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Overview of a Routing Matrix with a TX Matrix Plus Router


The TX Matrix Plus router is the centralized switch fabric of the routing matrix, which is a multiterabit routing system for interconnecting routers.

The routing matrix multichassis architecture provides scalable growth for aggregation and core services for voice, video, and data networks. It provides a flexible and cost-effective means to simplify large point-of-presence (POP) and central office environments. The routing matrix delivers high availability services from tunnel services, ATM, DS3, OC3/STM1, OC12/STM4, Gigabit Ethernet, 10-Gigabit Ethernet, 100-Gigabit Ethernet, OC48/STM16, OC192/STM64, and other high-speed interfaces.

The routing matrix leverages the intelligent virtual services capabilities of the Junos® operating system (Junos OS), which enables you to create multiple application-specific logical networks over a single physical topology. This gives you the ability to virtually separate traffic types that require unique network attributes—such as ATM or high-priority voice over IP (VoIP) and third-generation (3G) mobile traffic—from bulk transit IP traffic.

The router architecture cleanly separates control operations from packet forwarding operations. This design eliminates processing and traffic congestions, permitting the routing matrix to achieve terabit performance levels. Control operations in the routing matrix are performed by the host subsystem, which runs Junos OS to handle traffic engineering and configuration management. High availability, interchassis communications are provided by an Ethernet LAN that interconnects the host subsystems in the TX Matrix Plus router (also referred to as the switch-fabric chassis or the SFC) and the line-card chassis (LCC) routers.

A routing matrix based on a Juniper Networks® TX Matrix Plus router is a multichassis architecture composed of one TX Matrix Plus router and one of the following LCC configurations:

  • TXP-T1600 configuration—Supports up to four interconnected Juniper Networks T1600 Core Routers.

  • TXP-T1600-3D configuration—Supports up to eight interconnected Juniper Networks T1600 Core Routers.

  • TXP-T4000-3D configuration—Supports up to four interconnected Juniper Networks T4000 Core Routers.

  • TXP-Mixed-LCC-3D configuration—Supports the following combinations of T1600 and T4000 routers:

    • Six T1600 routers and one T4000 router

    • Four T1600 routers and two T4000 routers

    • Two T1600 routers and three T4000 routers

The TXP-T1600-3D, TXP-T4000-3D, and TXP-Mixed-LCC-3D configurations use 3D SIBs (TXP-F13-3D and TXP-F2S-3D SIBs on the SFC and TXP-LCC-3D SIB on the LCC). For more details on the hardware components used in the routing matrix with a TX Matrix Plus router, see the TX Matrix Plus Router Hardware Guide  .