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“M40e Host Module Description” on page 23. For replacement instructions, see “Replacing
a Routing Engine in an M40e Router” on page 186.
Figure 15 on page 27 shows the Routing Engine location on the M40e router.
Figure 15: M40e Router Routing Engine Location
PCG 0
SFM 0
SFM 1
MCS 0
RE 0
RE 1
MCS 1
SFM 2
SFM 3
PCG 1
PCG 0
SFM 0
SFM 1
MCS 0
RE 0
RE 1
MCS 1
PCG 1
Do not install
an SFM
in this slot
Do not install
an SFM
in this slot
M160 router rear
M40e router rear
Routing engines
g004147
Routing engines
Related
Documentation
Installing a Routing Engine in an M40e Router on page 189
•
•
•
•
M40e Routing Engine Software Components on page 52
M40e Routing Engine 333
The Routing Engine (shown in Figure 16 on page 29) is a two-board system with the
following components:
•
CPU—Runs Junos OS to maintain the router's routing tables and routing protocols.
•
DRAM—Provides storage for the routing and forwarding tables and for other Routing
Engine processes.
•
CompactFlash card—Provides primary storage for software images, configuration files,
and microcode. The drive is a fixed CompactFlash card and is inaccessible from outside
the router.
•
Hard disk—Provides secondary storage for log files, memory dumps, and rebooting the
system if the CompactFlash card fails.
27
Copyright © 2010, Juniper Networks, Inc.
Chapter 2: M40e Hardware Components
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