MX480 Interface Modules—FPCs and PICs
MX480 Flexible PIC Concentrator (FPC) Description
A Flexible PIC Concentrator (FPC)
occupies two DPC slots on an MX Series router. The router has six
dedicated DPC slots that are numbered
5, bottom to top. Up to three FPCs
can be installed horizontally on the front of the router (see Figure 1). The interface corresponds to the
lowest numbered DPC slot for which the FPC is installed.
Figure 2 shows the typical FPCs supported on the MX480 router.
If a slot is not occupied by a DPC, an FPC, or an SCB, a blank panel must be installed to shield the empty slot and to allow cooling air to circulate properly through the router.
Each FPC supports up to two PICs. On an FPC2, one Packet Forwarding Engine receives incoming packets from the PICs installed on the FPC and forwards them through the switch planes to the appropriate destination port. On an FPC3, two Packet Forwarding Engines receive incoming packets from the PICs installed on the FPC and forwards them through the switch planes to the appropriate destination port. The FPCs interface with the power supplies and SCBs.
FPCs are hot-removable and hot-insertable, as described in MX480 Component Redundancy. When you install an FPC into a functioning router, the Routing Engine downloads the FPC software, the FPC runs its diagnostics, and the PICs, housed on the FPC, are enabled. Forwarding continues uninterrupted during this process. When you remove or install an FPC, packet forwarding between other DPCs or FPCs is not affected.
Each 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
Midplane connectors and power circuitry
Processor subsystem (PMB), which includes a 1.2-GHz CPU, system controller, 1 GB of SDRAM, and two Gigabit Ethernet interfaces
Two LEDs, located on the craft interface above the FPC, that display the status of the FPC and are labeled
FPC online/offline button, located on the craft interface above the FPC
MX480 Flexible PIC Concentrator (FPC) LEDs
Two LEDs, located on the craft interface above the FPC, that
display the status of the FPC and are labeled
FAIL. For more information about the FPC
LEDs located on the craft interface, see FPC LEDs on the MX480 Craft Interface.
FPCs Supported by MX240, MX480, and MX960 Routers
An FPC occupies two slots when installed in an MX240, MX480, or MX960 router. The maximum number of supported FPCs varies per router:
MX960 router—6 FPCs
MX480 router—3 FPCs
MX240 router—1 FPC
Table 1 lists FPCs supported by MX480 routers.
Table 1: FPCs Supported by MX480 Routers
FPC Model Number
Maximum Number of PICs Supported
Maximum Throughput per FPC (Full-duplex)
First Junos OS Release
MX480 PIC Description
PICs provide the physical connection to various network media types, receiving incoming packets from the network and transmitting outgoing packets to the network. During this process, each PIC performs framing and line-speed signaling for its media type. Before transmitting outgoing data packets, the PICs encapsulate the packets received from the FPCs. Each PIC is equipped with an ASIC that performs control functions specific to the media type of that PIC.
PICs are hot-removable and hot-insertable. Up to two PICs can be installed in the slots in each FPC. Up to three FPCs can be installed in an MX480 router. PICs used in a Type 2 FPC have captive screws at their upper and lower corners. PICs used in a Type 3 FPC have an upper ejector handle and a lower captive screw.
MX480 PIC Port and Interface Numbering
Each port on a PIC corresponds to a unique interface name in the CLI.
In the syntax of an interface name, a hyphen (-) separates the media type from the FPC number (represented as an FPC in the CLI). The FPC slot number corresponds to the first number in the interface. The second number in the interface corresponds to the PIC number. The last number in the interface matches the port number on the PIC. Slashes (/) separate the FPC number from the PIC number and port number:
type—Media type, which identifies the network device. For example:
ge—Gigabit Ethernet interface
xe—10-Gigabit Ethernet interface
For a complete list of media types, see Interface Naming Overview.
fpc—Lowest slot number in which the FPC is installed. On the MX480 router, FPCs occupy two line card slots and are represented in the CLI as FPC 0 through FPC 4.
pic—PIC number, 0 or 1 depending on the FPC slot.
The MX480 supports up to three FPCs that install horizontally and are numbered from bottom to top.
Figure 3 shows
a Channelized OC12/STM4 Enhanced IQ (IQE) PIC with SFP installed in
0 of an FPC installed in slot
3 and slot
The show chassis hardware command output displays
a Channelized OC12/STM4 Enhanced IQ (IQE) PIC (
IQE SONET) installed in MX FPC Type 2.
user@host> show chassis hardware
... FPC 3 REV 01 710-024386 JW9571 MX FPC Type 2 CPU REV 03 710-022351 KE2986 DPC PMB PIC 0 REV 00 750-022630 DS1284 4x CHOC12 IQE SONET Xcvr 0 REV 01 740-011782 PB821SG SFP-SX Xcvr 1 REV 01 740-011782 PB829Q6 SFP-SX Xcvr 2 REV 01 740-011613 P9F15NQ SFP-SX Xcvr 3 REV 01 740-011782 P7N036X SFP-SX...
The show interfaces terse command output displays the channelized SONET OC12 interfaces (coc12), that correspond to the four ports located on the PIC.
user@host>show interfaces terse
... coc12-3/0/0 up up lc-3/0/0 up up lc-3/0/0.32769 up up vpls pfe-3/0/0 up up pfe-3/0/0.16383 up up inet inet6 pfh-3/0/0 up up pfh-3/0/0.16383 up up inet coc12-3/0/1 up up coc12-3/0/2 up up coc12-3/0/3 up up ...
MX480 PIC LEDs
Each PIC has LEDs located on the faceplate. For more information about LEDs on the PIC faceplate, see the “LEDs” section for each PIC in the MX Series Interface Module Reference.
PICs Supported by MX240, MX480, and MX960 Routers
Table 2 lists the PICs supported by MX240, MX480, and MX960 routers.
Table 2: PICs Supported by MX240, MX480, and MX960 Routers
PIC Model Number
First Junos OS Release
|Channelized IQ PICs|