Slot Groups; Slot Groups For The Erx-1410 Router - Juniper E Series Hardware Manual

ERX 7.0.x Hardware Guide
Figure 19: Orientation of Line Modules in E-series Routers
For details about available line modules and compatibility between line
modules and SRP modules, see E-series Module Guide.

Slot Groups

The slots in the ERX-1410 router and the ERX-7xx models are divided into groups.
The number of groups and number of slots per group depend on the system.
There are no slot groups in the ERX-1440 router or the ERX-310 router.
In the ERX-310 router, slot 0 contains the SRP module and slots 1
and 2 each contain a line module.

Slot Groups for the ERX-1410 Router

A slot group in the ERX-1410 router comprises three adjacent chassis slots. The
groups for the ERX-1410 router consist of the following slots (Figure 20):
Slots 6 and 7 are reserved for the SRP modules.
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Overview
ERX-14xx model
Slot group 1—Slots 0 through 2
Slot group 2—Slots 3 through 5
Slot group 3—Slots 8 through 10
Slot group 4—Slots 11 through 13
ERX-7xx model
ERX-310 router