Juniper EX4600 Hardware Guide

Installing an Expansion Module in an EX4600 Switch
Before you begin installing an expansion module in the switch, ensure that you have taken the necessary
precauons to prevent electrostac discharge (ESD) damage (see Prevenon of Electrostac Discharge
Damage ).
Ensure that you have the following parts and tools available:
• ESD grounding strap. If a grounding strap is not available, follow the alternave grounding method
described in Step 1 of the following procedure.
• Phillips (+) screwdriver, number 2
The EX4600 switch allows up to two expansion modules to be added to the port panel to increase port
density. The EX4600 switch holds two bays of expansion modules that can be mixed and matched as
desired. The supported modules are:
• QFX-EM-4Q–Each module adds four Quad Enhanced Small Form-Factor Pluggable (QSFP+) ports
• EX4600-EM-8F–Each module adds eight 10 Gigabit RJ-45 ports
The EX4600 is congured for the QFX-EM-4Q by default, but any combinaon of the two modules is
supported. Expansion modules can be hot-inserted or hot-removed. However, when an EX4600-EM-8F
is inserted instead of the default QFX-EM-4Q, the PFE reboots and all of the interfaces on the switch
and expansion module temporarily go down. Likewise when an EX4600-EM-8F is running on the
EX4600 and it is swapped with a QFX-EM-4Q, all of the interfaces temporarily go down, which can
cause a short disrupon in trac.
NOTE: When an expansion module is installed in the switch or an exisng expansion module is
replaced with another expansion module, the switch detects the ports on the expansion module.
The switch creates the required interfaces when transceivers are installed in these ports.
To install an expansion module in an EX4600 switch (see Figure 43 on page 105):
1. Aach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
If a grounding strap is not available, hold the expansion module in its anstac bag in one hand and
touch the exposed metallic part of the switch with the other hand to ground yourself and the
component.
2. If the module slot has a cover panel on it, remove the cover panel by using the screwdriver and save
it for later use.
3. Taking care not to touch module components, pins, leads, or solder connecons, remove the
expansion module from its bag.
104

Juniper EX4600 Specifications

General

Rack Units	1U
Junos OS	Yes
Product Series	EX Series
DRAM	8 GB
Flash Memory	16 GB
Ports	4 x 40GbE QSFP+ ports
Power Supply	Dual, hot-swappable
MAC Address Table Size	288, 000
Jumbo Frames	9216 bytes
Input Voltage	100-240 V AC
Operating Temperature	0°C to 40°C
Memory	8 GB
Storage	16 GB