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1. Network Module Leds

Installing Network Modules

Note

The switch can operate without a network module, but a blank module (with no ports or SFP slots) is

available and should be installed when uplink ports are not required.

The switch generates logs when you insert or remove a network module with SFP slots.

Note

Use only supported network modules and SFP or SFP+ modules. Each module has an internal serial EEPROM

that is encoded with security information. For information about supported SFP modules, see

Modules.

The network module is hot-swappable. If you remove a module, replace it with another network module or

a blank module.

The switch complies with EMC, safety, and thermal specifications when a network module is present. If

Note

no uplink ports are required, install a blank network module.

Before You Begin

When installing network modules, observe these precautions:

• Do not remove the blank module from the slot unless you are installing an SFP or SFP+ module. Either

• Do not remove the dust plugs from the fiber-optic SFP modules or the rubber caps from the fiber-optic

• Removing and installing a network module can shorten its useful life. Do not remove and insert a network

• To prevent ESD damage, follow your normal board and component handling procedures when connecting

Procedure

Step 1

Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

Step 2

Remove the module from the protective packaging.

Step 3

Remove the blank module from the switch and save it.

Caution

Catalyst 3850 Switch Hardware Installation Guide

a module or a dust plug must be in the slot at all times.

cable until you connect the cable. The plugs and caps protect the module ports and cables from

contamination and ambient light.

module more often than is necessary.

cables to the switch and other devices.

Verify the correct orientation of your module before installing it. Incorrect installation can damage

the module.

Do not install the network module with connected cables or installed SFP modules. Always remove

any cables and modules before you install the network module.

A module interface might become error-disabled when a network module with connected fiber-optic

cables is installed or removed. If an interface is error-disabled, you can reenable the interface by

using the shutdown and no shutdown interface configuration commands.

Installing a Network Module

SFP and SFP+

OL-26779-05