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Chapter 5
M40 Internet Router Overview
The M40 Internet router provides high-speed forwarding performance, packet
processing, and port density for high-growth core IP networks. The M40 router
supports the JUNOS software which provides router configuration and monitoring.
(See Figure 5.)
Figure 5: M40 Router
The M40 router includes the router-specific System Control Board (SCB). The SCB
contains the Internet Processor II application-specific integrated circuit (ASIC) and
performs sampling, filtering, and packet forwarding decisions. The SCB processes
exception and control packets, monitors system components, and controls Flexible
PIC Concentrator (FPC) resets.
NOTE: See the End-of-sale and End-of-service Announcement for the M40 routing
platform and products at
https://www.juniper.net/support/eol/.
Front-rack mounting ear
Card cage with
FPCs with PICs
Craft interface display
Electrostatic
discharge point
Cable managment
system cover
Center rack-mounting ear
Routing Engine housing
Triple fan assembly
Cooling system exhaust
(upper impeller tray)
Front rack-mounting ear
Center rack-mounting ear
LS-120 drive
Power supplies
Electrostatic
discharge point
1268
Air filter (behind cover)
R
R
RearFront
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