Network Router User Manual

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)
M10i Internet Router Hardware Guide