Qfx10000 Component Redundancy - Juniper QFX10008 Hardware Manual

QFX10008 Switch Hardware Guide
Table 4: CLI Equivalents of Terms Used in Documentation for QFX10000 Switches (continued)
Hardware
Item (CLI) Description (CLI)
SIB (n) This field indicates:
State of the fabric
plane:
Active
Spare
Check State
Status of the
Packet
Forwarding
Engine in each
fabric plane:
Links OK
Error
PIC (n) –

QFX10000 Component Redundancy

34
Value (CLI)
n is a value in the range of
0–5.
Value of n is always 0.
The QFX10000 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 QFX10000 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 "QFX10000 Routing and Control Board Description" on page
Switch Interface Boards (SIBs)—The QFX10000 has 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
Description" on page 63
Power supplies—The QFX10000 requires three power supplies for minimum operation
(two RCBs, two fan trays, six SIBs and no line cards). With additional power supplies,
it provides N+1 redundancy for the system. Both AC and DC systems tolerate a single
power supply to fail without system interruption. If one power supply fails in a fully
redundant system, the other power supply can provide full power to the QFX10000
indefinitely.
Item In
D o c u m e n t a t i o n Additional Information
Fabric show chassis fabric sibs
plane
– Understanding Interface Naming
Conventions
"QFX10008 Switch Interface Board
and QFX10016 Switch Interface Board Description.
Copyright © 2019, Juniper Networks, Inc.
67.