Connecting a QFX3500 Node Device to a Fiber-Based QFX3000-G QFabric System Control Plane Network

A QFX3000-G QFabric system control plane and management network is formed by connecting the QFX Series devices in your network to two Virtual Chassis composed of EX Series switches. If you are creating a fiber-based control plane network, you use eight EX4200-24F or four EX4300-48P Ethernet switches in each Virtual Chassis. QFX3500 Node devices have an RJ-45 or SFP management board. Use the SFP management ports (labeled C0 and C1) to connect the QFX3500 Node device to each Virtual Chassis (see Figure 1).

QFX3500
Node Device Fiber-Based Control Plane Connections for QFX3000-G QFabric
System

Use the following QFX3500 Node devices and EX Series switches for a fiber-based QFX3000-G QFabric system control plane network:

QFX3500 Node devices with an SFP management board installed. The SFP management board provides two small form-factor pluggable (SFP) 1-Gbps management ports labeled C0 and C1.
Virtual Chassis EX4200-24F or EX4300-48P switch members with an SFP+ uplink module installed.

Before you begin to connect a QFX3500 Node device to the fiber-based QFX3000-M QFabric system control plane network:

Install your QFabric system hardware (Director group, Interconnect devices, and Node devices). For more information, see Installing and Connecting a QFX3100 Director Device, Installing and Connecting a QFX3008-I Interconnect Device, Installing and Connecting a QFX3600 or QFX3600-I Device, and Installing and Connecting a QFX3500 Device.
Create two Virtual Chassis of eight EX4200-24F switch members or four EX4300-48P switch members.
- See Cabling EX4200 or EX4300 Series Switches Virtual Chassis for a QFX3000-G QFabric System Control Plane.
- See Configuring an EX4200, EX4500, or EX4550 Virtual Chassis (CLI Procedure) or Configuring an EX2300, EX3400, or EX4300 Virtual Chassis.
Interconnect the two Virtual Chassis switches using the 10-Gigabit Ethernet SFP+ uplink ports. See Interconnecting Two Virtual Chassis for Copper-Based QFX3000-G QFabric System Control Plane Redundancy.
Ensure that you have installed 1-Gigabit Ethernet SFP transceivers in management ports C0 and C1 on each QFX3500 Node device (see Installing a Transceiver in a QFX Series Device). For a list of supported transceivers and required cables, see The Hardware Compatibility Tool.
Ensure that you have installed 1-Gigabit Ethernet SFP transceivers in the ports you are using on each EX Series switch (see Installing a Transceiver). For a list of supported transceivers, see The Hardware Compatibility Tool.
Ensure that you have appropriate fiber-optic cables.
Ensure that you have taken the necessary precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings for the QFX Series).

Use Table 1 and Table 2 to determine the QFX3500 Node device-to-Virtual Chassis port mappings. Specific ports have been reserved on the Virtual Chassis to connect to each of the QFX Series 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 (see Example: Configuring a Fiber-Based Control Plane for the QFX3000-G QFabric System).

Note

The numerical identifiers for each Node device below are not preassigned to the Node devices that are shipped to you. They represent the order in which you connect the Node devices. For example, the first Node device (Node 0) is connected to port ge-0/0/0 on each Virtual Chassis.

Table 1: QFX3500 Node Device-to-Virtual Chassis Fiber-Based Control Plane Port Assignments

Member 0	Member 1	Member 2	Member 3	Member 4	Member 5	Member 6	Member 7
Node: 0 `ge-0/0/0`	Node: 16 `ge-1/0/0`	Node: 32 `ge-2/0/0`	Node: 48 `ge-3/0/0`	Node: 64 `ge-4/0/0`	Node: 80 `ge-5/0/0`	Node: 96 `ge-6/0/0`	Node: 112 `ge-7/0/0`
Node: 1 `ge-0/0/1`	Node: 17 `ge-1/0/1`	Node: 33 `ge-2/0/1`	Node: 49 `ge-3/0/1`	Node: 65 `ge-4/0/1`	Node: 81 `ge-5/0/1`	Node: 97 `ge-6/0/1`	Node: 113 `ge-7/0/1`
...	...	...	...	...	...	...	...
Node: 14 `ge-0/0/14`	Node: 30 `ge-1/0/14`	Node: 46 `ge-2/0/14`	Node: 62 `ge-3/0/14`	Node: 78 `ge-4/0/14`	Node: 94 `ge-5/0/14`	Node: 110 `ge-6/0/14`	Node: 126 `ge-7/0/14`
Node: 15 `ge-0/0/15`	Node: 31 `ge-1/0/15`	Node: 47 `ge-2/0/15`	Node: 63 `ge-3/0/15`	Node: 79 `ge-4/0/15`	Node: 95 `ge-5/0/15`	Node: 111 `ge-6/0/15`	Node: 127 `ge-7/0/15`

Member 0

Member 1

Member 2

Member 3

Member 4

Member 5

Member 6

Member 7

Node: 0

ge-0/0/0

Node: 16

ge-1/0/0

Node: 32

ge-2/0/0

Node: 48

ge-3/0/0

Node: 64

ge-4/0/0

Node: 80

ge-5/0/0

Node: 96

ge-6/0/0

Node: 112

ge-7/0/0

Node: 1

ge-0/0/1

Node: 17

ge-1/0/1

Node: 33

ge-2/0/1

Node: 49

ge-3/0/1

Node: 65

ge-4/0/1

Node: 81

ge-5/0/1

Node: 97

ge-6/0/1

Node: 113

ge-7/0/1

...

Node: 14

ge-0/0/14

Node: 30

ge-1/0/14

Node: 46

ge-2/0/14

Node: 62

ge-3/0/14

Node: 78

ge-4/0/14

Node: 94

ge-5/0/14

Node: 110

ge-6/0/14

Node: 126

ge-7/0/14

Node: 15

ge-0/0/15

Node: 31

ge-1/0/15

Node: 47

ge-2/0/15

Node: 63

ge-3/0/15

Node: 79

ge-4/0/15

Node: 95

ge-5/0/15

Node: 111

ge-6/0/15

Node: 127

ge-7/0/15

Table 2: QFX3500 Node Device-to-EX4300 Virtual Chassis Copper-Based Control Plane Port Assignments

Member 0	Member 1	Member 2	Member 3
Node 0: ge-0/0/0	Node 32: ge-1/0/0	Node 64: ge-2/0/0	Node 96: ge-3/0/0
Node 1: ge-0/0/1	Node 33: ge-1/0/1	Node 65: ge-2/0/1	Node 97: ge-3/0/1
...	...	...	...
Node 30: ge-0/0/30	Node 62: ge-1/0/30	Node 94: ge-2/0/30	Node 126: ge-3/0/30
Node 31: ge-0/0/31	Node 63: ge-1/0/31	Node 95: ge-2/0/31	Node 127: ge-3/0/31

To connect a QFX3500 Node device to the fiber-based QFX3000-G QFabric system control plane network (see Figure 1):

Warning

Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to transceivers emit laser light that can damage your eyes.

If the fiber-optic cable connector is covered by a rubber safety cap, remove the cap. Save the cap.
Remove the rubber safety cap from the SFP optical transceiver in the first management port (labeled C0) on the Node device management board. Save the cap.
Insert the cable connector into the optical transceiver.
Connect the other end of that cable to the appropriate port on the first Virtual Chassis. See Table 1.
Remove the rubber safety cap from the SFP optical transceiver in the second management port (labeled C1) on the Node device management board. Save the cap.
Insert the cable connector into the optical transceiver.
Connect the other end of that cable to the appropriate port on the second Virtual Chassis. This should be the same port number that you connected to in Step 4. For example, if you connected the first cable to ge-0/0/0 on the first Virtual Chassis, you connect the second cable to ge-0/0/0 on the second Virtual Chassis.
Repeat this procedure for each QFX3500 Node device.
Secure the cables so that they are not supporting their own weight. Place excess cable out of the way in a neatly coiled loop. Placing fasteners on a loop helps cables maintain their shape.Caution
Do not bend fiber-optic cables beyond their minimum bend radius. An arc smaller than a few inches in diameter can damage the cables and cause problems that are difficult to diagnose.
Do not let fiber-optic cables hang free from the connector. Do not allow fastened loops of cables to dangle, which stresses the cables at the fastening point.

Connecting a QFX3500 Node Device to a Fiber-Based QFX3000-G QFabric System Control Plane Network

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