Juniper QFabric QFX3000-G Hardware Documentation page 254

QFX3000-G QFabric System Hardware Documentation
Planning a QFX3000-G QFabric System Deployment
204
A QFX3000-G QFabric system is formed by interconnecting QFX3500, QFX3600, or
QFX5100 Node devices, QFX3008-I Interconnect devices, and QFX3100 Director devices.
Two Virtual Chassis, composed of four EX4200 or four EX4300 switches each, are used
to interconnect the control plane and management network.
NOTE: The EX4200 and EX4300 Virtual Chassis may not be intermixed in
the same QFabric system.
Before installing a QFabric system, you must consider the following factors:
The number of devices in the QFabric system and their location.
You must have two QFX3100 Director devices operating in a Director group.
You can have up to four QFX3008-I Interconnect devices.
You can interconnect up to 128 QFX Series Switches as Node devices. Supported
models are:
QFX5100-24Q
QFX5100-48S
QFX5100-48T
QFX3600
QFX3500
The number of Node devices you require depends on the following factors:
The number of access ports you need for connections to either endpoint systems
(such as servers and storage devices) or external networks.
The oversubscription ratio you need on the access ports.
The number of access ports supported on each Node device based on that
oversubscription ratio.
The number of connections from a Node device to an interconnect device.
Table 60 on page 205 shows the number of 10-Gigabit Ethernet access ports supported
on Node devices based on the oversubscription ratio you need on the access ports.
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