Juniper QFX3000-G QFabric, Deployment Manual, Page: 63 / 652

each Node device to the control plane switches. Connect each interface to a different
control plane switch to provide system resiliency.
For the most current guidance on the QFabric control plane configuration and cabling
recommendations, see:
•
Example: Configuring the Virtual Chassis for the QFX3000-G QFabric System Control
Plane on page 283
• Example: Configuring EX4200 Switches for the Copper-Based QFX3000-M QFabric
System Control Plane
•
Connections between the management interfaces of the Interconnect devices and
the control plane switches
—Enable control plane connectivity from the Interconnect
devices to the rest of the QFabric system. You must connect the interfaces in each
Interconnect device to the control plane switches. Connect each interface to a different
control plane switch to provide system resiliency.
For example, on QFX3008-I Interconnect devices, there are two Control Boards and
two interfaces per Control Board, for a total of four connections per Interconnect device.
To provide system resiliency, connect one interface from each Control Board to the
first Virtual Chassis, and connect the second interface from each Control Board to the
second Virtual Chassis.
For the most current guidance on the QFabric control plane configuration and cabling
recommendations, see:
•
Example: Configuring the Virtual Chassis for the QFX3000-G QFabric System Control
Plane on page 283
• Example: Configuring EX4200 Switches for the Copper-Based QFX3000-M QFabric
System Control Plane
• Connections between the network module interfaces of the Director group and the
control plane switches
—Enable control plane connectivity from the Director group to
the rest of the QFabric system. You must connect some interfaces from the first network
module in a Director device to one control plane switch, and connect some interfaces
from the second network module in a Director device to the second control plane
switch. Also, you must connect the ports from the first network module to the primary
control plane switch for each Director device (which may vary depending on the
configuration of your Director group).
For the most current guidance on the QFabric control plane configuration and cabling
recommendations, see:
•
Example: Configuring the Virtual Chassis for the QFX3000-G QFabric System Control
Plane on page 283
• Example: Configuring EX4200 Switches for the Copper-Based QFX3000-M QFabric
System Control Plane
•
Routing Engines —Although they are automatically provisioned, specialized Routing
Engines implement services such as default QFabric system infrastructure, device
37 Copyright © 2015, Juniper Networks, Inc.
Chapter 3: Software Architecture Overview