Juniper EX4200 User Manual

To disconnect a fiber-optic cable from an optical transceiver installed in the switch:
1. Disable the port in which the transceiver is installed by issuing the following command:
[edit interfaces]
user@switch# set interface-name disable
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.
2. Carefully unplug the fiber-optic cable connector from the transceiver.
3. Cover the transceiver with a rubber safety cap.
WARNING: Do not leave a fiber-optic transceiver uncovered except when
inserting or removing a cable. The rubber safety cap keeps the port clean
and prevents accidental exposure to laser light.
4. Cover the fiber-optic cable connector with the rubber safety cap.
Related
Documentation
Connecting a Fiber-Optic Cable to a Switch on page 189•
• Removing a Transceiver from a Switch on page 223
• Maintaining Fiber-Optic Cables in Switches on page 229
• Pluggable Transceivers Supported on EX Series Switches
• Pluggable Transceivers Supported on OCX1100 Switches
Maintaining Fiber-Optic Cables in Switches
Fiber-optic cables connect to optical transceivers that are installed in EX Series switches
and OCX1100 switches.
To maintain fiber-optic cables:
•
When you unplug a fiber-optic cable from a transceiver, place rubber safety caps over
the transceiver and on the end of the cable.
•
Anchor fiber-optic cables to prevent stress on the connectors. When attaching a
fiber-optic cable to a transceiver, be sure to secure the fiber-optic cable so that it is
not supporting its own weight as it hangs to the floor. Never let a fiber-optic cable hang
free from the connector.
•
Avoid bending fiber-optic cables beyond their minimum bend radius. Bending fiber-optic
cables into arcs smaller than a few inches in diameter can damage the cables and
cause problems that are difficult to diagnose.
•
Frequent plugging and unplugging of fiber-optic cables in and out of optical instruments
can damage the instruments, which are expensive to repair. Attach a short fiber
229Copyright © 2015, Juniper Networks, Inc.
Chapter 20: Maintaining and Replacing Fiber-Optic Cable

Juniper EX4200 Specifications

General

Model	EX4200
Switching Capacity	128 Gbps
Layer	Layer 2 and Layer 3
Form Factor	1U
Throughput	96 Mpps
Maximum VLANs	4096
MAC Address Table Size	16, 000
DRAM	1 GB
Flash Memory	1 GB
Forwarding Rate	96 Mpps
JUNOS Software	Yes
Ports	24 or 48
Stacking	Up to 10 switches in a Virtual Chassis configuration
Power Supply	AC or DC
Management	CLI, SNMP, J-Web
Input Voltage	100-240 VAC or -48 VDC
Operating Temperature	0°C to 45°C
Redundancy	Redundant power supplies
Virtual Chassis Technology	Yes
Storage Temperature	-40°C to 70°C
Humidity	5% to 90% non-condensing