Switch Fabric Boards (SFBs) create the switch fabric for the MX10008. Each MX10008 contains six SFBs
that are installed vertically, mid-chassis, between the line cards and the RCBs in the front and the fan trays
in the rear. When all six SFBs are installed, the MX10008 has a net switching capacity of 42 terabytes.
MX10008 Switch Fabric Board Description
The SFBs make up the switching plane. Five SFBs are required for operation with the sixth providing N+1
redundancy. Each SFB has eight connectors that match and connect to a connector on one of the eight
line cards. See Figure 41 on page 84.
Figure 41: Switch Fabric Board
Table 25 on page 84 shows the physical specifications for an MX10008 SFB.
Table 25: Dimensions of an MX10008 SFB
ValueSpecification
19.7 in. (50.04 cm)Height
1.8 in. (4.57 cm)Width
84