Interface Failure - HP FlexFabric 7900 Series Installation Manual

2. Calculate the total power consumption, and make sure the power supplies can provide enough
power. For more information, see
3. Verify that the LPU is fully seated by removing and reinstalling the LPU. For more information about
installing an LPU, see
4. If the switch has empty card slots, install the card into another slot. If the card can operate correctly,
the previous slot is faulty.
5. If the failure persists, contact the local agents or technical support engineers.

Interface failure

The switch provides an LED for each interface on LPUs. When an interface connected to the network
operates correctly, the LED is steady on.
NOTE:
A management Ethernet port has two LEDs: LINK and ACT. When the LINK LED is steady on, the
management Ethernet port is operating correctly. Each interface of any other type has only one LED.
If the LED of an interface connected to the network is off, the interface or the connecting cable might fail.
To troubleshoot the interface:
1. Examine the cable connection of the interface. For information about how to correctly connect the
cable to an Ethernet interface, see
2. Verify that the cable is in good condition. Use the cable to connect two interfaces of the same type
that operate correctly. If the LEDs of the two interfaces are on, the cable is in good condition.
Otherwise, the cable is broken. Replace the cable.
3. If the interface uses a transceiver module, make sure the interface and the transceiver module are
compatible, and the transceiver module operates correctly. For more information about transceiver
modules, see
4. Verify that the speed and duplex settings of the interfaces of the two ends are the same.
5. If the problem persists, contact the local agents or technical support engineers.
NOTE:
If an interface is brought down by the shutdown command, use the undo shutdown command to bring
•
up the interface.
• After an interface fails, if the switch has an idle interface of the same type, you can plug the cable into
the idle interface.
"Appendix A Chassis views and technical
"Installing/removing an
"Connecting the switch to the
"Appendix B FRUs and compatibility
LPU."
matrixes."
36
specifications."
network."