Juniper QFX3000-G QFabric, Deployment Manual, Page: 310 / 652

•
Eight QFX3500 Node devices
•
Eight EX4200-48T switches, used to make two redundant Virtual Chassis with four
members apiece
• Junos OS Release 12.1R1.10 for the EX Series switches used in the Virtual Chassis
•
Junos OS Release 12.2 for the QFX Series
Before you begin:
•
Rack, mount, and install your QFabric system hardware (Director group, Interconnect
devices, and Node devices). For more information, see
“Installing and Connecting a
QFX3100 Director Device” on page 143 , “Installing and Connecting a QFX3008-I
Interconnect Device” on page 155 , and “Installing and Connecting a QFX3500 Device”
on page 211 .
•
Rack, mount, and install your Virtual Chassis hardware (EX4200 switches). For more
information, see
Installing and Connecting an EX4200 Switch .
• Create two Virtual Chassis of four members each. For more information, see Configuring
an EX4200, EX4500, or EX4550 Virtual Chassis (CLI Procedure) .
Overview
The QFX3000-G QFabric system control plane network connects the Director group,
Interconnect devices, and Node devices in a QFabric system across a pair of redundant
Virtual Chassis. By separating the management control plane from the data plane, the
QFabric system can scale efficiently. The control plane network uses Gigabit Ethernet
cabling and connections between components, and a 10-Gigabit Ethernet backbone
between the redundant Virtual Chassis.
Specific ports have been reserved on the Virtual Chassis to connect to each of the QFabric
system device types. Such design simplifies installation and facilitates timely deployment
of a QFabric system. It also permits the use of a standard Virtual Chassis configuration
included as part of this example. The standard configuration can scale from the minimum
topology of eight Node devices shown in this example to the maximum of 128 Node
devices for a fully implemented QFX3000-G QFabric system.
Topology
Figure 77 on page 285 shows the general port ranges where QFabric system devices must
be connected to the Virtual Chassis. For each Virtual Chassis member, connect ports 0
through 31 to Node devices, ports 38 and 39 to Interconnect devices, and ports 40 and
41 to Director devices.
Table 77 on page 285 shows the details of the QFabric system
device-to-Virtual Chassis port mappings.
Copyright © 2015, Juniper Networks, Inc. 284
QFX3000-G QFabric System Deployment Guide