Juniper E SERIES BROADBAND SERVICES ROUTERS 11.3.X - E120 AND E320 HARDWARE GUIDE REV 9-29-2010 Hardware Manual page 45

Figure 17: E120 Slot Numbering
Copyright © 2010, Juniper Networks, Inc.
Figure 16: E320 Slot Numbering
In the E120 router, modules mount horizontally in a 9–slot chassis, numbered bottom
to top (0–10). See Figure 17 on page 29 and Table 3 on page 29 for slot locations.
Because two half-height IOAs can be installed in a slot, the right bay is designated
Adapter 0 and the left bay is designated Adapter 1. The router does not have slot groups.
Table 3: Module Slot Locations
Component
LM (line module)
SRP module
Blank filler panel
SFM module
Chassis Location
Front
Front
Front
Front
Chapter 4: Installing Modules
Slot
E320 router—0–5, 11–16
E120 router—0–5
6, 7
Non-numbered empty slot
between 6 and 7
8, 9, 10
29