MAP5440 Fibre Channel host card reports a loss of light

A Fibre Channel host card in the storage facility detected and reported a loss of light from an attached host system. When a storage facility Fibre Channel host card detects a loss of light, the problem is normally external to the storage facility. This problem is reported to the host system as a status condition. A serviceable event is not created for this condition. A separate serviceable event is created if the Fibre Channel host card detects an internal operational error.

Before you begin

Customer disruption can occur if microcode and power boundaries are not in the proper conditions for this service action. Verify that you start all service activities in Start here.

MAP5440 Section-1

Procedure

  1. Use information from the customer to determine which Fibre Channel host card in the storage facility reported the loss of light.
    Note: A serviceable event is not created for this condition.
  2. Repair any related serviceable events for the affected Fibre Channel host card. Refer to MAP1210 Displaying and repairing a serviceable event.
  3. Observe the LED indicators on the affected Fibre Channel host card. With a loss of light condition, the LED indications that are shown in Table 1 are expected. A loss of light problem is normally not caused by the storage facility. These problems are normally external to the storage facility. Use the standard Fibre Channel isolation procedures (not included in this service guide) to restore light to the fiber cable connected to this fibre host card.
    Table 1. Fibre Channel host card port LEDs: link down (loss of light) indication
    Adapter Upper (or left) LED Lower (or right) LED
    8 Gb/s adapters Slow flash (LED is green) Off (LED is amber)
    16 Gb/s adapters Slow flash, green Slow flash, green
    Note: Slow flash is 1 per second.