Juniper Networks M10i manual Replacing a Cfeb, Removing a Cfeb

M10i Internet Router Hardware Guide

Figure 28: Installing a Fan Tray

Replacing a CFEB

One or two CFEBs can install into the uppermost slots in the rear of the chassis, as shown in Figure 2. Only one CFEB is active at a time, with the optional second CFEB in reset mode. CFEBs are hot-pluggable, as described in “Field-Replaceable Units (FRUs)” on page 3. Removing the standby CFEB has no effect on router function. If the active CFEB fails or is removed from the chassis, the effect depends on whether two CFEBs are installed:

■If there is only one CFEB, forwarding halts until the CFEB is replaced and functioning again.

■If there are two CFEBs, forwarding halts until the standby CFEB boots and becomes active.

In both cases, all components in the Packet Forwarding Engine reset, and it takes approximately one minute for the new CFEB to become active; synchronizing router configuration information can take additional time, depending on the complexity of the configuration.

To replace a CFEB, perform the following procedures:

■Removing a CFEB on page 90

■Installing a CFEB on page 91

Removing a CFEB

To remove a CFEB, follow this procedure (see Figure 29):

1.Place an electrostatic bag or antistatic mat on a flat, stable surface.

2.Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to one 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 Electrostatic Discharge Damage” on page 140.

3.If you are removing the active CFEB, press and hold the offline button on the faceplate until the amber LED labeled FAIL lights, which takes about 5 seconds.

90■ Replacing a CFEB