HP ProCurve Switch 1600M Installation Manual page 37

Tip
Number Problem

A module was
installed in the slot
that is a different
type than the
previously installed
module, and the
switch has not yet
been reset.

One or more of the
switch cooling fans
may have failed.

The network
connection is not
working properly.
When you "hot swap" modules in the switch slot, if you install a different module
type than the one that was previously installed in the slot, you must reset the switch
so the switch processor can properly initialize and configure the new module type.
The flashing LED informs you that this change of module types has occurred. The
module will not work properly until the switch is reset as indicated by all the module's
LEDs staying on until the switch is reset.
You can reset the switch by any of these methods:
• pressing the Reset button on the switch
• power cycling the switch
• selecting the reset or reboot option from the console, web browser interface, or
HP TopTools.
Try disconnecting power from the switch and wait a few moments. Then reconnect
the power to the switch and check the LEDs again. If the error indication reoccurs,
one or more of the fans has failed. The switch has two fans and may continue to
operate OK under this condition if the ambient temperature does not exceed normal
room temperature, but for best operation, the switch should be replaced. Contact
your HP-authorized LAN dealer, or use the electronic support services from HP to
get assistance. See the Customer Support/Warranty card for more information.
Try the following procedures:
• For the indicated port, verify that both ends of the cabling, at the switch and the
connected device, are snug.
• Verify the connected device and switch are both powered on and operating
correctly.
• Verify that you have used the correct cable type for the connection.
- for twisted-pair connections, in general, for connecting to an end node, use
"straight- through" cable; for connecting to MDI-X ports on hubs or other
switches, use "crossover" cable.
- for fiber-optic connections, verify that the transmit port on the switch is con-
nected to the receive port on the connected device, and the switch receive port
is connected to the transmit port on the connected device.
• Verify that the port has not been disabled through a switch configuration change.
You can use the console interface, or, if you have configured an IP address on
the switch, use the web browser interface, or HP TopTools for Hubs & Switches
network management software to determine the state of the port and re-enable
the port if necessary.
• If the other procedures don't resolve the problem, try using a different port or a
different cable.
Diagnosing with the LEDs
Solution
Troubleshooting
3-5