Juniper Networks M10i manual Flexible PIC Concentrators FPCs, Physical Interface Cards PICs

M10i Internet Router Hardware Guide

Figure 3: Midplane

Flexible PIC Concentrators (FPCs)

Flexible PIC Concentrators (FPCs) house the PICs that connect the router to network media (for information about PICs, see “Physical Interface Cards (PICs)” on page 10). On the M10i router, each FPC is built in (it cannot be removed from the chassis as on other M-series platforms) and corresponds to a horizontal row of PIC slots. The two FPCs on the M10i router are numbered 0 and 1, top to bottom. Each FPC accommodates up to four PICs.

Physical Interface Cards (PICs)

Physical Interface Cards (PICs) physically connect the router to network media. They are housed in Flexible PIC Concentrators (FPCs); for more information about FPCs, see “Flexible PIC Concentrators (FPCs)” on page 10.

PICs receive incoming packets from the network and transmit outgoing packets to the network, performing framing and line-speed signaling for their media type as required. PICs also encapsulate outgoing packets received from the FPCs before transmitting them. The controller ASIC on each PIC performs additional control functions specific to the PIC media type.

The router supports various PICs, including ATM, Channelized, Gigabit Ethernet, IP Services, and SONET/SDH interfaces. For complete PIC specifications, see the M10i Internet Router PIC Guide.

Some PICs, such as selected Gigabit Ethernet PICs, accept small form-factor pluggables (SFPs), which are fiber-optic transceivers that can be removed from the PIC. Various SFPs have different reach characteristics. You can mix them in a single PIC and change the combination dynamically. SFPs are hot-removable and hot-insertable, as described in “Field-Replaceable Units (FRUs)” on page 3. For SFP replacement instructions, see “Replacing an SFP” on page 104. For information about PICs that use SFPs, see the M10i Internet Router PIC Guide.

Up to eight PICs install into an M10i router, as shown in Figure 1. The PIC slots on the upper FPC are numbered from 0/0 (zero/zero) through 0/3, right to left. The PIC slots in the lower FPC are numbered from 1/0 (one/zero) through 1/3, right to left.

10■ Flexible PIC Concentrators (FPCs)