Juniper Networks EX8208 - Manual (Page 41)

NOTE: We recommend that you install two SRE modules for redundancy. If you install
only one SRE module, we recommend that you install it in the slot SRE0. See “Installing
an SRE Module in an EX8208 Switch” on page 155.
Slot SF accepts only the SF module. See “Switch Fabric (SF) Module in an EX8208
Switch” on page 28. An EX8208 switch can have either zero SF modules or one SF module
based on your switch configuration. The SF module is keyed so that it does not fit in any
other slot in the chassis. See “Installing an SF Module in an EX8208 Switch” on page 157.
Slot Numbering for the Power Supply Slots
The chassis has six vertical slots on its front bottom. You can install up to six power
supplies (either all AC or all DC) in these slots, which are labeled PSU 0 through PSU 5
(from left to right). Table 6 on page 15 lists the slot numbers for the power supplies on
an EX8208 switch. See “AC Power Supply in an EX8200 Switch” on page 40 and “DC
Power Supply in an EX8200 Switch” on page 48.
CAUTION: Mixing different types of power supplies in the same chassis is not a supported
configuration.
Table 6: Slot Numbering for Power Supply Slots on an EX8208 Switch Chassis Front
Components Accepted in Slot Slot Label
Power supply PSU 0
Power supply PSU 1
Power supply PSU 2
Power supply PSU 3
Power supply PSU 4
Power supply PSU 5
Figure 4 on page 16 shows the slot numbering for the power supply slots in an EX8208
switch.
15 Copyright © 2010, Juniper Networks, Inc.
Chapter 1: EX8208 Switch Overview