Juniper Networks ERX-1440, ERX-1410, ERX-700, ERX-705 manual Cleaning the System, Replacing Fan Trays

Cleaning the System	7-9
ERX Edge Routers

•Field descriptions

›gigabitEthernet interfaceSpecifier – status of the hardware on this interface

•up – hardware is operational

•down – hardware is not operational

›Administrative status – operational state that you configured for this interface

•up – interface is enabled

•down – interface is disabled

•Example

host1:vr2#show interfaces gigabitEthernet2/0

gigabitEthernet2/0 is Up, Administrative status is Up

Cleaning the System

Warning: Do not insert any metal object, such as a screwdriver, or place your hand into an open slot or the backplane when the ERX system is on. Remove jewelry (including rings, necklaces, and watches) before working on equipment that is connected to power lines. These actions prevent electric shock and serious burns.

Caution: When cleaning the system, wear an antistatic wrist strap connected to the system’s ESD grounding jack. This action helps to protect modules from damage by electrostatic discharge.

Dust is attracted to the side of the system on which the air intake vent is situated (see Figure D-2). Clean this side of the system with a dry cloth every couple of weeks to prevent excessive accumulation of dust. This cleaning will maintain the efficiency of the cooling system and prevent damage to electronic components.

Replacing Fan Trays

A tray of cooling fans provides forced air cooling for components in the ERX-1400 series and ERX-700 series. The location of the fans depends on the model. The ERX-700 series and ERX-1400 series support hot-swapping of the fan tray. Hot-swapping allows you to replace the fan tray without powering down the system. However, if you do not replace the fan tray within a few minutes, the system will go into thermal protection mode. For information about thermal protection mode, see Monitoring Temperatures of Modules in Chapter 8, Troubleshooting.

Caution: If the FAN FAIL LED on the SRP module is illuminated and none of the fans are spinning when you remove the fan tray, power down the system until a new fan tray is available. Operating an ERX system with inadequate air circulation may damage the modules.