the serial port to validate network
connectivity.
7. Swap out the cables and dongle with new cables and
dongle.