Technical Documentation
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Slot Numbering for an EX8216 Switch
An EX8216 chassis accepts 16 line cards, two Routing Engine (RE) modules, eight Switch Fabric (SF) modules, two fan trays, and six power supplies (AC or DC). All 16 slots for the line cards and the two slots for the RE modules run horizontally across the front of the chassis. The fan tray slots run vertically on the left of the chassis front. The six power supply slots run vertically across the front bottom of the chassis. The eight slots for the SF modules run vertically on the chassis rear.
Slot Numbering for RE Module Slots and Line Card Slots
The slot labels for the RE module slots and the line card slots appear in two columns on each fan tray. The labels are identical on both fan trays, allowing you to use either fan tray in either fan tray slot. You read the slot labels based on the location of the fan trays. On the top fan tray, read the inner column of labels. On the bottom fan tray, read the outer column of labels. Table 1 lists the slot numbers on the EX8216 fan trays and the components those slots accept.
Table 1: Slot Numbering on the EX8216 Fan Trays
Outer Slot Label (Read for Bottom Fan Tray) | Inner Slot Label (Read for Top Fan Tray) | Components Accepted in Slot |
|---|---|---|
7 | RE0 |
|
8 | RE1 |
|
9 | 0 | Line card |
10 | 1 | Line card |
11 | 2 | Line card |
12 | 3 | Line card |
13 | 4 | Line card |
14 | 5 | Line card |
15 | 6 | Line card |
Figure 1 shows the slot numbering on the fan trays:
Figure 1: Slot Numbering on the Fan Trays on an EX8216 Switch Chassis Front
Slots RE0 and RE1 accept only the RE modules. Depending on the switch configuration you have purchased, you install either one or two RE modules. See Routing Engine (RE) Module in an EX8216 Switch.
 | Note: We recommend that you install two RE modules for redundancy. If you install only one RE module, we recommend that you install it in slot RE0. See Installing an RE Module in an EX8216 Switch. |
Slots 0 through 15 accept one of the line cards available for EX8200 switches. See Installing a Line Card in an EX8200 Switch.
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 2 lists the slot numbers for the power supplies on an EX8216 switch. See AC Power Supply in an EX8200 Switch and DC Power Supply in an EX8200 Switch.
 | Caution: Mixing different types of power supplies in the same chassis is not a supported configuration. |
Table 2: Slot Numbering for Power Supply Slots on an EX8216 Switch Chassis Front
Slot Label | Components Accepted in Slot |
|---|---|
PSU 0 | Power supply |
PSU 1 | Power supply |
PSU 2 | Power supply |
PSU 3 | Power supply |
PSU 4 | Power supply |
PSU 5 | Power supply |
Figure 2 shows the slot numbering for the power supply slots in an EX8216 switch.
Figure 2: Slot Numbering for Power Supply Slots on an EX8216 Switch Chassis Front
| Note: Power supplies can be installed in any slot. You do not have to install them in serial order. See Installing an AC Power Supply in an EX8200 Switch and Installing a DC Power Supply in an EX8200 Switch. |
Slot Numbering for the SF Module Slots
Table 3 lists the slot numbers on the EX8216 chassis rear and the components those slots accept.
Table 3: Slot Numbering for the SF Modules on an EX8216 Switch Chassis Rear
Slot Label | Components Accepted in Slot |
|---|---|
SF7 | SF module |
SF6 | SF module |
SF5 | SF module |
SF4 | SF module |
SF3 | SF module |
SF2 | SF module |
SF1 | SF module |
SF0 | SF module |
Figure 3 shows the slot numbering for the SF module slots, which are on the rear of the EX8216 switch chassis.
Figure 3: Slot Numbering for the SF Module Slots on an EX8216 Switch Chassis Rear
Slots SF7 through SF0 (from left to right) accept SF modules. See Switch Fabric (SF) Modules in an EX8216 Switch. We recommend you install all eight SF modules in an EX8216 switch for normal operation. See Installing an SF Module in an EX8216 Switch.
