Installing A Routing Engine In An Ex9253 Switch - Juniper EX9253 Hardware Manual

SEE ALSO
Host Subsystem in an EX9253 Switch | 15

Installing a Routing Engine in an EX9253 Switch

Before you begin to install an RE:
• Ensure you understand how to prevent electrostatic discharge (ESD) damage (see
Electrostatic Discharge Damage
Ensure that you have the following parts and tools available:
• An ESD wrist strap
• A Phillips (+) screwdriver, number 2
The Routing Engine (RE) in an EX9253 switch is a hot-removable and hot-insertable field-replaceable
unit (FRU). You can remove and replace it while the switch is running without turning off power to the
switch or disrupting switching functions. The REs are installed on the front panel. The REs are installed
in the slots labeled RE0 and RE1 on the front panel of the chassis.
To install an RE:
1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the switch.
2. Taking care not to touch RE components, remove the RE from its bag.
3. Lift the RE, and position it in the chassis with the faceplate facing you and the sides of the RE aligned
with the guides in the RE slot on the switch chassis (see
4. Slide the RE into the chassis until you feel resistance, carefully ensuring that it is correctly aligned.
5. Grasp the ejector handle and gently slide the RE fully into the slot using both hands until the RE is
fully seated.
6. Verify that the OK/FAIL LED on the RE faceplate is lit steadily. If the OK/FAIL LED is lit red, remove
and install the RE again.
7. Check the status of the RE by issuing the CLI command show chassis routing-engine command:
user@host> show chassis routing-engine
Routing Engine status:
Slot 0:
Current state
Election priority
Temperature
).
Master
Master (default)
46 degrees C / 114 degrees F
Figure 52 on page 136).
Prevention of
134