MX10008 Switch Fabric Board

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.

MX10008 Switch Fabric Board Description

The SFBs make up the MX10008 switching plane. There are two models of SFBs: the JNP10008-SF and the JNP10008-SF2. Five SFBs are required for operation with the sixth providing N+1 redundancy. SFBs must all be of the same model type in a running chassis. On both models, the SFB has eight connectors on the connecter edge which match and connect to a connector on one of the eight line cards. See Figure 1

Figure 1: Switch Fabric Board

Note:

The fabric connectors on the JNP10008-SF2 SFB are sensitive to debris accumulation. The connectors interface with the connectors on the MX10K-LC9600 line card. The connectors must be kept clean and free of dust and other particles, to ensure high-quality connection between JNP10008-SF2 SFB and MX10K-LC9600 line card.

Note:

Hyper-mode is the default forwarding mode on the JNP10004-SF2 SFB.

Table 1 shows the specifications of JNP10008-SF and JNP10008-SF2 SFBs supported on MX10008 chassis.

Table 1: SFB Specifications
Specification	JNP10008-SF	JNP10008-SF2
Operating system	Junos OS Release 17.2R1 and later	Junos OS Release 21.4R1 and later
Supported line cards	MX10K-LC2101 MX10K-LC480	MX10K-LC2101 MX10K-LC480 MX10K-LC9600
Number of SIBs required for operation	Base systems require 5 SIBs; redundant systems require 6 SIBs	The number of SIBs required for full bandwidth operation depends on the type of line cards installed, as described below: With the MX10K-LC2101 line cards, an MX10008 chassis requires 6 SIBs. This configuration provides an N+1 redundancy. With the MX10K-LC480 line cards, an MX10008 chassis requires 5 SIBs to operate (with N+1 redundancy). If you use 6 SIBs alongside the MX10K-LC480 line cards, the system provides an N+2 redundancy. With the MX10K-LC9600 line cards, an MX10008 chassis requires 6 SIBs. This configuration doesn’t provide any redundancy.
Switching Capacity	When all six SFBs are installed, the MX10008 has a net switching capacity of 42 Tbps.	When all six SFBs are installed, the MX10008 has a net switching capacity of 76 Tbps.
Height	19.7 in. (50.04 cm)	19.7 in. (50.04 cm)
Width	1.8 in. (4.57 cm)	1.8 in. (4.57 cm)
Depth	10.4 in. (26.42 cm)	10.4 in. (26.42 cm)
Weight	14.8 lb (6.71 kg)	16 lb (7.25 kg)

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 2.

Figure 2: SFBs Installed in an MX10008 Router

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Fan tray controllers

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Switch Fabric Boards

The fabric interface connectors on the JNP10008-SF2 SFB have preinstalled protective plastic covers which will keep the connectors clean and free of dust and other particles. Remove the protective plastic covers before you install the JNP10008-SF2 SFB into the router. Save the plastic covers for future use to re-install when you remove the JNP10008-SF2 SFB from the router.