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CHAPTER 5
Installing Modules
5-4
Slot Groups for the ERX-7xx Models
A slot group in an ERX-7xx model comprises one slot or two adjacent
slots. The groups for an ERX-7xx model consist of the following slots
(Figure 5-3):
• Slot group 1 – slots 2 and 3
• Slot group 2 – slot 4
• Slot group 3 – slot 5
• Slot group 4 – slot 6
Slots 0 and 1 are reserved for the SRP modules.
.
Figure 5-3 ERX-7xx model slot groups
Combinations of Line Modules
For information about allowed combinations of line modules, see E-Series
System Basics Configuration Guide, Chapter 5, Managing Line Modules
and SRP Modules.
OC48 Line Modules
The ERX-1440 router with the SRP-40G+ SRP module supports OC48
line modules. Other E-series routers do not support OC48 line modules.
An OC48 line module spans two slots in an ERX-1440 router. You can
install this line module only in slots 2–3 and slots 4–5. Other slots in the
system do not support this line module.
The corresponding OC48 Frame APS I/O module spans only one slot.
Install the I/O module in the lower of the slots (either slot 2 or slot 4) that
the line module spans.
1
2
3
4
0
5
6
Slot group 1
Slot group 2
Slot group 3
Slot group 4
SRP SRP
E3 ATM
OC3CE1 CE1
Chassis slots
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