M40 Internet Router Overview

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/.

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.

Physical Interface Cards (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 Internet router. For more information about supported PICs and FPCs for each M-series router type, see the appropriate PIC installation guide.

The M40 router Internet processor II ASIC forwards packets at a throughput rate of up to 40 Gigabits per second (Gbps). The ASIC technology provides such packet processing as route lookups, filtering, sampling, rate limiting, load balancing, buffer management, switching, and encapsulation and de-encapsulation of IP services. The M40 router delivers the bandwidth required to grow networks to OC48c/STM16 speeds in a cost-effective manner.