H3C Technologies H3C S12500-X Series Switches - Manual (Page 120)

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Card LEDs
The MPU has the LEDs numbered the same as card slots to indicate the status of the active MPU, standby
MPU, LPUs, and switching fabric modules in the slots.
• On each S12510-X AC/S12510-X DC switch:
{
LPU slot numbers are marked above the slots on the front panel.
{
MPU slot numbers and switching fabric module slot numbers are marked to the right of the slots
on the rear panel.
• On each S12516-X AC/ S12516-X DC switch:
{
MPU and LPU slot numbers are marked to the right of the slots on the front panel.
{
Switching fabric module slot numbers are marked above the slots on the rear panel.
Table 54 Card LED description
RUN ALM Description
Flashing (once every two
seconds)
Off The card is operating correctly.
Flashing (4 times per
second)
Steady on
The card is loading software.
(If the RUN LED keeps flashing and the ALM LED keeps
steady on, the software versions of the switch and the card
do not match.)
Flashing (once every two
seconds) Flashing (every 4
seconds) The temperature of the card is higher or lower than the
warning threshold.
Steady on Steady on The card is starting up or the card is faulty.
Off Off The card is not in position.
NOTE:
The ALM LED for an LPU lights for a period of time at the initial phase of the system startup.
MPU active/standby status LED
The MPU has one ACTIVE LED to indicate the active or standby status of the MPU.
Table 55 MPU ACTIVE LED description
LED status Description
On The MPU is active.
Off
• The MPU is in standby status.
• The MPU is faulty. Examine the card LED for an MPU problem.
LPU LEDs
LPUs of the S12500-X switches support RJ-45 ports, SFP ports, SFP+ ports, QSFP+ ports, CFP ports, and
CXP ports.