M320 Router Description

The M320 Multiservice Edge Router is a high-density edge aggregation, routing, and service creation platform that builds on Juniper Networks service-built edge design. Constructed with separations between the control plane, forwarding plane, and services plane, the router supports multiple services on a single platform. The Junos OS runs on a control subsystem with dedicated hardware, ensuring that control functions are performed without affecting the forwarding subsystem. Forwarding and packet processing operations in the router are performed by dedicated programmable ASICs that enable the router to achieve data forwarding rates that match current fiber-optic capacity. This design eliminates processing and traffic bottlenecks, permitting the router to achieve high performance.

The router can be deployed in core, peering, and data center applications, but is optimized for dense edge aggregation and service creation. The M320 router can provide a single point of edge aggregation for thousands of customers over any access type, including ATM, Frame Relay, Ethernet, and TDM, at any speed from DS0 up to OC192/STM64 and 10-Gigabit Ethernet.

The router is a half-rack chassis that supports up to eight Flexible PIC Concentrators (FPCs) providing up to 64 SONET/SDH OC48/STM16, 16 SONET/SDH OC192/STM64, or 160 Gigabit Ethernet ports for the router. In a standalone configuration, the Router's maximum aggregate throughput is 320 gigabits per second (Gbps), half duplex. The routersupports up to eight of these FPCs:

• Type 1 FPCs—Rated at 4 Gbps full duplex, supports up to four PICs.
• Type 2 FPCs—Rated at 16 Gbps full duplex, supports up to four PICs.
• Type 3 FPCs—Rated at 20 Gbps full duplex, supports up to two PICs, including higher-speed PICs.

The router can operate with any FPC type in any slot. Type 1 FPCs and Type 2 FPCs each support four PICs, and Type 3 FPCs supports two PICs.