Router User Manual

Installing ERX Routers
You can install an ERX-14xx model, an ERX-7xx model, and an ERX-310
router togeth
er in the same rack. (See Figure 15.)
CAUTION: If you install an ERX-7x x m o del or ERX-310 router directly above an
ERX-14xx mode
l in the same rack, you must in stall a plenum b etween t he ERX-7xx
model or ERX-310 router and the ERX-14xx model so that the air can circulate
between the systems. (See Figure 51.) This plenum is available from Junipe r
Networks.
If you install
an ERX-14xx model above an ERX-7xx model or ERX-310 router,
thereisnoneedtoinstallaplenumbetweentheunitsbecausetheERX-7xx
models and ERX-310 routers vent air out the side of the chassis.
Install h eavier systems, such as an ERX-14xx model, o n the bottom of the
rack. Mount l
ighter systems, such as the ERX-310 router, higher in the rack.
Rack-Mounted Installation 29