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Chapter 1: Overview
SIBs
Five SIBs provide the necessary switching functionality to a base configuration QFX10008.
A sixth SIB is available in the redundant configuration to provide N+1 redundancy. SIBs
are installed between the line cards and the fan trays inside of the chassis (see
Figure 6 on page
29). Each QFX10008 SIB has eight connectors that match to a line card
slot eliminating the need for a backplane. When all six SIBs are installed, the QFX10008
has a net switching capacity of 42 Terabytes. See QFX10008 Switch Interface Board.
Figure 6: QFX10008 SIB
Cooling System
The cooling system in a QFX10008 consists of two hot-removable and hot-insertable
FRU fan trays (see
Figure 7 on page
30) and two fan tray controllers (see
Figure 8 on page
30). Each fan tray contains 11 fans. The fan trays install vertically on the
rear of the chassis and provides front to back chassis cooling. See
"QFX10008 Cooling
System" on page
42.
Copyright © 2019, Juniper Networks, Inc.
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