M160 Internet Router Hardware Guide
Installing a Routing Engine
NOTE: If two Routing Engines are installed, they must both be the same version.
To installa Routing Engine, follow this procedure (see Figure 86):
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wris t and
connect the strap toone of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see
“Preventing ElectrostaticDischarge Damage” on page 226.
2. Verify thatthe extractor clip at each end of the Routing Engine is flipped
towardthe outer edge of the unit. If necessary,use your thumbs to push and
hold the red tabon each extractor clip toward the outer edge,then push the
ends of the extractor clipsoutward.
3. Place one hand under the Routing Engine tosupport it and grasp one of the
extractor clips on the faceplate with the other hand.
4. Align the rear of the RoutingEngine with the guide rails inside the chassis
and slide it in completely.
CAUTION: Align the Routing Engine carefullywith the guide rails and push it in
evenly.Damage can result if it gets lodged in the rails because of uneven movement.
5. Press the extractorclip at each end of the Routing Engine inward to seat the
unit firmly in the chassis.
6. Check the host module LEDs on the craft interface to verify that the green
LED labeled ONLINE is lit for the host module to which the Routing Engine
belongs (Figure 11 showst he LEDs).
You can also verify correctRouting Engine functioning by issuing the
show chassis routing-engine command described in Maintaining Host Module
Components on page 131.
7. Reinstallt herear component cover and tighten the thumbscrew ateach corner
to secure it tothe chassis. For complete instructions, see “Reinstallingthe Rear
Component Cover” on page 109.
CAUTION: To maintain proper airflow and provide electromagnetic shield ing, do
not operate the routerwithout the rear component cover in place.
168 Replacing Host Module Components