SFBs are hot-removable and hot-insertable field-replaceable units (FRUs). They are not visible from the
outside of the router chassis. You must remove one of the fan trays in order to view the SFBs. The SFBs
are numbered from left to right SFB0 to SFB5. See
Figure 31: SFBs Installed in an MX10004 Router
1
—
Fan tray controllers
2
—
Switch Fabric Boards
MX10K-LC2101 Line Card
The MX10K-LC2101 line card is a fixed configuration MPC. It does not contain separate slots for
Modular Interface Cards (MICs). The MX10004 routers support four and the MX10008 routers support
eight MX10K-LC2101 MPCs. The line card provides a maximum bandwidth of 2.4Tbps and has six
Packet Forwarding Engines, each providing a maximum bandwidth of up to 400 Gbps. The line card
plugs in to the MX10004, MX10008, and MX10016 routers horizontally at the front of the chassis.
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