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Optical ILA Field-Replaceable Units

Field-replaceable units (FRUs) are components that you can replace at your site. The optical ILA FRUs are hot-removable and hot-insertable—you can remove and replace them without powering off the optical ILA or disrupting the optical ILA function.


Replace a failed fan module with a new fan module within 30 seconds of removal to prevent chassis overheating.

Table 1 lists the FRUs for the optical ILA and actions to take before removing them.

Table 1: Required Actions Before Removing a FRU from the Optical ILA


Required Actions Before Removal

Power supplies (2)

Disconnect the AC power and remove the AC power cord or cable for the power supply unit.

Disconnect the DC power and remove the power connector.


You need a minimum of one powered power supply for the optical ILA to operate properly..

Fan modules (3)


See Figure 1 shows the FRU panel on an optical ILA.

Figure 1: Optical ILA FRU PanelOptical ILA FRU Panel



Fan modules


ESD point


Power supplies


If you have a Juniper Care service contract, register any addition, change, or upgrade of hardware components at Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace existing components with the same type of component.