M40 Router Overview
NOTE: See the End-of-life (EOL) and End-of-sale (EOS) Notification Policy
and Procedures for the M40 router and products at
https://www.juniper.net/support/eol/. End of life (EOL) indicates that the
product has been removed from the price list and is no longer available for
purchase. End of support (EOS) indicates that no new support contracts are
available on these products and the last contract will expire on the EOS date
associated with each product. For more information about EOS or EOL
products, see the product support notification (PSN) hardware end-of-life
announcements.
The M40 router provides high-speed forwarding performance, packet processing, and
port density for high-growth core IP networks. The M40 router supports the Junos OS,
which provides router configuration and monitoring, see Figure 5 on page 13.
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.
PICs are available in supported media types, including Asynchronous Transfer Mode
(ATM), Channelized, DS3, E1, E3, T1, Ethernet, SONET/SDH, and IP services. The M40
router provides the bandwidth to grow networks to OC48c/STM16 speeds. The M20 and
M40 FPCs and PICs are interchangeable, and most of the PICs can also be used in the
M40e router. For more information about supported PICs and FPCs for each M Series
router type, see the appropriate PIC installation guide.
13Copyright © 2012, Juniper Networks, Inc.
Chapter 1: M Series Multiservice Edge Routers
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