MX960 Router OverviewThe MX960 3D Universal Edge Router is anEthernet-optimized edge router that providesboth switching and carrier-class Ethernet routing. The MX960 router has a capacity of up to 1,320 gigabits per second (Gbps), full duplex.
Count…The MX960 router enables a wide range ofbusiness and residential applications andservices, including high-speed transport andVPN services, next-generation broadbandmultiply services, and high-volume Internet datacenter internetworking. The MX960 chassis provides redundancy and resiliency. The hardware system is fully redundant, including power supplies, fan trays, Routing Engines, and Switch Control Boards.
Count…The MX960 router is 16 rack units (U) tall. Threerouters can be stacked in a single floor-to-ceilingrack, for increased port density per unit of floorspace. The router provides 14 slots that can be populated with up to 12 Dense Port Concentrators (DPCs) or Modular Port Concentrators (MPCs), six Flexible PIC Concentrators (FPCs), and two Switch Control Boards (SCBs) in nonredundant fabric configurations.
Count… MX960 PIC MX960 Host Subsystem MX960 Switch Control Board (SCB) MX960 Routing Engine (RE) MX960 Craft Interface Description MX960 Power System Description MX960 Cooling System MX960 Cable Manager
MX960 Chassis DescriptionThe router chassis is a rigid sheet metalstructure that houses all the other router. Thechassis installs in many types of racks, including800-mm deep (or larger) enclosed cabinets,standard19-in. equipment racks, or telco open-frame racks.
MX960 Rack-MountingHardwareThe rack-mounting hardware for the MX960 routerincludes: The large mounting shelf for mounting in four- post racks, cabinets, and open-frame racks. The small mounting shelf for front-mounting in a four-post rack or cabinet. Front-mounting flanges on the front of the chassis for front-mounting in a four-post rack or cabinet. Two center-mounting brackets attached to the center of the chassis for center-mounting in an open-frame rack. For an open-frame rack, center- mounting is preferable because of the more even distribution of weight.
MX960 Midplane DescriptionThe midplane is located toward the rear of thechassis and forms the rear of the card cage.The midplane performs the following major functions: Data Path—Data packets are transferred acrossthe midplane between the line cards through thefabric ASICs on the SCBs. Power Distribution—The router power suppliesconnect to the midplane, which distributes power toall the router components. Signal Path—The midplane provides the signalpath to the line cards, SCBs, Routing Engines, andother system components for monitoring and controlof the system.
MX960 Dense PortConcentrator A Dense Port Concentrator (DPC) is optimized for Ethernet density. The DPC assembly combines packet forwarding and Ethernet interfaces on a single board, with either two or four 10-Gbps Packet Forwarding Engines.
Count…The router has 11 dedicated DPC slots. DPCs installvertically in the front of the router. The dedicated DPCslots are numbered 0 though 5, and 7though11, left to right. An additional multifunction slotlabeled2/6 supports either an SCB or a DPC. ADPC canbe installed in any slot that supports DPCs. You can installany combination of DPC types in the router.
DPC ComponentsEach DPC consists of the following components: DPC cover, which functions as a ground plane and a stiffener Fabric interfaces Two Giga bit Ethernet interfaces that allow control information, route information, and Statistics to be sent between the Routing Engine and the CPU on the DPCs Two interfaces from the SCBs that enable the DPCs to be powered on and controlled Physical DPC connectors Two or four Packet Forwarding Engines Mid plane connectors and power circuitry Process or sub system, which includes a1.2-GHz CPU, system controller, and1GB of SDRAM Online button—Takes the DPC online or offline when pressed LEDs on the DPC face plate.
MX960 Modular Port ConcentratorModular Port Concentrators (MPCs) provide packetforwarding services. The MPCs are inserted into aslot in a router. Modular Interface Cards (MICs) provide the physical interfaces and install into the MPCs. You can install up to two MICs of different media types on the same MPC as long as the MPC supports those MICs. The MX960 router supports up to 12 MPCs.
Count…When a slot is not occupied by an MPC or other line card, you mustinsert a blank DPC panel to fill the empty slot and ensure propercooling of the system.MPCs are hot-removable and hot-insert able. When you install anMPC in an operating router, the Routing Engine downloads theMPC software, the MPC runs its diagnostics, and the PacketForwarding Engines housed on the MPC are enabled. Forwardingon other MPCs continues uninterrupted during this process.
MPC ComponentsEach MPC consists of the following components: MPC card carrier, which includes two MIC slots (excludes the fixed configuration MPC) Fabric interfaces Two Giga bit Ethernet interfaces that allow control information, route information, and statistics to be sent between the Routing Engine and the CPU on the MPCs Two interfaces from the SCBs that enable the MPCs to be powered on and controlled Physical MPC connectors Up to four Junos Trio chipsets, which perform control functions tailored to the MPC’s media type. Mid plane connector sand power circuitry Process or subsystem, which includes a1.5-GHz CPU, system controller, and1GB of SDRAM. Online button which takes the MPC online or offline when pressed OK/Fail LED on the MPC face plate.
MX960 Modular InterfaceCardModular Interface Cards (MICs) install intoModular Port Concentrators (MPCs) and providethe physical connections to various networkmedia types. MICs allow different physicalinterfaces to be supported on a single line card.MICs are hot-removable and hot-insertable. Youcan install up to two MICs in the slots in eachMPC.
MX960 Switched Fabric (SF)Switched Fabric is a network topology wherenetwork nodes connect with each other via oneor more network switches.
Count… Each PFE (Packet Forwarding Engines) is connected to all Fabric Planes. Diagram shows only two DPCs (FPCs) in the chassis. All other DPCs are also connected in same way. 4 Active Planes and 2 Spare Planes.
MX960 Flexible PIC ConcentratorA Flexible PIC Concentrator (FPC) occupies twoDense Port Concentrator (DPC) slots on an MXSeries router. The MX960 router has 11 dedicatedDPCs lots and one multi functions lot that supportseither a DPC, FPC, or Switch Control Board (SCB).The dedicated DPC slots are numbered 0 though5, and 7 though 11, left to right. The multi functionslot is labeled 2/6.Up to six FPC scan be installed vertically in any twoslots that support FPCs. The interface correspondsto the lowest numbered DPC slot for which the FPCis installed.
FPC ComponentsEach FPC consists of the following components: FPC card carrier, which includes two PIC slots Up to two Packet Forwarding Engines, each consisting of one I-chip for Layer 3 processing and one Layer 2 network processor Mid plane connectors and power circuitry Process or subsystem (PMB), which includes a1.2- GHz CPU, system controller, 1GB of SDRAM, and two Giga bit Ethernet interfaces Two LEDs, located on the craft interface above the FPC, that display the status of the FPC and are labeled OK and FAIL FPC online/offline button, located on the craft interface above the FPC
MX960 PICPICs provide the physical connection to various networkmedia types, receiving incoming packets from thenetwork and transmitting out going packets to thenetwork. During this process, each PIC performs framingand line-speed signaling for its media type. Beforetransmitting out going data packets, the PICsencapsulate the packets received from the FPCs. EachPIC is equipped with an ASIC that performs controlfunctions specific to the media type of that PIC.PICs are hot-removable and hot-insert able. Up to twoPICs can be installed in the slots in each FPC. Up to sixFPCs can be installed in an MX960 router. PICs used inan FPC2 have captive screws at their upper and lowercorners. PICs used in a Type 3 FPC have an upper ejector handle and a lower captive screw.
MX960 Host SubsystemThe host subsystem provides the routing andsystem management functions of the router. Youcan install one or two host subsystems on therouter. Each host subsystem functions as a unit;the Routing Engine must be installed directly intothe Switch ControlBoard.
MX960 Switch Control BoardThe Switch Control Board (SCB) provides thefollowing functions: Powers on and powers off DPCs, FPCs, and MPCs Controls clocking, system resets, and booting Monitor sand controls system functions, including fan speed, board power status, PDM status and control, and the craft interface Provides inter connections to all the DPCs, FPCs, and MPCs with in the chassis through the switch fabrics integrated into the SCB
SCB ComponentsEach SCB consists of the following components: Chassis management Ethernet switch I2C bus logic, used for low-level communication with each component Component redundancy circuitry Control Board/Routing Engine master ship mechanism Gigabit Ethernet switch that is connected to the embedded CPU complex on all components
Count… Switch fabric—Provides the switching functions for the DPCs, FPCs, and MPCs Control FPGA—Provides the Peripheral Component Interconnect (PCI) interface to the Routing Engine 1000Base-T Ethernet controller—Provides a 1- Gbps Ethernet link between the Routing Engines Ethernet switch—Provides 1-Gbps link speeds between the Routing Engine and the DPCs, FPCs, and MPCs Circuits for chassis management and control Power circuits for the Routing Engine and SCB LEDs—Provide status
MX960 Routing EngineIf the host system is redundant, the backupRouting Engine is hot-removable and hot-insertable, but the master Routing Engine is hot-pluggable. A Routing Engine that is not redundant is hot- pluggable.
Supported Routing EnginesThe MX960 router supports the following RoutingEngines: RE-S-1300-2048 supported for Junos OS Release 8.2 and later. RE-S-2000-4096 supported for Junos OS Release 8.2 and later. RE-S-1800x2 supported for Junos OS Release 10.4 and later. RE-S-1800x4 supported for Junos OS Release 10.4 and later.
Routing Engine FunctionThe Routing Engine runs the Junos OS.Software processes that run on the RoutingEngine maintain the routing tables, manage therouting protocols used on the router, control therouter interfaces, control some chassiscomponents, and provide the interface forsystem management and user access to therouter.
Routing Engine SlotsYou can install one or two Routing Engines in therouter. Each Routing Engine must be installeddirectly in to an SCB. A USB port on the RoutingEngine accepts a USB memory device thatallows you to load Junos OS. The Routing Engines install in to the front of the chassis in vertical slots directly into the SCBs labeled 0 and1.
Count… If two Routing Engines are installed, one functions as the master and the other acts as the backup. If the master Routing Engine fails or is removed and the backup is configured appropriately, the backup takes over as the master. On the MX960 router, a Routing Engine installed in SCB slot 2/6 receives no power and supplies no additional routing functions. If no SCB is installed in slot2/6, install a blank panel in the slot.
Routing Engine InterfacePortsThree ports, located on the right side of therouting engine, connect the Routing Engine toone or more external devices on which systemadministrators can issue Junos OS command-line interface (CLI) commands to manage therouter.The ports with the indicated labels function asfollows:1. AUX2. CONSOLE3. ETHERNET
Count… AUX—Connects the Routing Engine to a laptop, modem, or other auxiliary device through a serial cable with an RJ-45 connector. CONSOLE—Connects the Routing Engine to a system console through a serial cable with an RJ-45 connector. ERNEETHT—Connects the Routing Engine through an Ethernet connection to a management LAN (or any other device that plugs into an Ethernet connection) for out-of-band management. The port uses an auto sensing RJ-45 connector to support 10-Mbps or100 Mbps connections. Two small LEDs on the bottom of the port indicate the connection in use: the LED flashes yellow or green for a10-Mbps or100-Mbps connection, and the LED is light green when traffic is passing through the port.
Routing Engine BootSequenceThe router is shipped with the Junos OS preinstalledon the Routing Engine. There are three copies ofsoftware:1. One copy on the CompactFlash card in the Routing Engine.2. One copy on the hard disk in the Routing Engine.3. One copy on a USB flash drive that can be inserted into the slot on the Routing Engine faceplate. The Routing Engine boots from the storage media in this order: the USB device (if present), then the CompactFlash card, then the hard disk, then the LAN. Normally, the router boots from the copy of the software on the CompactFlash card.
MX960 Craft InterfaceThe craft interface allows you to view status andtroubleshooting information at a glance and to performmany system control functions. It is hot-insert able andhot-removable.The craft interface is located on the front of the routerabove the upper fan tray and contains LEDs for the routercomponents, the alarm relay contacts, and alarm cutoffbutton.
MX960 Power SystemThe MX960 router uses either AC or DC powersupplies. The MX960 router is configurable withthree or four normal-capacity AC powersupplies, up to four high-capacity DC powersupplies, and up to four high-capacity AC powersupplies. The power supplies connect to the midplane,which distributes the different output voltagesproduced by the power supplies to the routercomponents, depending on their voltagerequirements.
MX960 Cooling SystemThe cooling system consists of the followingcomponents:1. Upper front fan tray2. Lower front fan tray3. Front air filter The cooling system components work togetherto keep all router components within theacceptable temperature range.
MX960 Cable ManagerThe standard cable manager is a tray locatedbelow the line-card cage, which has a row offourteen dividers for securing the cables for eachDense Port Concentrator (DPC), Modular PortConcentrator (MPC), Modular Interface Card(MIC), or PIC.
Installing an MX960 RouterTo install the MX960 router follow these steps:1. Prepare your installation site2. Review the safety guidelines3. Unpack the router and verify the parts4. Install the mounting hardware5. Lift the router on to the rack. Because of the weight of the router, we recommend that you use a mechanical lift6. Connect cables to the network and external devices7. Connect the grounding cable8. Connect the AC power cord or DC power cables9. Power on the router10. Perform the initial system configuration
Tools and Parts Required to Maintain the MX960 RouterTo maintain hardware components, you needthe following tools and parts:1. ESD grounding wrist strap2. Flat-blade (–) screwdriver3. Phillips (+) screwdriver, number 14. Phillips (+) screwdriver, number 2
Troubleshooting Resources for MX960 RoutersThese are the resources which are helpful ontroubleshooting for MX960 routers:1. Command-Line Interface2. Chassis and Interface Alarm Messages3. Alarm Relay Contacts4. Craft Interface LEDs5. Component LEDs6. Networks Technical Assistance Center
MX960 Field-ReplaceableUnitsField-replaceable units (FRUs) are routercomponents that can be replaced at the customersite. Replacing most FRUs requires minimal routerdowntime. The router usesthe following types of FRUs: Hot-removable and hot-insert able FRUs—Youcan remove and replace these components withoutpowering off the router or disrupting the routingfunctions. Hot-pluggable FRUs—You can remove andreplace these components without powering off therouter, but the routing functions of the system areinterrupted when the component is removed.
Hot-Removable and Hot-Insert ableFRUs1. Air filter2. Craft interface3. Backup Switch Control Board (SCB) (if redundant)4. Master Switch Control Board (SCB) (if nonstop active routing is configured)5. Backup Routing Engine (if redundant)6. Master Routing Engine (if nonstop active routing is configured)7. Dense Port Concentrators (DPCs)8. Flexible PIC Concentrators (FPCs)9. Modular Port Concentrators (MPCs)10. Modular Interface Cards (MICs)11. PICs12. AC and DC power supplies (if redundant)13. Fan tray
Hot-Pluggable FRUs1. Master Switch Control Board (SCB) (if nonstop active routing is not configured)2. Master Routing Engine (if nonstop active routing is not configured)3. Switch Control Board (SCB) (non redundant)4. Routing Engine (non redundant)
General Safety Guidelines of Hardware EquipmentThe following guidelines help ensure your safety and protectthe hardware equipment from damage. The list of guidelinesmight not address all potentially hazardous situations in yourworking environment, so be alert and exercise good judgmentat all times. Make sure that only authorized service personnel perform other system services. Keep the area around the chassis clear and free from dust before, during, and after installation. Keep tools away from areas where people could trip over them while walking. Do not wear loose clothing or jewelry, such as rings, bracelets, or chains, which could become caught in the chassis. Wear safety glasses if you are working under any conditions that could be hazardous to your eyes. Do not perform any actions that create a potential hazard to people or make the equipment unsafe.
Count… Never attempt to lift an object that is too heavy for one person to handle. Never install or manipulate wiring during electrical storms. Never install electrical jacks in wet locations unless the jacks are specifically designed for wet environments. Operate the hardware equipment only when the chassis is properly grounded. Do not open or remove chassis covers or sheet metal parts. Do not push or force any objects through any opening in the chassis frame. Such an action could result in electrical shock or fire. Avoid spilling liquid onto the chassis or onto any hardware component. Such an action could cause electrical shock or damage the hardware equipment. Avoid touching uninsulated electrical wires or terminals that have not been disconnected from their power source. Such an action could cause electrical shock.
Tools and Parts Required toRemove Components from anMX960 RouterTo remove components from the router or the router froma rack, you need the following tools and parts:1. 2.5-mm flat-blade (–) screwdriver, for detaching alarm relay terminal block2. 7/16-in. (11 mm) nut driver3. Blank panels to cover empty slots4. Electrostatic bag or antistatic mat, for each component5. Electrostatic discharge (ESD) grounding wrist strap6. Flat-blade (–) screwdriver7. Mechanical lift, if available8. Phillips (+) screwdrivers, numbers 1 and 29. Rubber safety cap for fiber-optic interfaces or cable10. Wire cutters