Foundation for the New IP Infrastructure The M20™ Internet backbone router is designed specifically for the specialized needs of high-growth Internet backbone providers. It features market-leading packet-forwarding performance, unparalleled port density and flexibility, and best-in-class Internet software. The router delivers the bandwidth required to grow backbones to OC-48/STM-16 speeds, while also providing flexible MPLS traffic engineering tools to ensure greater control over traffic and to
increase bandwidth efficiency. 

The M20 router supports 4 FPC slots that can accommodate up to 16 PICs. The M20 also includes a System and Switch Board (SSB) that houses the Internet Processor ASIC, an Intel-based Routing Engine (including a fixed flash drive, an IDE hard drive, and a removable PC flash card drive), redundant cooling fans, and two, redundant, load-sharing AC or DC power supplies. It ships with full documentation (CD-ROM).

      Internet Backbone Routers  

Foundation for the New M40 IP Infrastructure
Internet backbone router is designed specifically for the specialized needs of high-growth Internet backbone providers. It features market-leading packet-forwarding performance, unparalleled port density and flexibility, and best-in-class Internet software. The router delivers the bandwidth required to grow backbones to OC-48/STM-16 speeds, while also providing flexible MPLS traffic engineering tools to ensure greater control over traffic and to increase bandwidth efficiency.

The M40 router supports 8 FPC slots that can accommodate up to 32 PICs. The M40 also includes a System Control Board (SCB) that houses the Internet Processor ASIC, an Intel-based Routing Engine (including a fixed flash drive, an IDE hard drive, and a removable LS 120 floppy drive), redundant cooling fans, and two, redundant, load-sharing AC or DC power supplies. It ships with full documentation (CD-ROM).

The JUNOS policy language provides a rich set of route filtering tools for flexible and accurate configurations. It is easily adaptable to many applications since it is simple, consistent, and highly structured. You can test the policy configurations before committing them to a live network, thereby avoiding costly design and configuration errors. Once you commit the configuration, the JUNOS operating system updates only those prefixes and neighbors that are affected. In case a configuration is unstable, the JUNOS software supports the ability to roll back to a previous, stable configuration.

 

Performance and Reliability		Forwards packets at wire rate independently of packet size. Performance scales well with large, complex forwarding tables. Availability and high performance under all network conditions, including denial-of-service attacks. Performance maintained with value-added services, such as CoS.
Scalability		Efficiently performs route calculations in large-scale environments with numerous routing neighbors. Scales to support large numbers of routing table entries or MPLS labels without adversely affecting forwarding performance. OSPF and IS-IS IGP designed to scale networks to meet explosive demands. For MPLS, provides rapid signaling rates for optimal setup and recovery following a failure. Offers a fine level of control over the paths that traffic takes through the network.
Control		Uses MPLS for traffic engineering and multiservice integration for a service-enabled backbone. JUNOS BGP4 and policy implementations provide extensive flexibility and control over peering and route advertisements.
Density		Market-leading port density and flexibility. Performs at wire-rate speed for DS-3 up to OC-48/STM-16 circuits.

Enhanced VRRP monitors WAN circuits connected to the default WAN router and switches to a backup router in case of failure. This ability to have more than a single path to the outside world is particularly beneficial for hosting sites.