Juniper EX Series Complete Hardware Guide

Figure 66: Removing a Fan Tray from an EX 4200 Switch
NOTE: When a fan tray is removed, Fan/Blower is Absent is logged in the system
log and the system raises a minor alarm.
Related Topics ■ Installing a Fan Tray in an EX-series Switch on page 110
■ Installing and Removing EX-series Switch Hardware Components on page 100
■ Cooling System in an EX 3200 Switch on page 30
■ Cooling System in an EX 4200 Switch on page 32
■ Field-Replaceable Units in EX-series Switches on page 99
■ EX 3200 Switch—Rear-Panel Description on page 10
■ EX 4200 Switch—Rear-Panel Description on page 12
Disconnecting a Virtual Chassis Cable from an EX-series Switch
If you need to disconnect an EX 4200 switch from a virtual chassis configuration,
you need to disconnect the virtual chassis cable from the virtual chassis ports.
Ensure you have the following tools and parts available to disconnect a virtual chassis
cable from an EX-series switch:
■ Electrostatic discharge (ESD) grounding strap
■ Cross-head screwdriver
Ensure you understand how to prevent ESD damage (see “Preventing Electrostatic
Discharge Damage” on page 138).
To disconnect a virtual chassis cable from an EX 4200 switch (see
Figure 67 on page 114):
1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.
2. Loosen the screws on the locking cover by using the cross-head screwdriver.
Disconnecting a Virtual Chassis Cable from an EX-series Switch ■ 113
Chapter 5: Replacing Hardware Components

Juniper EX Series Specifications

General

Series	EX Series
Category	Switch
Layer	Layer 2/3
Operating System	Junos OS
Managed	Yes
ACLs	Yes
Port Density	Varies by model
Power over Ethernet (PoE)	Available on some models
Virtual Chassis	Supported on some models
Form Factor	Fixed configuration, Modular
Switching Capacity	Varies by model
Forwarding Rate	Varies by model
Power Supply	Varies by model (AC or DC, redundant options available)
Management	CLI, Web UI, SNMP
Redundancy	Power supply, fan, Virtual Chassis
Latency	Varies by model
Jumbo Frames	Supported
VLAN Support	Yes
MAC Address Table Size	Varies by model
QoS	Yes
Energy Efficiency	EEE (802.3az)
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	0° to 45° C
Storage Temperature	-40° to 70° C
Humidity	5% to 90% non-condensing
MTBF	Varies by model
Warranty	Limited Lifetime