Line Cards Supported on MX Series Routers
Juniper Networks MX Series 5G Universal Routing Platforms process incoming and outgoing packets using:
Dense Port Concentrator (DPC)
Flexible PIC Concentrator (FPC) with Physical Interface Card (PIC)
Modular Port Concentrator (MPC) with a Modular Interface Card (MIC)
Switch Control Board (SCB, SCBE, SCBE2, SCBE3)
Provides multiple physical interfaces and Packet Forwarding Engines (PFEs) on a single board that installs into a slot within the MX240, MX480, and MX960 routers.
Provides physical interfaces for MX240, MX480, and MX960 routers.
Provides physical interfaces for MX2000 series routers.
Maximum Supported on MX2020
Maximum Supported on MX2010
Maximum Supported on MX960
Maximum Supported on MX480
Maximum Supported on MX240
FPCs and PICs
A Flexible PIC Concentrator (FPC) occupies two Dense Port Concentrator (DPC) slots on an MX240, MX480, MX960 router. Each FPC supports up to two Physical Interface Cards (PICs). FPCs install vertically in the MX960 router chassis, and horizontally in the MX480 and MX240 router chassis. The maximum number of supported FPCs varies per router:
Physical Interface Cards (PICs) provide physical interfaces for MX240, MX480, MX960 routers. They install into the Flexible PIC Concentrators (FPCs). PICs and FPCs function similarly to MICs and MPCs. The maximum number of supported PICs varies per router:
A Dense Port Concentrator (DPC) provides multiple physical interfaces and Packet Forwarding Engines (PFEs) on a single board that installs into a slot within the MX240, MX480, and MX960 routers. DPCs install vertically in the MX960 router chassis and horizontally in the MX480 and MX240 router chassis. The maximum number of supported DPCs varies per router:
MX960 router— up to 12 DPCs
MX480 router— up to 6 DPCs
MX240 router— up to 3 DPCs
In the Junos OS CLI, you use the FPC syntax to configure or display information about DPCs, and you use the PIC syntax to configure or display information about Packet Forwarding Engines on the DPCs.
In addition to Layer 3 routing capabilities, the DPCs also have many Layer 2 functions that allow MX Series routers to be used for many virtual LAN (VLAN) and other Layer 2 network applications.
MPCs and MICs
Modular Port Concentrators (MPCs) with Modular Interface Cards (MICs) provide packet forwarding services and physical interfaces for MX routers. MICs install into MPCs and function similarly to PICs and FPCs. MPCs install vertically in the MX2020, MX2010, MX2008, and MX960 router chassis, and horizontally in the MX480 and MX240 router chassis. On MX5, MX10, MX40, MX80, and MX104 routers, MICs install directly into the router chassis. There are also fixed-configuration MPCs, with built-in network ports and services functionality. The maximum number of supported MPCs varies per MX router and hardware configuration:
MX2020 router— up to 20 MPCs
MX2010 router— up to 10 MPCs
MX960 router— up to 12 MPCs
MX480 router— up to 6 MPCs
MX240 router— up to 3 MPCs
MX80 router— .
The MX80 router is available in a modular configuration chassis (MX80) or fixed configuration chassis (MX80-48T). Both chassis have a fixed 10-Gigabit Ethernet MIC with four ports for uplink connections. The modular MX80 chassis has two dedicated slots for MICs. The fixed configuration MX80 router has an additional 48 10/100/1000Base-T Ethernet ports.
Switch Fabric Boards (SFB, SFB2, SFB3)
Switch Fabric Boards (SFBs) provide increased fabric bandwidth per slot. Up to eight SFBs, SFB2s, or SFB3s can be installed in an MX2020 or MX2010 router. The SFBs install vertically into the front of the chassis in the slots labeled 0 through 7.
All switch fabric boards in the chassis must be the same type. Mixed mode is not supported.
Switch Control Boards
Switch Control Boards (MX-SCB, MX-SCBE, MX-SCBE2, and MX-SCBE3) provide full line-rate performance and redundancy without a loss of bandwidth. MX-series SCBs feature an integrated switch fabric that connects to all slots in the chassis in a nonblocking architecture. The SCBs house the routing engine, control power to MPCs, monitor and control system functions such as fan speed and the system front panel, and manage clocking, resets, and boots. The SCB is a single-slot card and has a carrier for the routing engine on the front.
SCBs install vertically in the MX2020, MX2010, and MX960 chassis, and horizontally in the MX480 and MX240 chassis. The number of supported SBCs varies per router:
MX240 and MX480 routers— 2 SCBs for 1 + 1 MX SCB redundancy when used with the DPC line cards
MX960 router— 3 SCBs for 2 + 1 redundancy when used with the DPC line cards
MX2010 and MX2020 routers— 8 SCBs
The MX2000 ADC is a special line card adapter (ADC) that enables MX2010 and MX2020 routers to use smaller form-factor MPCs (MPC1E, MPC2E, and MPC3E). The ADC is merely a shell that accepts line cards in the front and converts power and switch fabric in the rear. ADCs install vertically in the MPC slot on the front of the router. For more information about the MX2000 ADC, see MX2000 Adapter Card (ADC) Description.
Routing Engines and CB-REs
Routing engines and Control Boards with Routing Engines (CB-REs) provide the software processes that run Junos OS. The routing engine maintains the routing tables, manages the routing protocols used on the router, controls the router interfaces, controls some chassis components, and provides the interface for system management and user access to the router. Each CB-RE is a combined Routing Engine and Switch Control Board in one unit.