Juniper PTX10008 - PTX10000 Hardware and CLI Terminology Mapping; PTX10008 Component Redundancy; Routing and Control Board

PTX10008 Component Redundancy
The PTX10008 router is designed so that no single point of failure can cause the entire system to fail. The
following major hardware components in the redundant configuration provide redundancy:
•
Routing and Control Board (RCB)—The RCB consolidates the Routing Engine function with control plane
function in a single unit. The PTX10008 router can have one or two RCBs. When two RCBs are installed,
one functions as the master and the other functions as the backup. If the master RCB (or either of its
components) fails, the backup can take over as the master. See “PTX10000 Routing and Control Board
Description” on page 78.
•
Switch Interface Boards (SIBs)—The PTX10008 routers have six SIB slots. Five SIBs are required for base
operation and the sixth SIB provides n+1 redundancy. All six SIBs are active and can sustain full throughput
rate. The fabric plane can tolerate one SIB failure without any loss of performance. See the “PTX10008
Switch Interface Board Description” on page 86.
•
Power supplies—The PTX10000 routers require three power supplies for minimum operation (two RCBs,
two fan trays, six SIBs and no line cards). Additional power supplies, provide n+1 redundancy for the
system. AC, DC, HVAC, and HVDC systems tolerate a single power supply to fail without system
interruption. If one power supply fails in a fully redundant system, the other power supplies can provide
full power to the PTX10000 router indefinitely.
The PTX10000 router also supports source redundancy. Two sets of lugs are provided for the
JNP10K-PWR-AC cables, four sets of lugs are provided for the JNP10K-PWR-DC2 cables, and two AC
power cords are provided for each JNP10K-PWR-AC2 power supply.
•
Cooling system—The fan trays have redundant fans, which are controlled by the fan tray controller. If
one of the fans fails, the host subsystem increases the speed of the remaining fans to provide sufficient
cooling for the router indefinitely. See “PTX10008 Cooling System and Airflow” on page 46.
SEE ALSO
PTX10008 Components and Configurations | 35
PTX10000 Hardware and CLI Terminology Mapping
This topic describes the hardware terms used in PTX10000 router documentation and the corresponding
terms used in the Junos OS CLI. See Table 5 on page 38.
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