Installing The Redundancy Midplane - Juniper E Series Hardware Manual

ERX 7.0.x Hardware Guide
1.
2.

Installing the Redundancy Midplane

To install the redundancy midplane in a redundancy group:
CAUTION: If you do not use the halt command before removing or powering down
an SRP, the system's NVS card may become corrupted.
1.
WARNING: Turn off the E-series router before you install the redundancy midplane.
Working inside the router when it is on can lead to electric shock and serious burns.
2.
3.
4.
5.
6.
7.
CAUTION: A misaligned redundancy midplane can result in bent pins on the
backplane and midplane and poor contact between the I/O modules and the
redundancy midplane.
48
Installing Components for Line Module Redundancy
Install the spare line module in the lowest-numbered slot of the redundancy
group.
Install the other line modules in the remaining slots. (See "Installing Line and
I/O Modules" on page 44).
Enter the halt command.
See JUNOSe System Basics Configuration Guide, Chapter 5, Managing Line
Modules and SRP Modules for information about the halt command.
Turn off the power switches located on the power input module in the rear of
the system (see Figure 25).
Remove the I/O modules from the slots that the redundancy midplane will
span.
Place the redundancy midplane in the chassis so that it rests against the guides
below the chassis midplane (see Figure 25).
Align the screw holes in the redundancy midplane with the screw holes in the
guides so that the midplane covers the slots for the redundancy group.
Using a Phillips screwdriver and the screws provided, loosely attach, but do not
tighten, the redundancy midplane to the guides.
Carefully insert an I/O module in one slot to ensure that the redundancy
midplane is aligned correctly; then tighten the screws.