Figure 49: Standard Sib Or Standard Sib Version B; Figure 50: T640-Sib - Juniper T640 Hardware Manual

T640 Core Router Hardware Guide
112
Table 63: Links to the SIBs From the FPCs (continued)
FPC Type Links to SIBs
Type 2 FPC Each FPC has one dedicated ASIC with five high-speed links that
connect to the SIBs (one link per SIB)
Type 3 FPC Each FPC has two dedicated ASICs, and each ASIC has five high-speed
links that connect to the SIBs (a total of 10 links).
Type 4 FPC Each FPC has one dedicated ASIC with ten high-speed links that
connect to the SIBs (two links per SIB).
The T640 router supports these types of SIBs:
Standard SIB.
Standard SIB version B (supported in Junos OS Release 7.3 and later)—Required to
support the Enhanced Scaling FPCs in a standalone T640 router. If you use one or
more Enhanced Scaling FPCs in a T640 router that is not part of a routing matrix, each
SIB in the router must be a SIB version B. All the SIBs in the T640 router can be either
standard SIB or SIB version B. You cannot use both on the same router at the same
time.

Figure 49: Standard SIB or Standard SIB Version B

The T640-SIB (supported in Junos OS Release 7.0 and later) is required to support
T640 routers connected to a TX Matrix platform; see
T640-SIB supports the Enhanced Scaling FPC4 for T640 routers connected to a TX
Matrix platform.

Figure 50: T640-SIB

Figure 50 on page 112. The
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