Cisco Systems Ws-C3850-24t-S, C3850NM210G, C3850NM41G User Manual

Catalyst 3850 Switch Hardware Installation Guide

September 2013

Cisco Systems, Inc.

www.cisco.com

Cisco has more than 200 offices worldwide. Addresses, phone numbers, and fax numbers are listed on the Cisco website at www.cisco.com/go/offices.

Text Part Number: OL-26779-02

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Catalyst 3850 Switch Hardware Installation Guide

Preface ix

Purpose ix

Document Conventions ix

Preface

This guide describes the hardware features of the Catalyst 3850 switches. It describes the physical and performance characteristics of each switch, explains how to install a switch, and provides troubleshooting information.

This guide does not describe system messages that you might receive or how to configure your switch. See the switch software configuration guide, the switch command reference, and the switch system message guide on

http://www.cisco.com/go/cat3850_docs

Document Conventions

This document uses the following conventions.

Note Means reader take note. Notes contain helpful suggestions or references to materials not contained in

this manual.

Caution Means reader be careful. In this situation, you might do something that could result in equipment

damage or loss of data.

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Catalyst 3850 Switch Hardware Installation Guide

Preface

Warning

IMPORTANT SAFETY INSTRUCTIONS

This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device.

SAVE THESE INSTRUCTIONS

The safety warnings for this product are translated into several languages in the Regulatory Compliance and Safety Information for the Catalyst 3850 Switch that is available on Cisco.com. The EMC regulatory

statements are also included in that guide.

Statement 1071

Product Overview

The Catalyst 3850 series switches are Ethernet switches to which you can connect devices such as Cisco IP Phones, Cisco Wireless Access Points, workstations, and other network devices such as servers, routers, and other switches.

The Catalyst 3850 switches support stacking through Cisco StackWise-480 technology and power management through StackPower. The StackWise technology for the Catalyst 3850 switches is called StackWise-480.

Unless otherwise noted, the term switch refers to a standalone switch and to a switch stack.

• Switch Models, page 1-2

• Front Panel, page 1-4

• Rear Panel, page 1-17

• Management Options, page 1-23

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Catalyst 3850 Switch Hardware Installation Guide

1-1

Switch Models

Table 1-1 Catalyst 3850 Switch Models

Switch Model Cisco IOS Image Description

Catalyst 3850-24T-L LAN Base Stackable 24 10/100/1000 Ethernet ports,

Catalyst 3850-48T-L LAN Base Stackable 48 10/100/1000 Ethernet ports,

Catalyst 3850-24P-L LAN Base Stackable 24 10/100/1000 PoE+

Catalyst 3850-48P-L LAN Base Stackable 48 10/100/1000 PoE+ ports,

Catalyst 3850-48F-L LAN Base Stackable 48 10/100/1000 PoE+ ports,

Catalyst 3850-24U-L LAN Base Stackable 24 10/100/1000 Cisco Universal Power

Catalyst 3850-48U-L LAN Base Stackable 48 10/100/1000 Cisco UPOE ports,

Catalyst 3850-24T-S IP Base Stackable 24 10/100/1000 Ethernet ports,

Catalyst 3850-48T-S IP Base Stackable 48 10/100/1000 Ethernet ports,

Catalyst 3850-24P-S IP Base Stackable 24 10/100/1000 PoE+ ports,

Catalyst 3850-48P-S IP Base Stackable 48 10/100/1000 PoE+ ports,

Catalyst 3850-48F-S IP Base Stackable 48 10/100/1000 PoE+ ports,

Catalyst 3850-24U-S IP Base Stackable 24 10/100/1000 Cisco UPOE ports,

Catalyst 3850-48U-S IP Base Stackable 48 10/100/1000 Cisco UPOE ports,

Catalyst 3850-24T-E IP Services Stackable 24 10/100/1000 Ethernet ports,

Catalyst 3850-48T-E IP Services Stackable 48 10/100/1000 Ethernet ports,

Catalyst 3850-24P-E IP Services Stackable 24 10/100/1000 PoE+ ports,

Catalyst 3850-48P-E IP Services Stackable 48 10/100/1000 PoE+ ports,

Catalyst 3850-48F-E IP Services Stackable 48 10/100/1000 PoE+ ports,

Chapter 1 Product Overview

1 network module slot

1 network module

1 network module slot

1 network module

Over Ethernet (Cisco UPOE) ports, 1 network module slot

1 network module slot

1 network module

1 network module slot, 715-W power supply

1 network module

1 network module slot, 1100-W power supply

1 network module slot

1 network module

1 network module slot

1 network module

, 350-W power supply

slot1, 350-W power supply

, 715-W power supply

slot, 715-W power supply

slot, 1100-W power supply

, 1100-W power supply

, 350-W power supply

slot1, 350-W power supply

slot, 715-W power supply

slot, 1100-W power supply

, 1100-W power supply

, 350-W power supply

slot1, 350-W power supply

, 715-W power supply

slot, 715-W power supply

slot, 1100-W power supply

ports,

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Chapter 1 Product Overview

Table 1-1 Catalyst 3850 Switch Models (continued)

Switch Model Cisco IOS Image Description

Catalyst 3850-24PW-S IP Base Catalyst 3850 24-port PoE IP Base with 5 access

Catalyst 3850-48PW-S IP Base Catalyst 3850 48-port PoE IP Base with 5 access

Catalyst 3850-24U-E IP Services Stackable 24 10/100/1000 Cisco UPOE ports,

Catalyst 3850-48U-E IP Services Stackable 48 10/100/1000 Cisco UPOE ports,

1. For supported network modules, see Table 1-2 on page 1-8.

2. PoE+ = Power over Ethernet plus (provides up to 30 W per port).

Switch Models

points license

point license

1 network module

1 network module slot

slot, 1100-W power supply

, 1100-W power supply

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Catalyst 3850 Switch Hardware Installation Guide

1-3

Front Panel

ACTV

Front Panel

Chapter 1 Product Overview

This section describes the front panel components:

• 24 or 48 downlink ports of one of these types:

–

10/100/1000

–

10/100/1000 PoE+

–

10/100/1000 Cisco UPOE ports

• Uplink network modules slot

• USB Type A connector

• USB mini-Type B (console) port

• LEDs

• Mode button

All of the switches have similar components. See Figure 1-1 and Figure 1-2 for examples.

Note The Catalyst 3850 switches might have slight cosmetic differences on the bezels.

Figure 1-1 Catalyst 3850-48P-L Switch Front Panel

Catalyst 3850 48 PoE+

01X

12X

13X

24X

25X

36X

37X

48X

C3850-NM-4-1G

1 Mode button 4 USB mini-Type B (console) port

2 Status LEDs 5 10/100/1000 PoE+ Ethernet ports

3 USB Type A storage port 6 Network module

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Chapter 1 Product Overview

ACTV

Figure 1-2 Catalyst 3850-24P-L Switch Front Panel

Front Panel

1 Mode button 4 USB mini-Type B (console) port

2 Status LEDs 5 10/100/1000 PoE+ Ethernet ports

3 USB Type A storage port 6 Network module

10/100/1000 Ethernet Ports

The 10/100/1000 Ethernet ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category 5, Category 5e, or Category 6 unshielded twisted pair (UTP) cable. The 10BASE-T traffic can use Category 3 or Category 4 UTP cable.

For information about the 10/100/1000 Ethernet port connections and specifications, see the

“10/100/1000 Ethernet Port Connections” section on page 2-19 and Appendix B, “Connector and Cable Specifications.”

Catalyst 3850 PoE+

01X

13X

24X

C3850-NM-4-1G

344514

PoE, PoE+, and Cisco UPOE Ports

The PoE+ and Cisco Universal Power Over Ethernet (Cisco UPOE) ports use the same connectors as described in the “10/100/1000 Ethernet Ports” section on page 1-5.

They provide:

• PoE+ ports: Support for IEEE 802.3af-compliant powered devices (up to 15.4 W PoE per port) and

support for IEEE 802.3at-compliant powered devices (up to 30 W PoE+ per port). The maximum total PoE power in a 1RU switch is 1800 W.

• Cisco UPOE ports: Support for powered devices on all four Ethernet signal pairs (up to 60 W Cisco

UPOE per port).

• Support for Cisco-enhanced PoE.

• Support for prestandard Cisco powered devices.

• Configuration for StackPower. When the switch internal power supply module(s) cannot support the

total load, StackPower configurations allow the switch to leverage power available from other switches.

• Configurable support for Cisco intelligent power management, including enhanced power

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negotiation, power reservation, and per-port power policing.

Catalyst 3850 Switch Hardware Installation Guide

1-5

Front Panel

Depending on the installed power supply modules, each port can deliver up to 60 W of Cisco UPOE. See

Table 1-15 on page 1-19 for the power supply matrix that defines the available PoE, PoE+, and Cisco

UPOE power per port. The output of the PoE+ circuit has been evaluated as a Limited Power Source (LPS) per IEC 60950-1.

Note For information about power supply modules, PoE+ port connections, and PoE+ specifications, see the

“Power Supply Modules” section on page 1-18, the “PoE+ and Cisco UPOE Port Connections” section on page 2-20, and Appendix B, “Connector and Cable Specifications.”

Management Ports

• Ethernet management port (see the “Ethernet Management Port” section on page 1-23)

• RJ-45 console port (EIA/TIA-232) (see the “RJ-45 Console Port” section on page 1-23)

• USB mini-Type B console port (5-pin connector)

You can connect the switch to a host such as a Windows workstation or a terminal server through the Ethernet management port, the RJ-45 console port, or the USB console port (USB mini-Type B port).

The USB console port connection uses a USB Type A to 5-pin mini-Type B cable. The USB console interface speeds are the same as the RJ-45 console interface speeds.

Chapter 1 Product Overview

USB Mini-Type B Port

The switch provides a USB mini-Type B console connection on the front panel, and the RJ-45 console port on the switch rear panel. Console output is always active on both connectors, but console input is active on only one connector at a time, with the USB connector taking precedence over the RJ-45 connector.

Use a USB type-A-to-USB 5-pin mini-Type B cable to connect a PC or other device to the switch. The required USB cable is included in the optional accessory kit.

The connected device must include a terminal emulation application.

Windows PCs need a driver for the USB port. See the “Installing the Cisco Microsoft Windows USB

Device Driver” section on page C-4 for installation instructions.

When the switch detects a valid USB connection to a powered device, input from the RJ-45 console port is immediately disabled, and input from the USB console is enabled. Removing the USB connection immediately reenables input from the Ethernet connection. An LED on the switch front panel (see

Figure 1-4) is green when the USB console connection is enabled.

The switch provides a configurable inactivity timeout that reactivates the RJ-45 console if no input activity has occurred on the USB console for a specified time period. After the USB console has been deactivated due to a timeout, you can restore its operation by disconnecting and reconnecting the USB cable. You can disable USB console operation by using Cisco IOS commands. See the switch software configuration guide for details.

Note The 4-pin mini-Type B connectors resemble 5-pin mini-Type B connectors. They are not compatible.

Use only the 5-pin mini-Type B. See Figure 1-3.

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Chapter 1 Product Overview

Figure 1-3 USB Mini-Type B Port

You can use the command-line interface (CLI) to configure an inactivity timeout which reactivates the

RJ-45 console if the USB console has been activated and no input activity has occurred on the USB console for a specified time period.

After the USB console deactivates due to inactivity, you cannot use the CLI to reactivate it. Disconnect and reconnect the USB cable to reactivate the USB console. For information on using the CLI to configure the USB console interface, see the switch software guide.

USB Type A Port

The USB Type A interface provides access to external USB flash devices (also known as thumb drives or USB keys).

Front Panel

253163

The interface supports Cisco USB flash drives with capacities from 64 MB to 1 GB.

Cisco IOS software provides standard file system access to the flash device: read, write, erase, and copy, as well as the ability to format the flash device with a FAT file system.

For more information about the switch management ports, see the switch software configuration guide and the command reference on Cisco.com and the “Connector Specifications” section on page B-1.

Network Modules

The switch supports one hot-swappable network module that provides uplink ports to connect to other devices. The switch should only be operated with either a network module or a blank module installed.

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

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Catalyst 3850 Switch Hardware Installation Guide

1-7

Front Panel

Chapter 1 Product Overview

Table 1-2 Network Modules

Network Module

Description

C3850-NM-4-1G This module has four 1-Gigabit SFP module slots. Any combination of

standard SFP modules are supported. SFP+ modules are not supported.

If you insert an SFP+ module in the 1-Gigabit network module, the SFP+ module does not operate, and the switch logs an error message.

See Figure 3-1 on page 3-2.

C3850-NM-2-10G This module has four slots that support the following combinations:

• Two slots (left side) support only 1-Gigabit SFP modules and two slots

(right side) support either 1-Gigabit SFP or 10-Gigabit SFP modules.

• Three slots (left side) support 1-Gigabit SFP modules and one slot (right

side) supports 10-Gigabit Ethernet SFP+.

Supported combinations of SFP and SFP+ modules:

• Slots 1, 2, 3, and 4 populated with 1-Gigabit SFP modules.

• Slots 1 and 2 populated with 1-Gigabit SFP modules and Slot 4 populated

with one 10-Gigabit SFP+ module.

• Slot 3 and Slot 4 each populated with 10-Gigabit SFP+ modules.

See Figure 3-2 on page 3-2.

C3850-NM-4-10G This module has four 10-Gigabit slots or four 1-Gigabit slots.

Note This is only supported on the 48-port models.

C3850-NM-BLANK This module has no uplink ports.

1. All network modules are hot-swappable.

For information about the network modules, see the “Installing a Network Module in the Switch” section

on page 2-19. For cable specifications, see Appendix B, “Connector and Cable Specifications.”

SFP and SFP+ Modules

The SFP and SFP+ modules provide copper or fiber-optic connections to other devices. These transceiver modules are field-replaceable, and they provide the uplink interfaces when installed in an SFP module slot. The SFP modules have LC connectors for fiber-optic connections or RJ-45 connectors for copper connections.

Use only Cisco SFP and SFP+ modules on the switch. For the latest information about supported SFP and SFP+ modules, refer to the Cisco Transceiver Modules Compatibility Information at:

http://www.cisco.com/en/US/products/hw/modules/ps5455/products_device_support_tables_list.html

For information about SFP modules, see the SFP module documentation and the “Installing SFP and

SFP+ Modules” section on page 3-9. For cable specifications, see Appendix B, “Connector and Cable Specifications.”

The Catalyst 3850 switch supports the SFP module patch cable (CAB-SFP-50CM), a 0.5-meter, copper, passive cable with SFP module connectors at each end. This cable is only used with 1-Gigabit Ethernet SFP ports to connect two Catalyst 3850 switches in a cascaded configuration.

See Figure 3-3 on page 3-3.

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Catalyst 3850 Switch Hardware Installation Guide

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Chapter 1 Product Overview

LEDs

Front Panel

You can use the switch LEDs to monitor switch activity and its performance. Figure 1-4 shows the switch LEDs and the Mode button that you use to select a port mode.

Figure 1-4 Switch Front Panel LEDs

01X

1 STAT (status) 6

CONSOLE (USB mini-Type B (console) port

344176

2 DUPLX (duplex) 7 SYST (system)

3 SPEED 8 ACTV (active)

4 STACK 9 XPS

5 PoE

1. The XPS 2200 is not supported in this release.

2. Only switches with PoE+ ports.

Note The Catalyst 3850 switches might have slight cosmetic differences on the bezels.

10 S-PWR (StackPower)

(Expandable power system)

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Catalyst 3850 Switch Hardware Installation Guide

1-9

Front Panel

SYST LED

Chapter 1 Product Overview

Table 1-3 SYST LED

Color System Status

Off System is not powered on.

Green System is operating normally.

Blinking Green Switch is running POST.

Blinking Amber There is a fault with one of the following:

• Network module (non-traffic-related)

• Power supply

• Fan module

Amber System is receiving power but is not functioning

properly.

For information on the SYST LED colors during POST, see the “Diagnosing Problems” section on

page 6-1.

XPS LED

Note The XPS 2200 is not supported in this release.

Ta b le 1 - 4 X P S L ED

Color XPS Status

Off XPS cable is not installed.

Switch is in StackPower mode.

Green XPS is connected and ready to provide back-up power.

Blinking green XPS is connected but is unavailable because it is providing power to another device

(redundancy has been allocated to a neighboring device).

Amber The XPS is in standby mode or in a fault condition. See the XPS 2200

documentation for information about the standby mode and fault conditions.

Blinking amber The power supply in a switch has failed, and the XPS is providing power to that

switch (redundancy has been allocated to this device).

For information about the XPS 2200, see the Cisco eXpandable Power System 2200 Hardware Installation Guide on Cisco.com:

http://www.cisco.com/go/xps2200_hw

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Chapter 1 Product Overview

Port LEDs and Modes

Each Ethernet port, 1-Gigabit Ethernet module slot, and 10-Gigabit Ethernet module slot has a port LED. These port LEDs, as a group or individually, display information about the switch and about the individual ports. The port mode determines the type of information shown by the port LEDs. Ta ble 1-5 lists the mode LEDs and their associated port modes and meanings.

To select or change a mode, press the Mode button until the desired mode is highlighted. When you change port modes, the meanings of the port LED colors also change. Ta ble 1-6 explains how to interpret the port LED colors in different port modes.

When you press the Mode button on any switch in the switch stack, all the stack switches change to show the same selected mode. For example, if you press the Mode button on the active switch to show the SPEED LED, all the other switches in the stack also show the SPEED LED.

Table 1-5 Port Mode LEDs

Mode LED Port Mode Description

STAT Port status The port status. This is the default mode.

SPEED Port speed The port operating speed: 10, 100, or 1000 Mb/s.

DUPLX Port duplex mode The port duplex mode: full duplex or half duplex.

ACTV Active The active switch status.

STACK Stack member status

Front Panel

The stack member status.

StackWise port status

The StackWise port status. See the “STACK LED” section on

page 1-14.

PoE

1. Only switches with PoE+ ports.

Table 1-6 Meaning of Switch LED Colors in Different Modes

PoE+ port power The PoE+ port status.

Port Mode Port LED Color Meaning

STAT (port status)

Off No link, or port was administratively shut down.

Green Link present, no activity.

Blinking green Activity. Port is sending or receiving data.

Alternating green-amber

Link fault. Error frames can affect connectivity, and errors such as excessive collisions, CRC errors, and alignment and jabber errors are monitored for a link-fault indication.

Amber Port is blocked by Spanning Tree Protocol (STP) and is not

forwarding data.

After a port is reconfigured, the port LED can be amber for up to 30 seconds as STP checks the switch for possible loops.

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Front Panel

Chapter 1 Product Overview

Table 1-6 Meaning of Switch LED Colors in Different Modes (continued)

Port Mode Port LED Color Meaning

SPEED

DUPLX (duplex)

ACTV (data active switch)

STACK (stack member)

10/100/1000/SFP ports

Off Port is operating at 10 Mb/s.

Green Port is operating at 100 Mb/s.

Single green

Port is operating at 1000 Mb/s. flash (on for 100 ms, off for 1900 ms)

Network module slots

Off Port is not operating.

Blinking green Port is operating at up to 10 Gb/s.

Off Port is operating in half duplex.

Green Port is operating in full duplex.

Off The switch is not the active switch.

Note For a standalone switch, this LED is off.

Green The switch is the active switch.

Amber Error during active switch election.

Blinking green Switch is a standby member of a data stack and assumes active

responsibilities if the current active switch fails.

Off No stack member corresponding to that member number.

Blinking green Stack member number.

Green Member numbers of other stack member switches.

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Chapter 1 Product Overview

Table 1-6 Meaning of Switch LED Colors in Different Modes (continued)

Port Mode Port LED Color Meaning

PoE+

Front Panel

Off PoE+ is off.

If the powered device is receiving power from an AC power source, the port LED is off even if the device is connected to the switch port.

Green PoE+ is on. The port LED is green when the switch port is providing

power.

Alternating green and

PoE+ is denied because providing power to the powered device will exceed the switch power capacity.

amber

Blinking amber PoE+ is off due to a fault or because it has exceeded a limit set in

the switch software.

Caution PoE+ faults occur when noncompliant cabling or

powered devices are connected to a PoE+ port. Use only standard-compliant cabling to connect Cisco prestandard IP Phones and wireless access points or IEEE 802.3af-compliant devices to PoE+ ports. You must remove from the network any cable or device that causes a PoE+ fault.

USB Console LED

S-PWR LED

Amber PoE+ for the port has been disabled.

Note PoE+ is enabled by default.

1. Only switches with PoE or PoE+ ports.

The USB console LED (Figure 1-4) shows whether there is an active USB connection to the port.

Table 1-7 USB Console Port LED

Color Description

Off USB console is disabled.

Green USB console is enabled.

Table 1-8 S-PWR LED

Color Description

Off StackPower cable is not connected, or the switch is in standalone

mode.

Green Each StackPower port is connected to another switch.

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Front Panel

ACTV LED

Chapter 1 Product Overview

Table 1-8 S-PWR LED

Color Description

Blinking Green This appears on the switch in a StackPower ring configuration

that detects an open ring or has only one StackPower cable connected.

Amber There is a fault: load shedding is occurring, a StackPower cable

is defective, or administrative action is required. See the switch software configuration guide for information about configuring StackPower.

Blinking Amber The StackPower budget is not sufficient to meet current power

demands.

Ta b le 1 - 9 A C TV LE D

Color Description

Off Switch is not the active switch.

Green Switch is the active switch or a standalone switch.

Amber An error occurred when the switch was selecting the active

switch, or another type of stack error occurred.

Slow blinking green Switch is in stack standby mode.

STACK LED

The STACK LED shows the sequence of member switches in a stack. Up to four switches can be members of a stack. The first four port LEDs show the member number of a switch in a stack. Figure 1-5 shows the LEDs on the first switch, which is stack member number 1. For example, if you press the Mode button and select Stack, the LED for port 1 blinks green. The LEDs for ports 2 and 3 are solid green, as these represent the member numbers of other switches in the stack. The other port LEDs are off because there are no more members in the stack.

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Catalyst 3850 Switch Hardware Installation Guide

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Chapter 1 Product Overview

01X

ACTV

Figure 1-5 STACK LED

Front Panel

PoE LED

01X

12X

13X

12X

13X

12X

13X

24X

25X

24X

25X

24X

25X

36X

37X

36X

37X

Catalyst 3850 48 PoE+

48X

C3850-NM-4-1G

1 Stack member 1 4 LED blinks green to show that this is switch 1 in the stack.

2 Stack member 2 5 LED is solid green to show that switch 2 is a stack member.

3 Stack member 3 6 LED is solid green to show that switch 3 is a stack member.

When you select the STACK LED mode, the representative STACK LEDs are green when the StackWise ports are up, and the representative STACK LEDs are amber when the ports are down.

The PoE LED indicates the status of the PoE mode: either PoE, PoE+, or Cisco UPOE.

Table 1-10 PoE LED Status

344178

Color Status of PoE mode (PoE, PoE+, or Cisco UPOE)

Off PoE mode is not selected. None of the 10/100/1000 ports have been denied power

or are in a fault condition.

Green PoE mode is selected, and the port LEDs show the PoE mode status.

Blinking amber PoE mode is not selected. At least one of the 10/100/1000 ports has been denied

power, or at least one of the 10/100/1000 ports has a PoE mode fault.

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Front Panel

344177

C3850-NM-4-1G

Catalyst 3850 48 PoE+

Network Module LEDs

Figure 1-6 Network Module LEDs

Chapter 1 Product Overview

1 G1 LED 3 G3 LED

2 G2 LED 4 G4 LED

Table 1-11 Network Module LEDs

Color Network Module Link Status

Off Link is off.

Green Link is on; no activity.

Blinking green Activity on a link; no faults.

Note The LED will blink green even when there is very little

control traffic.

Blinking amber Link is off due to a fault or because it has exceeded a limit set in the

switch software.

Caution Link faults occur when noncompliant cabling is

connected to an SFP or SFP+ port. Use only standard-compliant cabling to connect to Cisco SFP and SFP+ ports. You must remove from the network any cable or device that causes a link fault.

Amber Link for the SFP or SFP+ has been disabled.

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Chapter 1 Product Overview

CONSOLE

MGMT

344179

105

1196 6 7

109

PWR-C1-715WAC

Rear Panel

The switch rear panel includes StackWise connectors, StackPower connectors, ports, fan modules, and power supply modules. See Figure 1-7.

Figure 1-7 Catalyst 3850 Switch Rear Panel

1 Ground connector 7 StackPower connector

2 CONSOLE (RJ-45 console port) 8 StackPower connector

3 MGMT (RJ-45 10/100/1000 management

9 AC OK (input) status LED

port)

4 RESET button 10 PS OK (output) status LED

5 Fan module 11 Power supply modules (AC power supply

modules shown)

6 StackWise port connector

RJ-45 Console Port LED

Table 1-12 RJ-45 Console Port LED

Color RJ-45 Console Port Status

Off RJ-45 console is disabled. USB console is active.

Green RJ-45 console is enabled. USB console is disabled.

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Rear Panel

StackWise Ports

StackWise ports are used to connect switches in StackWise stacking configurations. The Catalyst 3850 switch ships with a 0.5-meter StackWise cable that you can use to connect the StackWise ports. For more information on StackWise cables, see StackWise Cables, page B-5.

Caution Use only approved cables, and connect only to similar Cisco equipment. Equipment might be damaged

if connected to nonapproved Cisco cables or equipment.

Power Supply Modules

The 24- and 48-port switches are powered through one or two internal power supply modules.

Supported power supply modules:

• PWR-C1-350WAC

• PWR-C1-715WAC

Chapter 1 Product Overview

• PWR-C1-1100WAC

• PWR-C1-440WDC

The switch has two internal power supply module slots. You can use two AC modules, two DC modules, a mixed configuration of one AC and one DC power supply module, or one power supply module and a blank module.

The switch can operate with either one or two active power supply modules or with power supplied by a stack. A Catalyst 3850 switch that is in a StackPower stack can operate with power supplied by other switches in the stack.

Table 1-1 show the default power supply modules that ship with each switch model. All power supply

modules (except the blank modules) have internal fans. All switches ship with a blank power supply module in the second power supply slot.

Caution Do not operate the switch with one power supply module slot empty. For proper chassis cooling, both

power supply module slots must be populated with either a power supply or a blank module.

The 350-W and 715-W AC power supply modules are autoranging units that support input voltages between 100 and 240 VAC. The 1100-W power supply module is an autoranging unit that supports input voltages between 115 and 240 VAC. The 440-W DC power supply module has dual input feeds (A and B) and supports input voltages between 36 and 72 VDC. The output voltage range is 51–57 V.

Each AC power supply module has a power cord for connection to an AC power outlet. The 1100-W and 715-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The DC-power supply module must be wired to a DC-power source.

1-18

Table 1-1 3 , Tabl e 1 -14, and Tab l e 1 - 15 shows the PoE available and PoE requirements for Catalyst 3850

switches.

Catalyst 3850 Switch Hardware Installation Guide

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Chapter 1 Product Overview

Table 1-13 Available PoE with AC Power Supply

Models Default Power Supply Available PoE

24-port data switch PWR-C1-350WAC —

48-port data switch

24-port PoE switch PWR-C1-715WAC 435 W

48-port PoE+ switch

48-port full PoE+ switch PWR-C1-1100WAC 800 W

24-port Cisco UPOE switch

48-port Cisco UPOE switch

Table 1-14 Available PoE with DC Power Supply

Rear Panel

PWR-C1-1100WAC 800 W

Number of Power

Models

Supplies Available PoE

24-port PoE+ switch 1 220 W

2660 W

48-port PoE+ switch 1 185 W

2625 W

24-port Cisco UPOE switch

48-port Cisco UPOE switch

Table 1-15 Switch Power Supply Requirements for PoE, PoE+, and Cisco UPOE

PoE Option 24-Port Switch 48-Port Switch

PoE (up to 15.4 per port)

1220 W

2660 W

1185 W

2625 W

(1) 715-W These are the combinations of power

supplies:

• (1) 1100-W

• (1) 715-W + (1) 715-W

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Rear Panel

Chapter 1 Product Overview

Table 1-15 Switch Power Supply Requirements for PoE, PoE+, and Cisco UPOE (continued)

PoE Option 24-Port Switch 48-Port Switch

PoE+ (up to 30 W per ports

Cisco UPOE (up to 60 W per port)

These are the combinations of power supplies:

• (1) 1100-W

• (1) 715-W 715-W

(2) 1100-W These are the combinations of power

These are the combinations of power supplies:

• (1) 1100-W + (1) 715-W

• (2) 1100-W

supplies:

(1) 1100-W + (1) 715-W

(2) 1100-W

Note Up to 30 PoE ports can receive

full Cisco UPOE.

1. A 48-port switch with one 715-W power supply provides up to 8.7 W of PoE to all ports.

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Chapter 1 Product Overview

The power supply modules have two status LEDs.

Table 1-16 Switch Power Supply Module LEDs

AC-Power Supply Module LEDs

AC OK Description PS OK Description

Off No AC input power. Off Output is disabled, or input is

Green AC input power present. Green Power output to switch active.

DC-Power Supply Module LEDs

DC OK Description PS OK Description

Off No DC input power. Off Output is disabled, or input is

Green DC input power present. Green Power output to switch active.

Rear Panel

outside operating range (AC LED is off).

Red Output has failed.

outside operating range (DC LED is off).

Red Output has failed.

Fan Modules

Note Three fans are required for proper cooling.

For information about replacing a power supply module, wiring a DC power supply module, and module specifications, see Chapter 4, “Power Supply Installation,” and Appendix A, “Technical Specifications.”

The switch has three internal hot-swappable 12-V fan modules. The air circulation system consists of the fan modules and the power supply modules. The airflow patterns vary depending on the power supply configuration.

Figure 1-8 shows the airflow patterns for the 24- and 48-port switches. The blue arrow shows cool air

flow, and the red arrow shows warm air flow. When the fan modules are operating properly, a green LED is on at the top left corner of the fan assembly (viewed from the rear). If the fan fails, the LED turns to amber. The switch can operate with two operational fans, but the failed fan should be replaced as soon as possible to avoid a service interruption due to a second fan fault.

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1-21

Rear Panel

yst

3650

24P

344180

Catalys

t 3850 48 PoE+

01X

13X

12X

24X

25X

36X

37X

48X

A CT

Chapter 1 Product Overview

Table 1-17 Switch Fan Module

Fan Module Description

FAN-T1= Fan Module

Figure 1-8 24- and 48-Port Switch Airflow Patterns

For information about installing a fan module and fan specifications, see Chapter 5, “Installing the Fan,” and Appendix A, “Technical Specifications.”

StackPower Connector

The Catalyst 3850 switches have a StackPower connector for use with Cisco StackPower cables to configure a switch power stack that includes up to four switches. A switch power stack can be configured in redundant or power-sharing mode.

You can order these StackPower cables from your Cisco sales representative:

• CAB-SPWR-30CM (0.3-meter cable)

• CAB-SPWR-150CM (1.5-meter cable)

For details about connecting StackPower cables and StackPower guidelines, see the “Planning a

StackPower Stack” section on page 2-8.

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Chapter 1 Product Overview

Management Ports

Ethernet Management Port

You can connect the switch to a host such as a Windows workstation or a terminal server through the 10/100/1000 Ethernet management port or one of the console ports (see Figure 1-7). The 10/100/1000 Ethernet management port is a VPN routing/forwarding (VRF) interface and uses a RJ-45 crossover or straight-through cable.

Table 1-1 8 shows the Ethernet management port LED colors and their meanings.

Table 1-18 Ethernet Management Port LED

Color Description

Green Link up but no activity.

Blinking green Link up and activity.

Off Link down.

Management Options

RJ-45 Console Port

The RJ-45 console port connection uses the supplied RJ-45-to-DB-9 female cable.

Table 1-1 9 shows the RJ-45 console port LED colors and their meanings.

Table 1-19 RJ-45 Console LEDs

Color Description

Green RJ-45 console port is active.

Off The port is not active.

Management Options

• Cisco Network Assistant

Cisco Network Assistant is a PC-based network management GUI application for LANs. You can use the GUI to configure and manage switch clusters or standalone switches. Cisco Network Assistant is available at no cost and can be downloaded from this URL:

http://www.cisco.com/pcgi-bin/tablebuild.pl/NetworkAssistant

For information on starting the Network Assistant application, see the Getting Started with Cisco Network Assistant guide on Cisco.com.

• Cisco IOS CLI

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You can configure and monitor the switch and switch cluster members from the CLI. You can access the CLI by connecting your management station directly to the switch console port or by using Telnet from a remote management station. See the switch command reference on Cisco.com for more information.

Catalyst 3850 Switch Hardware Installation Guide

1-23

Management Options

• Cisco Prime Infrastructure

Cisco Prime Infrastructure combines the wireless functionality of Cisco Prime Network Control System (NCS) and the wired functionality of Cisco Prime LAN Management Solution (LMS), with application performance monitoring and troubleshooting capabilities of Cisco Prime Assurance Manager. For more information, see the Cisco Prime Infrastructure documentation on Cisco.com.

http://www.cisco.com/en/US/products/ps12239/index.html

Network Configurations

See the switch software configuration guide on Cisco.com for network configuration concepts and examples of using the switch to create dedicated network segments and interconnecting the segments through Gigabit Ethernet connections.

Chapter 1 Product Overview

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CHAP T E R

Switch Installation

This chapter describes how to install and connect a Catalyst 3850 switch. It also includes planning and cabling considerations for stacking switches. Read the topics and perform the procedures in this order:

• Preparing for Installation, page 2-1

• Planning a Switch Data Stack, page 2-4

• Planning a StackPower Stack, page 2-8

• Installing the Switch, page 2-11

• Connecting to the StackWise Ports, page 2-17

• Installing a Network Module in the Switch, page 2-19

• Connecting Devices to the Ethernet Ports, page 2-19

• Where to Go Next, page 2-21

For initial switch setup, how to assign the switch IP address, and for powering information, see the Catalyst 3850 Switch Getting Started Guide on Cisco.com.

Preparing for Installation

• Safety Warnings, page 2-1

• Installation Guidelines, page 2-3

• Tools and Equipment, page 2-4

Safety Warnings

This section includes the basic installation caution and warning statements. Translations of the warning statements appear in the Regulatory Compliance and Safety Information for the Catalyst 3850 Switch document available at Cisco.com. Read this section before you start the installation procedure.

Warning

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Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals.

Statement 43

Catalyst 3850 Switch Hardware Installation Guide

2-1

Preparing for Installation

Chapter 2 Switch Installation

Warning

Do not stack the chassis on any other equipment. If the chassis falls, it can cause severe bodily injury and equipment damage.

Ethernet cables must be shielded when used in a central office environment.

Statement 48

Statement 171

Voice over IP (VoIP) service and the emergency calling service do not function if power fails or is disrupted. After power is restored, you might have to reset or reconfigure equipment to regain access to VoIP and the emergency calling service. In the USA, this emergency number is 911. You need to be aware of the emergency number in your country.

Statement 361

If a Cisco external power system is not connected to the switch, install the provided connector cover on the back of the switch.

Statement 386

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Statement 1001

Read the installation instructions before connecting the system to the power source.

Statement 1004

Warning

This unit is intended for installation in restricted access areas. A restricted access area can be accessed only through the use of a special tool, lock and key, or other means of security.

Statement 1017

The plug-socket combination must be accessible at all times, because it serves as the main disconnecting device.

Use copper conductors only.

Statement 1019

Statement 1025

This unit might have more than one power supply connection. All connections must be removed to de-energize the unit.

Statement 1028

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Ultimate disposal of this product should be handled according to all national laws and regulations.

Statement 1040

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Chapter 2 Switch Installation

Preparing for Installation

Warning

Note The grounding architecture of this product is DC-isolated (DC-I).

For connections outside the building where the equipment is installed, the following ports must be connected through an approved network termination unit with integral circuit protection: 10/100/1000 Ethernet.

To prevent the system from overheating, do not operate it in an area that exceeds the maximum recommended ambient temperature of: 113°F (45°C)

Installation of the equipment must comply with local and national electrical codes.

To prevent airflow restriction, allow clearance around the ventilation openings to be at least: 3 in. (7.6 cm)

Statement 1044

Installation Guidelines

Statement 1047

Statement 1074

Statement 1076

Before installing the switch, verify that these guidelines are met:

• Clearance to front and rear panels requires that

–

Front-panel indicators can be easily read.

–

Clearance is at least 4.4 in. (11.1 cm) from switch rear panel.

–

Access to ports is sufficient for unrestricted cabling.

–

AC power cord can reach from the AC power outlet to the connector on the switch rear panel.

–

The SFP or SFP+ module minimum bend radius and connector length is met. See the SFP or SFP+ module documentation for more information.

• For switches with the optional 1100-W power-supply module (PWR-C1-1100WAC=), first

rack-mount the switch before installing the power-supply module.

• Make sure power-supply modules and fan modules are securely inserted in the chassis before

moving the switch.

• When connecting or disconnecting the power cord on a switch that is installed above or below a

1100-W power supply-equipped switch, you might need to remove the module from the switch to access the power cord.

• Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent

lighting fixtures. Make sure that the cabling is safely away from other devices that might damage the cables.

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Planning a Switch Data Stack

• For copper connections on Ethernet ports, cable lengths from the switch to connected devices can

be up to 328 feet (100 meters).

• For cable requirements for SFP+ module connections, see the “Cable and Adapter Specifications”

section on page B-5. Each port must match the wave-length specifications on the other end of the

cable, and the cable must not exceed the minimum cable length.

• Operating environment is within the ranges listed in Appendix A, “Technical Specifications.”

• Airflow around the switch and through the vents is unrestricted.

• Temperature around the unit does not exceed 113°F (45°C). If the switch is installed in a closed or

multirack assembly, the temperature around it might be greater than normal room temperature.

• Cisco Ethernet switches are equipped with cooling mechanisms, such as fans and blowers. However,

these fans and blowers can draw dust and other particles, causing contaminant buildup inside the chassis, which can result in system malfunction. You must install this equipment in an environment as free from dust and foreign conductive material (such as metal flakes from construction activities) as is possible.

Tools and Equipment

Chapter 2 Switch Installation

You need to supply a number-2 Phillips screwdriver to rack-mount the switch, to install network modules, and to install StackPower cables.

Verifying Switch Operation

Before you install the switch in a rack, or on a table or shelf, you should power on the switch and verify that the switch passes POST. See the “Running Express Setup” section in the getting started guide for the steps required to connect a PC to the switch and to run Express Setup.

Powering Off the Switch

After a successful POST, disconnect the power cord from the switch. Install the switch in a rack, on a table, or on a shelf as described in the Chapter 2, “Installing the Switch,” section.

Planning a Switch Data Stack

Catalyst 3850 switches can share bandwidth by using data stacking.

• Switch Stacking and Power Stacking Guidelines, page 2-5

• Data Stack Cabling Configurations, page 2-5

• Data Stack Bandwidth and Partitioning Examples, page 2-6

• Installing the Switch, page 2-11

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Chapter 2 Switch Installation

Switch Stacking and Power Stacking Guidelines

For general concepts and management procedures for switch stacks, see the switch software configuration guide on Cisco.com.

Before connecting the switches in a stack, keep in mind these stacking guidelines:

• Size of the switch and any optional power-supply module. The 1100-W power-supply module is

longer than the other modules. Stacking switches with the same power-supply modules together makes it easier to cable the switches. For switch dimensions, see Appendix A, “Technical

Specifications.”

• Length of cable. Depending on the configurations that you have, you might need different-sized

cables. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If you need the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable part numbers, see the “StackWise Ports” section on page 1-18. The “Data Stack Cabling

Configurations” section on page 2-5 provides examples of recommended configurations.

• For rack-mounted switch stacks that are members of a StackPower stack as well as a data stack, see

the “Planning a StackPower Stack” section on page 2-8.

• You can create data stacks with up to four switches in a stack.

Data Stack Cabling Configurations

Figure 2-1 is an example of a recommended configuration that uses the supplied 0.5-meter StackWise

cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration provides redundant connections.

The configuration example (Figure 2-1) uses the supplied 0.5-meter StackWise cable. The example shows the full-ring configuration that provides redundant connections.

Figure 2-1 Data Stacking the Catalyst 3850 Switches in a Rack or on a Table Using the 0.5-meter

StackWise Cables

CONSOLE

MGMT

CONSOLE

MGMT

CONSOLE

MGMT

CONSOLE

MGMT

PWR-C1-715WAC PWR-C1-715WAC

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Figure 2-2 shows a recommended configuration when the switches are mounted side-by-side. Use the

1-meter and the 3-meter StackWise cables to connect the switches. This configuration provides redundant connections.

Catalyst 3850 Switch Hardware Installation Guide

2-5

Data Stack Cabling Configurations

Figure 2-2 Data Stacking up to Four Switches in a Side-by-Side Mounting

Data Stack Bandwidth and Partitioning Examples

This section provides examples of data stack bandwidth and possible data stack partitioning.

Figure 2-3 shows a data stack of Catalyst 3850 switches that provides full bandwidth and redundant

StackWise cable connections.

Figure 2-3 Example of a Data Stack with Full Bandwidth Connections

Chapter 2 Switch Installation

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344184

Figure 2-4 shows an example of a stack of Catalyst 3850 switches with incomplete StackWise cabling

connections. This stack provides only half bandwidth and does not have redundant connections.

Figure 2-4 Example of a Data Stack with Half Bandwidth Connections

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Chapter 2 Switch Installation

Figure 2-5 and Figure 2-6 show data stacks of Catalyst 3850 switches with failover conditions. In Figure 2-5, the StackWise cable is bad in link 2. Therefore, this stack provides only half bandwidth and

does not have redundant connections. In Figure 2-6, link 2 is bad. Therefore, this stack partitions into two stacks, and the top and bottom switches become the active switch in the stack. If the bottom switch is a member (not active or standby switch), it reloads.

Figure 2-5 Example of a Data Stack with a Failover Condition

Data Stack Cabling Configurations

Figure 2-6 Example of a Partitioned Data Stack with a Failover Condition

Power-On Sequence for Switch Data Stacks

Consider these guidelines before you power on the switches in a stack:

• The sequence in which the switches are first powered on might affect the switch that becomes the

active switch and the standby switch.

• There are two ways to elect an active switch:

–

If you want a particular switch to become the active switch, configure it with the highest priority. Among switches with same priority, the switch with the lowest MAC address becomes the active switch.

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–

If you want a particular switch to become the active switch, power on that switch first. This switch remains the active switch until a reelection is required. After 2 minutes, power on the other switches in the stack. If you have no preference as to which switch becomes the active switch, power on all the switches in the stack within 1 minute. These switches participate in the active switch election. Switches powered on after 2 minutes do not participate in the election.

If changes are made to the stack without powering down the switches, the following results can occur:

• If two operating partial ring stacks are connected together using a stack cable, a stack merge can

take place. This situation reloads the whole stack (all switches in the stack).

Catalyst 3850 Switch Hardware Installation Guide

2-7

Planning a StackPower Stack

• If some switches in the stack are completely separated from the stack, a stack split can take occur.

• A stack split can occur on a full ring stack if:

• A stack split can occur in a partial ring stack if:

• In a split stack, depending on where the active and standby switches are located, either two stacks

Note These results depend on how the switches are connected. You can remove two or more switches

For conditions that can cause a stack reelection or to manually elect the active switch, see the stacking software configuration guide on Cisco.com at this URL:

http://www.cisco.com/go/cat3850_docs

Chapter 2 Switch Installation

–

More than one running switch is removed without powering down.

–

More than one stack cable is removed without powering down.

–

A switch is removed without powering down.

–

A stack cable is removed without powering down.

might be formed (with the standby taking over as the new active switch in the newly formed stack) or all the members in the newly formed stack might reload.

from the stack without splitting the stack.

Planning a StackPower Stack

Catalyst 3850 switches can share power by using the StackPower feature.

• StackPower Stacking Guidelines, page 2-8

• StackPower Cabling Configurations, page 2-9

StackPower Stacking Guidelines

You can configure a StackPower stack for either power sharing or redundancy. In power-sharing mode, the power of all the power supplies in the stack is aggregated and distributed among the stack members.

In redundant mode, when the total power budget of the stack is calculated, the wattage of the largest power supply is not included. That power is held in reserve and used to maintain power to switches and attached devices when one power supply fails. Following the failure of a power supply, the StackPower mode becomes power sharing.

Note Power-sharing mode is the recommended configuration for Catalyst 3850 switches.

For general concepts and management procedures for switch power stacks, see the software stacking configuration guide on Cisco.com.

Before connecting the switches in a power stack, keep in mind these guidelines:

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Chapter 2 Switch Installation

253393

• Size of the switch and any optional power supply module. The 1100-W power-supply module is

1.5 inches (3.81 cm) longer than the other modules, and with the attached cable retention clip, it extends 3 inches (7.62 cm) from the switch chassis. Stacking switches with the same power-supply modules together makes it easier to cable the switches. For switch dimensions, see Appendix A,

“Technical Specifications.”

• Length of cable. Depending on the configurations that you have, you might need different-sized

cables. If you do not specify the length of the StackPower cable, the 0.3 meter cable is supplied. If you need the 1.5 meter cable, you can order it from your Cisco supplier. For cable part numbers, see the “StackPower Connector” section on page 1-22. The “StackPower Cabling Configurations”

section on page 2-9 provides examples of recommended configurations.

• For rack-mounted switch stacks that are members of a data stack and a StackPower stack, see the

“Switch Stacking and Power Stacking Guidelines” section on page 2-5.

StackPower Cabling Configurations

This section describes the recommended cabling configurations for a StackPower stack.

The cable in Figure 2-7 connects a Catalyst 3850 switch to another Catalyst 3850 switch in a power stack or with an XPS. StackPower cables have color bands on the cable ends:

StackPower Cabling Configurations

• The cable end with the green band can connect only to a Catalyst 3850 switch.

• The cable end with the yellow band can connect to a Catalyst 3850 switch or an XPS.

The cable is available in two lengths.

Table 2-1 StackPower Cables

Part Number Cable Type Length

CAB-SPWR-30CM StackPower cable 0.3 meter

CAB-SPWR-150CM StackPower cable 1.5 meter

Figure 2-7 StackPower Cable for Use with Catalyst 3850 Switches

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2-9

StackPower Cabling Configurations

AC OK

PS OK

AC OK

PS OK

Figure 2-8 shows a ring configuration using both of the supplied 0.3-meter StackPower cables and one

1.5-meter cable. In these examples, the switches are stacked in a vertical rack or on a table.

Figure 2-8 StackPower Ring Topology

RESET

CONSOLE

RESET

CONSOLE

RESET

CONSOLE

RESET

CONSOLE

Chapter 2 Switch Installation

PWR-C1-715WAC

PS OK

AC OK

PWR-C1-715WAC

PS OK

S-PWR 1 XPS

S-PWR 2

S-PWR 1

MGMT

XPS

S-PWR 2

S-PWR 1 XPS

S-PWR 2

S-PWR 1 XPS

S-PWR 2

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

C3KX-PWR-715WAC

PS OK

AC OK

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Chapter 2 Switch Installation

StackPower Partitioning Examples

Figure 2-9 and Figure 2-10 show StackPower stacks of Catalyst 3850 switches with failover conditions.

In Figure 2-9, the StackPower cable 2 is faulty. Therefore, this stack does not provide redundancy.

Figure 2-9 Example of a StackPower Stack with a Failover Condition

In Figure 2-10, StackPower port B on the center switch has failed and this stack partitions into two stacks. The top two switches share power, and the bottom switch is now a separate stack.

Installing the Switch

344188

Figure 2-10 Example of a Partitioned StackPower Stack with a Failover Condition

Installing the Switch

• Rack-Mounting, page 2-12

• Table- or Shelf-Mounting, page 2-16

• After Installing the Switch, page 2-16

The illustrations shown in this section show the Catalyst 3850-48 PoE+ switch as an example. You can install other Catalyst 3850 switches following the same procedures.

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2-11

Installing the Switch

Rack-Mounting

To install the switch in a 19-inch rack, follow the instructions described in this section.

Chapter 2 Switch Installation

Warning

To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure that the system remains stable. The following guidelines are provided to ensure your safety:

• This unit should be mounted at the bottom of the rack if it is the only unit in the rack.

• When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack.

• If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing the unit in the rack.

Statement 1006

The 19-inch brackets are included with the switch. Installing the switch in other rack types requires an optional bracket kit not included with the switch. Figure 2-11 shows the mounting brackets and part numbers.

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Chapter 2 Switch Installation

333901

3 4 5

Figure 2-11 Rack-Mounting Brackets

Installing the Switch

2 Extension rails and brackets for four-point

mounting, includes 19-inch brackets.

1 19-inch brackets (C3850-RACK-KIT=) 4 23-inch brackets (C3850-RACK-KIT=)

(C3850-4PT-KIT=)

3 ETSI brackets (C3850-RACK-KIT=)

Attaching the Rack-Mount Brackets

To install the switch in a rack, use four Phillips flat-head screws to attach the long side of the brackets to the switch for the front- or rear-mounting positions (Figure 2-12). Use four screws to attach the brackets for the front-mounting position.

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5 24-inch brackets (C3850-RACK-KIT=)

Catalyst 3850 Switch Hardware Installation Guide

2-13

Installing the Switch

Chapter 2 Switch Installation

Figure 2-12 Attaching Brackets for 19-inch Racks

333815

2-14

1 Rear-mounting position

2 Number-8 Phillips flat-head screws

3 Front-mounting position

Catalyst 3850 Switch Hardware Installation Guide

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Chapter 2 Switch Installation

333816

ACTV

Mounting the Switch in a Rack

After the brackets are attached to the switch, use the supplied Phillips machine screws to attach the brackets to the rack (Figure 2-14). Use the black Phillips machine screw to attach the cable guide to the left or right bracket.

When you complete the switch installation, see the “After Installing the Switch” section on page 2-16 for more information switch configuration.

Figure 2-13 Mounting the Switch in a Rack

Installing the Switch

1 Phillips machine screw, black 3 Front-mounting position

2 Cable guide 4 Number-12 or number-10 Phillips machine

screws

Catalyst 3850 Switch Hardware Installation Guide

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2-15

Installing the Switch

PWR-C1-715WAC

CONSOLE

MGMT

Table- or Shelf-Mounting

To install the switch on a table or shelf, locate the adhesive strip with the rubber feet in the mounting-kit envelope. Attach the four rubber feet to the recessed areas on the bottom of the chassis (see Figure 2-14).

Figure 2-14 Attaching the Adhesive Pads for Table- or Shelf-Mounting

Chapter 2 Switch Installation

1 Adhesive pads

When you complete the switch installation, see the “After Installing the Switch” section on page 2-16 for more information switch configuration.

After Installing the Switch

After the switch is installed, you might need to:

• Configure the switch by running Express Setup to enter the initial switch configuration. For

instructions, see the switch getting started guide that shipped with the switch and also on Cisco.com.

• Use the CLI setup program to enter the initial switch configuration. See Appendix C, “Configuring

the Switch with the CLI-Based Setup Program.”

• Connect to the front-panel ports. See the “Installing a Network Module in the Switch” section on

page 3-4 and the “Connecting Devices to the Ethernet Ports” section on page 2-19.

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Chapter 2 Switch Installation

CONSOLE

MGMT

RESET

344510

Connecting to the StackWise Ports

Before connecting the StackWise cables, review the “Planning a Switch Data Stack” section on page 2-4. Always use a Cisco-approved StackWise cable to connect the switches.

Step 1 Remove the dust covers from the StackWise cables and StackWise ports, and store them for future use.

Step 2 Connect the cable to the StackWise port on the switch rear panel. Align the connector and connect the

StackWise cable to the StackWise port on the switch rear panel and finger-tighten the screws (clockwise direction). Make sure the Cisco logo is on the top side of the connector as shown in Figure 2-15.

Step 3 Connect the other end of the cable to the port on the other switch and finger-tighten the screws. Avoid

overtightening the screws.

Figure 2-15 Connecting the StackWise Cable in a StackWise Port

Connecting to the StackWise Ports

1 Cisco logo 3 Connector screw

2 Connector screw

Catalyst 3850 Switch Hardware Installation Guide

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2-17

Connecting to the StackPower Ports

Caution Removing and installing the StackWise cable can shorten its useful life. Do not remove and

insert the cable more often than is absolutely necessary (installing and removing it up to 200 times is supported).

When you need to remove the StackWise cable from the connector, make sure to fully unscrew the correct screws. When the connectors are not being used, replace the dust covers.

Connecting to the StackPower Ports

Before connecting the StackPower cables, review the “Planning a StackPower Stack” section on

page 2-8. Always use a Cisco-approved StackPower cable to connect the switches. To prevent

misconfiguration, the StackPower ports on the switch are keyed and have colored bands that match the keying and bands on the StackPower cable connectors.

Follow these steps to connect the StackPower cable to the StackPower ports:

Step 1 Remove the dust covers from the StackPower cable connectors.

Step 2 Connect the end of the cable with a green band to either StackPower port on the first switch. Align the

connector correctly, and insert the it into a StackPower port on the switch rear panel. (Figure 2-16).

Chapter 2 Switch Installation

Step 3 Connect the end of the cable with the yellow band to another Catalyst 3850 switch (to configure

StackPower power sharing).

Step 4 Hand-tighten the captive screws to secure the StackPower cable connectors in place.

Figure 2-16 Connecting the StackPower Cable to a StackPower Port

AC OK

334330

S-PWR

XPS

S-PWR

AC OK

PS OK

PWR-C1-715WAC

Caution Removing and installing the StackPower cable can shorten its useful life. Do not remove and

insert the cable more often than necessary.

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Chapter 2 Switch Installation

Installing a Network Module in the Switch

See these sections for information on network modules:

• Installing a Network Module in the Switch, page 3-4

• All ports in this module default to 10G and should be configured as TenGigabitEthernet1/1/1

through TenGigabitEthernet1/1/4, even when you are operating them as 1G using SFPs. There are only four interfaces which are valid and the other four should not be used even though they still show up in the CLI., page 3-7

Installing and Removing SFP and SFP+ Modules

See these sections for information on SFPs and SFP+:

• Installing SFP and SFP+ Modules, page 3-9

• Removing SFP or SFP+ Modules, page 3-11

Connecting Devices to the Ethernet Ports

• 10/100/1000 Ethernet Port Connections, page 2-19

• PoE+ and Cisco UPOE Port Connections, page 2-20

Caution Category 5e and Category 6 cables can store high levels of static electricity. Always ground the cables

to a suitable and safe earth ground before connecting them to the switch or other devices.

10/100/1000 Ethernet Port Connections

The 10/100/1000 Ethernet ports use RJ-45 connectors with Ethernet pinouts. The maximum cable length is 328 feet (100 meters). The 100BASE-TX and 1000BASE-T traffic requires Category 5, Category 5e, or Category 6 UTP cable. The 10BASE-T traffic can use Category 3 or Category 4 cable.

The autonegotiation feature is enabled by default on the switch. At this setting, the switch ports configure themselves to operate at the speed of attached device. If the attached device does not support autonegotiation, you can explicitly set the switch port speed and duplex parameters. To maximize performance, either let the ports autonegotiate both speed and duplex, or set the port speed and duplex parameters on both ends of the connection.

For simplified cabling, the automatic medium-dependent interface crossover (auto-MDIX) feature is enabled by default on the switch. With auto-MDIX enabled, the switch detects the required cable type for copper Ethernet connections and configures the interface accordingly. Therefore, you can use either a crossover or a straight-through cable for connections to a switch 10/100/1000 Ethernet port regardless of the type of device on the other end of the connection.

See the switch software configuration guide or the switch command reference on Cisco.com for more information about enabling or disabling autonegotiation and auto-MDIX.

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If auto-MDIX is disabled, use the guidelines in Tab l e 2-2 to select the correct cable for connecting the switch 10/100/1000 Ethernet ports to other devices. See the “Cable and Adapter Specifications” section

on page B-5 for cable-pinout descriptions.

Catalyst 3850 Switch Hardware Installation Guide

2-19

Connecting Devices to the Ethernet Ports

Table 2-2 Recommended Ethernet Cables (When Auto-MDIX is Disabled)

Chapter 2 Switch Installation

Device Crossover Cable

Switch to switch Yes No

Switch to hub Yes No

Switch to computer or server No Yes

Switch to router No Yes

Switch to IP phone No Yes

1. 100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5, Category 5e, or Category 6 cable. 10BASE-T traffic can use Category 3 or Category 4 cable.

PoE+ and Cisco UPOE Port Connections

The 10/100/1000 PoE+ and Cisco UPOE ports have the same autonegotiation settings and cabling requirements that are described in the “10/100/1000 Ethernet Port Connections” section on page 2-19. These ports can provide PoE, PoE+, or Cisco UPOE inline power.

PoE inline power supports devices compliant with the IEEE 802.3af standard, as well as prestandard Cisco IP Phones and Cisco Aironet Access Points. Each port can deliver up to 15.4 W of PoE.

PoE+ inline power supports devices compliant with the IEEE 802.3at standard, by delivering up to 30 W of PoE+ power per port to all switch ports.

See Table 1-15 on page 1-19 for the power supply modules required to support PoE, PoE+, and Cisco UPOE on 24- and 48-port switches.

Straight-Through Cable

For more information about the required power-supply module and the PoE specifications, see the

“Power Supply Modules” section on page 1-18 and Appendix A, “Technical Specifications.”

Note Many legacy powered devices, including older Cisco IP phones and access points that do not fully

support IEEE 802.3af, might not support PoE when connected to the switches by a crossover cable.

Caution PoE faults are caused when noncompliant cabling or powered devices are connected to a PoE port. Use

only standard-compliant cabling to connect Cisco prestandard IP Phones, wireless access points, or IEEE 802.3af-compliant devices to PoE ports. A cable or device that causes a PoE fault must be removed from the network.

Warning

Statement 361

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Chapter 2 Switch Installation

Where to Go Next

Warning

Voltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. Avoid using such interconnection methods, unless the exposed metal parts are located within a restricted access location and users and service people who are authorized within the restricted access location are made aware of the hazard. A restricted access area can be accessed only through the use of a special tool, lock and key or other means of security.

Where to Go Next

If the default configuration is satisfactory, the switch does not need further configuration. You can use any of these management options to change the default configuration:

• Start the Network Assistant application, which is described in the Getting Started with Cisco

Network Assistant guide. Through this GUI, you can configure and monitor a switch cluster or an

individual switch.

• Use the CLI to configure the switch as a member of a cluster or as an individual switch from the

console. See the switch command reference on Cisco.com for information on using the CLI with the switch.

• Use the Cisco Prime Infrastructure application.

Statement 1072

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2-21

Where to Go Next

Chapter 2 Switch Installation

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Overview

CHAP T E R

Installing a Network Module

This chapter describes how to install and connect a network module.

• Overview, page 3-1

• Installing a Network Module in the Switch, page 3-4

• Configuring a Network Module, page 3-7

• Removing a Network Module, page 3-9

• SFP and SFP+ Modules, page 3-9

• Finding the Network Module Serial Number, page 3-11

Table 3-1 Network Modules

Network Module

C3850-NM-4-1G This module has four 1-Gigabit SFP module slots. Any combination of

C3850-NM-2-10G This module has four slots that support the following combinations:

Description

standard SFP modules are supported. SFP+ modules are not supported.

If you insert an SFP+ module in the 1-Gigabit network module, the SFP+ module does not operate, and the switch logs an error message.

• Two slots (left side) support only 1-Gigabit SFP modules and two

slots (right side) support either 1-Gigabit SFP or 10-Gigabit SFP modules.

• Three slots (left side) support 1-Gigabit SFP modules and one slot

(right side) supports 10-Gigabit Ethernet SFP+.

Supported combinations of SFP and SFP+ modules:

• Slots 1, 2, 3, and 4 populated with 1-Gigabit SFP modules.

• Slots 1 and 2 populated with 1-Gigabit SFP modules, and Slot 4

populated with one 10-Gigabit SFP+ module.

• Slots 3 and 4 each populated with 10-Gigabit SFP+ modules.

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Catalyst 3850 Switch Hardware Installation Guide

3-1

Overview

C3850-NM-4-1G

1 1

344197

C3850-NM-2-10G

TE3

TE4

344196

11 23

Chapter 3 Installing a Network Module

Table 3-1 Network Modules (continued)

Network Module

Description

C3850-NM-4-10G This module has four 10-Gigabit slots or four 1-Gigabit slots.

Note This is only supported on the 48-port models.

C3850-NM-BLANK This module has no uplink ports.

1. All network modules are hot-swappable.

Figure 3-1 C3850-NM-4-1G Network Module

1 Captive screws 3 LEDs

2 1-Gigabit Ethernet ports

Figure 3-2 C3850-NM-2-10G Network Module

1 Captive screws 3 1-Gigabit Ethernet SFP slots

2 1-Gigabit or 10-Gigabit Ethernet SFP+ slots 4 LEDs

3-2

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Chapter 3 Installing a Network Module

11 2

344195

C3850-NM-4-10G

Figure 3-3 C3850-NM-4-10G Network Module

Overview

1 Captive screws 3 LEDs

2 10-Gigabit slots or 1-Gigabit Ethernet SFP

slots

Figure 3-4 Blank Network Module

1 22

C3850-NM-BLANK

344198

1 Blank module 2 Captive screws

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Catalyst 3850 Switch Hardware Installation Guide

3-3

Installing a Network Module in the Switch

Network Module LEDs

The network module LEDs show the link status for the transceivers.

Table 3-2 Network Module LEDs

Color Link Status

Off Link is off.

Green Link is on, no activity.

Blinking green Activity on a link, no faults.

Blinking amber Link is off due to a fault or because it has exceeded a limit set in the switch

Chapter 3 Installing a Network Module

software.

Caution Link faults are caused when noncompliant cabling is connected

to an SFP or an SFP+ port. Use only standard-compliant cabling to connect to SFP and SFP+ ports. You must remove from the network any cable or device that causes a link fault.

Amber Link for the SFP or SFP+ is disabled.

Installing a Network Module in the Switch

• Safety Warnings, page 3-4

• Tools and Equipment, page 3-5

• Installing Network Modules, page 3-5

Safety Warnings

This section includes the installation cautions and warnings. Translations of the safety warnings appear in the Regulatory Compliance and Safety Information for the Catalyst 3850 Switches on Cisco.com:

http://www.cisco.com/go/cat3850_hw

Read this section before you install a network module.

Caution Proper ESD protection is required whenever you handle equipment. Installation and maintenance

personnel should be properly grounded by grounding straps to eliminate the risk of ESD damage to the equipment. Equipment is subject to ESD damage whenever you remove it.

3-4

Warning

Catalyst 3850 Switch Hardware Installation Guide

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

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Chapter 3 Installing a Network Module

Installing a Network Module in the Switch

Warning

Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry could constitute an energy hazard.

Tools and Equipment

You need to supply a number-2 Phillips screwdriver.

Installing Network Modules

Note Although network modules are hot-swappable, we recommend installing a network module before

powering the switch.

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.

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

Statement 206

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 the “SFP and SFP+ Modules” section on page 1-8.

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

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

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

When installing network modules, observe these precautions:

• Do not remove the EMC plug from the 10-Gigabit Ethernet slot until you install an SFP or SFP+

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

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

fiber-optic cable until you connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.

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

network module more often than is necessary.

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

connecting cables to the switch and other devices.

Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

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Step 2 Remove the module from the protective packaging.

Catalyst 3850 Switch Hardware Installation Guide

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Installing a Network Module in the Switch

344199

C3850-NM-4-1G

Catalyst 3850 48 PoE+

Step 3 Remove the 10-Gigabit Ethernet module slot EMC plug, and save it.

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

module.

Caution 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.

Caution 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.

Step 4 Position the module face up to install it in the module slot. Slide the module into the slot until the back

of the module faceplate is flush with the switch faceplate. Fasten the captive screws to secure the network module in place.

Chapter 3 Installing a Network Module

Figure 3-5 Installing the Network Module in the Switch

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Catalyst 3850 Switch Hardware Installation Guide

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Chapter 3 Installing a Network Module

Configuring a Network Module

C3850-NM-4-1G module

All ports in this module are natively GigabitEthernet and are configured GigabitEthernet1/1/1 though GigabitEthernet1/1/4. There are only four interfaces which are valid and the other four should not be used even though they still show up in the CLI.

Interface Action

GigabitEthernet1/1/1 Configure this interface

GigabitEthernet1/1/2 Configure this interface

GigabitEthernet1/1/3 Configure this interface

GigabitEthernet1/1/4 Configure this interface

TenGigabitEthernet1/1/1 Disregard

TenGigabitEthernet1/1/2 Disregard

TenGigabitEthernet1/1/3 Disregard

TenGigabitEthernet1/1/4 Disregard

Configuring a Network Module

C3850-NM-4-10G module

All ports in this module default to 10G and should be configured as TenGigabitEthernet1/1/1 through TenGigabitEthernet1/1/4, even when you are operating them as 1G using SFPs. There are only four interfaces which are valid and the other four should not be used even though they still show up in the CLI.

Interface Action

GigabitEthernet1/1/1 Disregard

GigabitEthernet1/1/2 Disregard

GigabitEthernet1/1/3 Disregard

GigabitEthernet1/1/4 Disregard

TenGigabitEthernet1/1/1 Configure this interface

TenGigabitEthernet1/1/2 Configure this interface

TenGigabitEthernet1/1/3 Configure this interface

TenGigabitEthernet1/1/4 Configure this interface

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3-7

Configuring a Network Module

C3850-NM-2-10G module

The first two parts are natively 1G ports and the last two ports are natively 10G ports. So you configure the 1G posts as GigabitEthernet1/1/1 through GigabitEthernet1/1/2, and configure the last two ports as TenGigabitEthernet1/1/3 through TenGigabitEthernet1/1/4, even when you are operating the last two ports as 1G. There are only four interfaces which are valid and the other four should not be used even though they still show up in the CLI.

Interface Action

GigabitEthernet1/1/1 Configure this interface

GigabitEthernet1/1/2 Configure this interface

GigabitEthernet1/1/3 Disregard

GigabitEthernet1/1/4 Disregard

TenGigabitEthernet1/1/1 Disregard

TenGigabitEthernet1/1/2 Disregard

TenGigabitEthernet1/1/3 Configure this interface, even when operating as 1G

TenGigabitEthernet1/1/4 Configure this interface, even when operating as 1G

Chapter 3 Installing a Network Module

Supported GBICs

TenGigabitEthernet: GigabitEthenet

• SFP-H10GB-CU1M

• SFP-H10GB-CU3M

• SFP-H10GB-CU5M

• SFP-10G-SR

• SFP-10G-LRM

• SFP-10G-LR

• SFP-10G-ER

• GLC-T (10/100/1000)

• GLC-SX-MM

• GLC-LH-SM

• GLC-SX-MMD

• GLC-LH-SMD

• GLC-ZX-SM

• GLC-ZX-SMD

• GLC-BX-D

• GLC-BX-U

• CWDM SFP

• SFP-GE-S

• SFP-GE-L

• SFP-GE-Z

• DWDM SFP

3-8

• DWDM SFP (add.)

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Chapter 3 Installing a Network Module

Removing a Network Module

Note The switch meets the applicable compliance and thermal specifications when a network module is

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

Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

Caution Do not remove the network module with installed SFP cables or modules. Always remove any cables

and modules before removing the network module from the slot.

Caution 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.

Removing a Network Module

Step 2 Disconnect the cables from the SFP modules.

Step 3 Remove the SFP modules from the network module.

Step 4 Loosen the captive screws that hold the network module in place.

Step 5 Carefully press the tab on the right side of the network module to release it. Grasp the edges of the

module, and carefully slide it out of the slot.

Step 6 Install a replacement network module or a blank module in the slot.

Step 7 Place the module that you removed in an antistatic bag or other protective environment.

SFP and SFP+ Modules

See the “SFP and SFP+ Modules” section on page 1-8 for information on the supported modules.

Installing SFP and SFP+ Modules

You must have an installed network module to use SFP and SFP+ modules.

See the “SFP and SFP+ Modules” section on page 1-8, and the switch release notes on Cisco.com for the list of supported SFP and SFP+ modules. Use only supported SFP modules on the switch. See the following compatibility matrices:

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• 10-Gigabit Ethernet Transceiver Modules Compatibility Matrix

• Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix

For cable specifications, see Appendix B, “Connector and Cable Specifications.”

Observe these precautions:

Catalyst 3850 Switch Hardware Installation Guide

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SFP and SFP+ Modules

333418

C3850-NM-4-1G

Catalyst 3850 48 PoE+

Chapter 3 Installing a Network Module

Warning

Class 1 laser product.

Statement 1008

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

until you are ready to connect the cable. The plugs and caps protect the module ports and cables from contamination and ambient light.

• Removing and installing an SFP module can shorten its useful life. Do not remove and insert any

SFP module more often than is necessary.

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

connecting cables to the switch and other devices.

Caution To avoid damage to the network module, install the network module before you install the SFP or SFP+

modules.

Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

Step 2 Find the send (TX) and receive (RX) markings that identify the top of the SFP module.

On some SFP modules, the send and receive (TX and RX) markings might be shown by arrows that show the direction of the connection.

Step 3 If the SFP module has a bale-clasp latch, move it to the open, unlocked position.

Step 4 Align the module in front of the slot opening, and push until you feel the connector snap into place.

Figure 3-6 Installing an SFP Module in the Network Module

Step 5

If the module has a bale-clasp latch, close it to lock the SFP module in place.

Step 6 Remove the SFP dust plugs and save.

Step 7 Connect the SFP cables.

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Chapter 3 Installing a Network Module

Figure 3-7 Network Module with SFP Modules Installed

Catalyst 3850 48 PoE+

1 Network module 3 Send (TX) optical bore

2 SFP modules 4 Receive (RX) optical bore

Removing SFP or SFP+ Modules

Finding the Network Module Serial Number

C3850-NM-4-1G

333419

Step 1 Attach an ESD-preventive wrist strap to your wrist and to an earth ground surface.

Step 2 Disconnect the cable from the SFP module. For reattachment, note which cable connector plug is send

(TX) and which is receive (RX).

Step 3 Insert a dust plug into the optical ports of the SFP module to keep the optical interfaces clean.

Step 4 If the module has a bale-clasp latch, pull the bale out and down to eject the module. If you cannot use

your finger to open the latch, use a small, flat-blade screwdriver or other long, narrow instrument to open it.

Step 5 Grasp the SFP module, and carefully remove it from the slot.

Step 6 Place the SFP module in an antistatic bag or other protective environment.

Finding the Network Module Serial Number

If you contact Cisco Technical Assistance regarding a network module, you need to know its serial number.

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Catalyst 3850 Switch Hardware Installation Guide

3-11

Finding the Network Module Serial Number

SN: XXXNNNNXXXX

334336, 781-00762-01

C3850-NM-2-10G

Figure 3-8 Network Module Serial Number Location

Chapter 3 Installing a Network Module

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Power Supply Installation

This chapter describes how to install the power supply modules.

• Power Supply Module Overview, page 4-1

• Installation Guidelines, page 4-5

• Installing or Replacing an AC Power Supply, page 4-6

• Installing a DC Power Supply, page 4-7

• Finding the Power Supply Module Serial Number, page 4-12

Power Supply Module Overview

The switch operates with either one or two active power supply modules. A Catalyst 3850 switch that is part of a StackPower stack operates with power supplied by other stack switches.

You can use two AC modules, two DC modules, one AC and one DC module, or one module and a blank cover.

All power supply modules have internal fans. All switches ship with a blank cover in the second power supply slot.

CHAP T E R

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Table 4-1 describes the supported internal power supply modules.

Table 4-1 Power Supply Module Part Numbers and Descriptions

Part Number Description

PWR-C1-1100WAC= 1100-W AC power supply module

PWR-C1-715WAC= 715-W AC power supply module

PWR-C1-350WAC= 350-W AC power supply module

CPWR-C1-440WDC= 440-W DC power supply module

PWR-C1-BLANK Blank cover

For information on available PoE, see these sections:

• Table 1-13 on page 1-19 (available PoE with AC power supply)

• Table 1-14 on page 1-19 (available PoE with DC power supply)

• Table 1-15 on page 1-19 (switch power supply requirements for PoE and PoE+, and Cisco UPOE)

Catalyst 3850 Switch Hardware Installation Guide

4-1

Power Supply Module Overview

Note A 48-port switch with one 715-W power supply provides up to 7.7 W of PoE to all ports.

Each AC power supply module has a power cord for connection to an AC power outlet. The 1100-W and 715-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The DC power supply module must be wired to a DC power source.

Figure 4-1 to Figure 4-4 show the power supply modules.

Figure 4-1 1100-W AC Power Supply

Chapter 4 Power Supply Installation

AC OK

PS OK

PWR-C1-1100WAC

1 1100-W AC power supply module 5 Release latch

2 AC OK LED 6 Power cord retainer

3 PS OK LED 7 Keying feature

4 AC power cord connector

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Chapter 4 Power Supply Installation

Figure 4-2 715-W AC Power Supply Module

Power Supply Module Overview

AC OK

PS OK

PWR-C1-715WAC

1 715-W AC power supply module 5 Release latch

2 AC OK LED 6 Power cord retainer

3 PS OK LED 7 Keying feature

4 AC power cord connector

Figure 4-3 350-W AC Power Supply Module

334376

AC OK

PS OK

PWR-C1-350WAC

334377

1 350-W AC power supply module 5 Release latch

2 AC OK LED 6 Power cord retainer

3 PS OK LED 7 Keying feature

4 AC power cord connector

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4-3

Power Supply Module Overview

DC OK

PWR-C1-440WDC

PS OK

334378

5 6 5 4

INPUT

-36 TO -72V

/12A

OUTPUT

44W MAX

/22A

Figure 4-4 440-W DC Power Supply Module

1 440-W DC power supply module 6 Grounding terminal

2 DC OK LED 7 Release latch

3 PS OK LED 8 Extraction handle

4 Input power terminals (positive polarity) 9 Terminal block safety cover

5 Input power terminals (negative polarity) 10 Keying feature

Chapter 4 Power Supply Installation

If no power supply is installed in a power supply slot, install a power supply slot cover (Figure 4-5).

Figure 4-5 Power Supply Slot Cover

253564

1 Release handles 2 Retainer clips

The power supply modules have two status LEDs.

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Chapter 4 Power Supply Installation

Table 4-2 Switch Power Supply Module LEDs

AC Power Supply Module LEDs

AC OK Description PS OK Description

Off (AC LED is off)

Green AC input power present. Green Power output to switch.

DC Power Supply Module LEDs

DC OK Description PS OK Description

Off (DC LED is off)

Green DC input power present. Green Power output to switch.

Installation Guidelines

No AC input power. Off Output is disabled, or input is

outside operating range.

Red Output has failed.

No DC input power. Off Output is disabled, or input is

outside operating range.

Red Output has failed.

Installation Guidelines

Table 4-1 lists the switches and the compatible power-supply modules. Observe these guidelines when

removing or installing a power supply or fan module:

• Do not force the power supply or fan module into the slot. This can damage the pins on the switch

if they are not aligned with the module.

• A power supply that is only partially connected to the switch can disrupt the system operation.

• Remove power from the power-supply module before removing or installing the module.

• The power supply is hot-swappable. In some configurations, such as full PoE+ or power sharing

mode, removing a power supply causes powered devices to shut down until the power budget matches the input power of a single power supply. To minimize network interruption, hot swap the power supply under these circumstances:

–

The switch is in StackPower mode and sufficient power is available.

–

The switch is powered by other switches in a power stack, and no active backup is in progress.

For the switch commands that display available power budget, see the software configuration guide.

Caution Do not operate the switch with one power-supply module slot empty. For proper chassis cooling, both

module slots must be populated, with either a power supply or a blank module.

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Warning

Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all cards, faceplates, front covers, and rear covers are in place.

Statement 1029

Catalyst 3850 Switch Hardware Installation Guide

4-5

Installing or Replacing an AC Power Supply

Chapter 4 Power Supply Installation

Warning

Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry could constitute an energy hazard.

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

If a Cisco external power system is not connected to the switch, install the provided connector cover on the back of the switch.

Statement 386

Statement 206

Installing or Replacing an AC Power Supply

Step 1 Turn off the power at its source.

Step 2 Remove the power cord from the power cord retainer.

Step 3 Remove the power cord from the power connector.

Step 4 Press the release latch at the right side of the power supply module inward and slide the power supply

out. (Figure 4-6).

Caution Do not leave the power-supply slot open for more than 90 seconds while the switch is operating.

Warning

Step 5 Insert the new power supply into the power-supply slot, and gently push it into the slot (Figure 4-6).

This unit might have more than one power supply connection. All connections must be removed to de-energize the unit.

Statement 1028

When correctly inserted, the 350-W and 715-W power supplies (excluding the power cord retainer) are flush with the switch rear panel. The 1100-W power-supply module extends 1.5 inches from the switch rear panel.

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Figure 4-6 Inserting the AC-Power Supply in the Switch

Installing a DC Power Supply

Step 6

(Optional) Make a loop in the power cord and thread it through the power cord retainer (Figure 4-7).

Figure 4-7 AC-Power Supply with Power Cord Retainer

AC OK

Step 7

PWR-C1-715WAC

PS OK

AC OK

Connect the power cord to the power supply and to an AC power outlet. Turn on the power at the power source.

Step 8 Confirm that the power supply AC OK and PS OK LEDs are green. See Tabl e 1- 16 for a description of

the power supply module LEDs.

Installing a DC Power Supply

• Equipment That You Need, page 4-8

• Grounding the Switch, page 4-8

• Installing the DC Power Supply in the Switch, page 4-11

PS OK

PWR-C1-715WAC

334332

• Wiring the DC Input Power Source, page 4-11

Warning

An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug.

Statement 122

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Installing a DC Power Supply

Chapter 4 Power Supply Installation

Warning

Note The grounding architecture of this product is DC-isolated (DC-I).

Before performing any of the following procedures, ensure that power is removed from the DC circuit.

Statement 1003

This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than: 20 A.

A readily accessible two-poled disconnect device must be incorporated in the fixed wiring.

Statement 1022

Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals are not in service. Be sure uninsulated conductors are not accessible when cover is in place.

Statement 1086

Equipment That You Need

Statement 1005

• Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 pound-force inches

(lbf-in.) of pressure.

• Panduit crimping tool with optional controlled-cycle mechanism (model CT-720, CT-920,

CT-920CH, CT-930, or CT-940CH).

• Wire-stripping tools.

• 12-gauge copper ground wire (insulated or not) for the single-ground connection.

• 8-gauge copper ground wire (insulated or not) for the dual-ground connection.

• Ground lug screw (not included in the accessory kit) and ring lug connector in the switch accessory

kit. For a dual-ground connection, also use the dual-ground adapter and dual lug connector.

• Four leads of 14-gauge copper wire.

• Four fork-type terminals from the DC power supply accessory kit. The terminals must be the proper

size for M3 screws in a Dinkle DT-35-B25-style terminal block.

Grounding the Switch

Follow the grounding procedures at your site and observe these warnings:

Warning

This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available.

Statement 1024

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Chapter 4 Power Supply Installation

Insulation

Wire lead

0.5 in. (12.7 mm) ± 0.02 in. (0.5 mm)

60528

4022

Installing a DC Power Supply

Warning

Caution Follow the grounding procedure instructions, and use a UL-listed lug (included in the accessory kit).

When installing or replacing the unit, the ground connection must always be made first and disconnected last.

Statement 1046

Follow these steps to install either a single-ground lug or a dual-ground lug on the switch. Make sure to follow any grounding requirements at your site.

Step 1 Use the ground lug screw and the lug ring for a single-ground connection. Use the dual-ground adapter

and dual-hole lug for a dual-ground connection.

Step 2 Strip the 12-gauge or 8-gauge ground wire to 0.5 inch (12.7 mm) ± 0.02 inch (0.5 mm) (Figure 4-8).

Stripping more than the recommended amount of wire can leave exposed wire from the connector. Use 12-gauge copper ground wire for the single-ground connection. Use 8-gauge copper ground wire for the dual-ground connection.

Figure 4-8 Stripping the Ground Wire

Step 3 Slide the open end of the ground lug over the exposed area of the wire.

Step 4 Using a Panduit crimping tool, crimp the ground lug to the wire (Figure 4-9).

Figure 4-9 Crimping the Ground Lug

Step 5

Use the ground screw to attach the single-ground lug to the switch rear panel. Use two ground screws to attach the dual-hole lug to the switch rear panel (Figure 4-10).

Step 6 Using a ratcheting torque screwdriver, torque the ground-lug screws to 60 lbf-in. (960 ozf-in.).

Step 7 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack.

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Figure 4-10 Attaching the Ground Lug and Wire Assembly

Chapter 4 Power Supply Installation

1 Single-ground screw and lug ring 2 Dual-ground adapter and dual-hole lug

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Installing the DC Power Supply in the Switch

Before installing the power supply, see the Installation Guidelines, page 4-5.

Step 1 Turn off DC power. To ensure that power is off, change the circuit breakers to the OFF position, and

tape the circuit-breaker switches in the OFF position.

Step 2 Remove the plastic safety cover from the power supply terminal blocks (Figure 4-4).

If you are not replacing a DC power supply, go to Step 5.

Step 3 Use a number-2 Phillips screwdriver to remove the DC-input power wires from the power terminals.

Step 4 Press the release latch at the right side of the power supply module inward, and pull the power supply

out.

Step 5 Insert the power supply in the power-supply slot, and gently push it into the slot (Figure 4-11). When

correctly installed, the DC power supply (excluding the extraction handle) is flush with the switch rear panel.

Figure 4-11 Inserting the DC Power Supply in the Switch

Installing a DC Power Supply

Step 6

Connect the input power as described in the “Wiring the DC Input Power Source” section.

Wiring the DC Input Power Source

Step 1 Using a wire-stripping tool, strip each of the four wires from the DC-input power source to the

appropriate length for the terminals.

Warning

Step 2 Using a Panduit crimping tool, crimp the fork-type terminals to the copper conductor, 90C, 14-AWG DC

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Use copper conductors only.

power input wires.

Statement 1025

Catalyst 3850 Switch Hardware Installation Guide

4-11

Finding the Power Supply Module Serial Number

Step 3 Connect the DC-input power terminals to the terminal blocks. See Figure 4-12 or Figure 4-13. Make sure

to match the polarity (negative to negative, positive to positive) when connecting the wires to the terminal blocks. Connect the ground wire to a grounded metal rack or to earth ground if the switch is not in a grounded rack.

Figure 4-12 DC Source A Isolated From Source B with No Common Ground

Chapter 4 Power Supply Installation

A+

Figure 4-13 DC Source A and Source B Connections with Common Ground

A+

Step 4

Step 5 Replace the terminal block safety cover.

Torque all terminal block screws to 11 lbf-in.

A-

B-

B+

253447

B+

253446

Step 6 Move the DC power source circuit-breakers to the ON position.

Step 7 Confirm that the power supply DC OK and PS OK LEDs are green. See Tab le 4-2 for a description of

the module LEDs.

Finding the Power Supply Module Serial Number

If you contact Cisco Technical Assistance regarding a power supply module, you need to know the serial number. See Figure 4-14 to Figure 4-16 to find the serial number. You can also use the CLI to find out the serial number.

Catalyst 3850 Switch Hardware Installation Guide

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Chapter 4 Power Supply Installation

Figure 4-14 1100-W AC Power Supply Serial Number

Finding the Power Supply Module Serial Number

SN: XXXNNNNXXXX

PWR-C1-1100WAC

Figure 4-15 715-W and 350-W AC Power Supply Module Serial Number

SN: XXXNNNNXXXX

334334, 781-00765-01

334333,781-00764-01

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4-13

Finding the Power Supply Module Serial Number

Figure 4-16 440-W DC Power Supply Module Serial Number

Chapter 4 Power Supply Installation

SN: XXXNNNNXXXX

334335, 781-00763-01

PWR-C1-440WDC

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Overview

CHAP T E R

Installing the Fan

This chapter describes how to install a fan module.

• Overview, page 5-1

• Fan Module Installation, page 5-2

• Finding the Fan Module Serial Number, page 5-3

The switch has three fan modules. Fan modules are hot-swappable. A powered switch should always have more than one operational fan. The switch can operate with two operational fans and one nonfunctional fan, but the failed fan should be replaced as soon as possible to avoid a service interruption due to a second fan fault.

Note Three fans are required for proper cooling.

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Fan Module Installation

Chapter 5 Installing the Fan

Figure 5-1 Fan Module

1 Fan LED 3 Retainer clip

2 Exhaust vent 4 Extraction handles

Fan Module Installation

344200

Installation Guidelines

Observe these guidelines when removing or installing a fan module:

• Do not force the fan module into the slot. This can damage the pins on the switch if they are not

aligned with the module.

• A fan module that is only partially connected can disrupt the system operation.

• The switch supports hot swapping of the fan module. You can remove and replace the module

without interrupting normal switch operation.

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Installing a Fan Module

Step 1 Pinch the fan module release handle, and slide the module out.

Caution You should replace the fan module within 5 minutes to avoid overheating the switch.

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Step 2 Install the fan module in the fan slot, and firmly push it into the slot, applying pressure to the end of the

module, not the extraction handles. When correctly inserted, the fan module is flush with the switch rear panel. When the fan is operating, a green LED is on in the top left corner of the fan. See Figure 5-2.

Finding the Fan Module Serial Number

Warning

Do not reach into a vacant slot when installing or removing a module. Exposed circuitry is an energy hazard.

Statement 206

Figure 5-2 Installing the Fan Module

1 Fan LED

Finding the Fan Module Serial Number

If you contact Cisco Technical Assistance regarding a fan module, you need to know the fan module serial number. See Figure 5-3 for the serial number location.

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5-3

Finding the Fan Module Serial Number

SN: XXXNNNNXXXX

334328,781-00761-01

Figure 5-3 Fan Module Serial Number

Chapter 5 Installing the Fan

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Troubleshooting

• Diagnosing Problems, page 6-1

• Resetting the Switch, page 6-5

• Finding the Switch Serial Number, page 6-6

• Replacing a Failed Data Stack Member, page 6-6

Diagnosing Problems

The switch LEDs provide troubleshooting information about the switch. They show POST failures, port-connectivity problems, and overall switch performance. You can also get statistics from the CLI, or an SNMP workstation. See the software configuration guide, the switch command reference guide on Cisco.com, or the documentation that came with your SNMP application for details.

CHAP T E R

Switch POST Results

Approximately 30 seconds after the switch powers on, it begins the power-on self-test (POST), which can take up to 5 minutes to complete. During POST, the SYSTEM LED blinks green. When POST is complete, the SYSTEM LED turns solid green, the ACTV LED is green if the switch is acting as the active switch.

Note POST failures are usually fatal. Contact your Cisco technical support representative if your switch does

not pass POST.

Switch LEDs

Look at the port LEDs for information when troubleshooting the switch. See the “LEDs” section on

page 1-9 for descriptions of the LED colors and their meanings.

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Diagnosing Problems

Switch Connections

Bad or Damaged Cable

Always examine the cable for marginal damage or failure. A cable might be just good enough to connect at the physical layer, but it could corrupt packets as a result of subtle damage to the wiring or connectors. You can identify this situation because the port has many packet errors or the port constantly flaps (loses and regains link).

• Exchange the copper or fiber-optic cable with a known good cable.

• Look for broken or missing pins on cable connectors.

• Rule out any bad patch panel connections or media convertors between the source and destination.

If possible, bypass the patch panel or eliminate media convertors (fiber-optic-to-copper).

• Try the cable in another port to see if the problem follows the cable.

• For Catalyst 3850 switch StackWise cable, remove and inspect the cable and StackWise port for bent

pins or damaged connectors. If the StackWise cable is bad, replace it with a known good cable.

Chapter 6 Troubleshooting

Ethernet and Fiber Cables

Make sure that you have the correct cable:

• For Ethernet, use Category 3 copper cable for 10 Mbps UTP connections. Use either Category 5,

Category 5e, or Category 6 UTP for 10/100 or 10/100/1000 Mbps connections.

• Verify that you have the correct fiber-optic cable for the distance (100 meters or less) and port type.

Make sure that the connected device ports match and use the same type encoding, optical frequency, and fiber type. For more information about cabling, see the “SFP and SFP+ Module Cable

Specifications” section on page B-5.

• Determine if a copper crossover cable was used when a straight-through was required, or the

reverse. Enable auto-MDIX on the switch, or replace the cable. See Tab le 2-2 for recommended Ethernet cables.

Link Status

Verify that both sides have a link. A broken wire or a shut-down port can cause one side to show a link even though the other side does not have a link.

A port LED that is on does not guarantee that the cable is functional. It might have encountered physical stress, causing it to function at a marginal level. If the port LED does not turn on:

• Connect the cable from the switch to a known good device.

• Make sure that both ends of the cable are connected to the correct ports.

• Verify that both devices have power.

• Verify that you are using the correct cable type. See Appendix B, “Connector and Cable

Specifications” for more information.

6-2

• Look for loose connections. Sometimes a cable appears to be seated but is not. Disconnect the cable

and then reconnect it.

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Chapter 6 Troubleshooting

10/100/1000 Port Connections

A port appears to malfunction:

• Verify the status of all ports. See Table 1-5 on page 1-11 for descriptions of the LEDs and their

meanings.

• Use the show interfaces privileged EXEC command to see if the port is error-disabled, disabled, or

shut down. Reenable the port if necessary.

• Verify the cable type. See Appendix B, “Connector and Cable Specifications.”

PoE and PoE+ Port Connections

A powered device connected to a PoE port does not receive power:

• Verify the status of all ports. See Tab l e 1-6 and Ta b le 1-10 for descriptions of the LEDs and their

meanings.

• Use the show interfaces privileged EXEC command to see if the port is error-disabled, or disabled,

or shut down. Reenable the port if necessary.

• Verify that the power supply installed in the switch meets the power requirements of your connected

devices. See the “Power Supply Modules” section on page 1-18 for more information.

• Verify the cable type. Many legacy powered devices, including older Cisco IP phones and access

points that do not fully support IEEE 802.3af might not support PoE when connected to the switch by a crossover cable. Replace the crossover cable with a straight-through cable.

Diagnosing Problems

Caution Noncompliant cabling or powered devices can cause a PoE port fault. Use only compliant cabling to

Note The output of the PoE circuit has been evaluated as a limited power source (LPS) per IEC 60950.

SFP Modules

connect Cisco prestandard IP phones, wireless access points, or IEEE 802.3af-compliant devices.

Use only Cisco network modules and SFP modules.

• Inspect the network module and SFP module. Exchange the suspect module with a known good

module.

• Verify that the module is supported on this platform. (The switch release notes on Cisco.com list the

SFP and SFP+ modules that the switch supports.)

• Use the show interfaces privileged EXEC command to see if the port or module is error-disabled,

disabled, or shut down. Reenable the port if needed.

• Make sure that all fiber connections are clean and securely connected.

• For CX1 module connections and fiber connections, make sure that cable routing does not violate

the minimum allowed cable bend radius. See the module documentation for specific cabling requirements.

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Diagnosing Problems

Interface Settings

Ping End Device

Chapter 6 Troubleshooting

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

• For long wave SFP+ modules, a mode conditioning patch might improve performance over

maximum link distances with MMF connections.

Verify that the port or interface is not disabled or powered off. If a port or interface is manually shut down on either side of the link, it does not come up until you reenable the interface. Use the show interfaces privileged EXEC command to see if the interface is error-disabled, disabled, or shut down on either side of the connection. If needed, reenable the interface.

Ping from the directly connected switch first, and then work your way back port by port, interface by interface, trunk by trunk, until you find the source of the connectivity issue. Make sure that each switch can identify the end device MAC address in its Content-Addressable Memory (CAM) table.

Spanning Tree Loops

STP loops can cause serious performance issues that look like port or interface problems.

A unidirectional link can cause loops. It occurs when the traffic sent by the switch is received by the neighbor, but the traffic from the neighbor is not received by the switch. A broken cable, other cabling problems, or a port issue could cause this one-way communication.

You can enable UniDirectional Link Detection (UDLD) on the switch to help identify unidirectional link problems. For information about enabling UDLD on the switch, see the “Understanding UDLD” section in the software configuration guide on Cisco.com.

Switch Performance

Speed, Duplex, and Autonegotiation

Port statistics that show a large amount of alignment errors, frame check sequence (FCS), or late-collisions errors, might mean a speed or duplex mismatch.

A common issue occurs when duplex and speed settings are mismatched between two switches, between a switch and a router, or between the switch and a workstation or server. Mismatches can happen when manually setting the speed and duplex or from autonegotiation issues between the two devices.

To maximize switch performance and to ensure a link, follow one of these guidelines when changing the duplex or the speed settings:

• Let both ports autonegotiate both speed and duplex.

• Manually set the speed and duplex parameters for the interfaces on both ends of the connection.

6-4

• If a remote device does not autonegotiate, use the same duplex settings on the two ports. The speed

parameter adjusts itself even if the connected port does not autonegotiate.

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Chapter 6 Troubleshooting

Autonegotiation and Network Interface Cards

Problems sometimes occur between the switch and third-party network interface cards (NICs). By default, the switch ports and interfaces autonegotiate. Laptops or other devices are commonly set to autonegotiate, yet sometimes issues occur.

To troubleshoot autonegotiation problems, try manually setting both sides of the connection. If this does not solve the problem, there could be a problem with the firmware or software on the NIC. You can resolve this by upgrading the NIC driver to the latest version.

Cabling Distance

If the port statistics show excessive FCS, late-collision, or alignment errors, verify that the cable distance from the switch to the connected device meets the recommended guidelines. See the “Cable and

Adapter Specifications” section on page B-5.

Resetting the Switch

If you have configured a new switch with a wrong IP address, or if all of the switch LEDs start blinking when you try to enter Express Setup mode, you can clear the IP address that is configured on the switch.

Note Resetting the switch reboots the switch.

To reset the switch:

1. Press and hold the Mode button (Figure 1-2 on page 1-5).

The switch LEDs begin blinking after about 2 seconds. If the LEDs above the mode button turn solid green, you can release the Mode button and run Express Setup to configure the switch. If the LEDs do not turn solid green, continue with the next step.

2. Continue holding down the Mode button. The LEDs stop blinking after an additional 8 seconds, and

then the switch reboots.

Alternatively, you can press the Reset button on the rear of the switch (approximately 5 seconds) to power cycle the switch.

You can also configure the switch by using the CLI setup procedure. See Appendix C, “Configuring the

Switch with the CLI-Based Setup Program.”

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Finding the Switch Serial Number

If you contact Cisco Technical Assistance, you need to know the switch serial number. Figure 6-1 shows the serial number location. You can also use the show version privileged EXEC command to see the switch serial number.

Figure 6-1 Switch Serial Number Location

SN: XXXNNNNXXXX

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Chapter 6 Troubleshooting

334103, 781-00760-01

Replacing a Failed Data Stack Member

To replace a failed data stack member:

1. The replacement switch must be a Catalyst 3850 switch.

2. Power down the failed switch. Remove AC or DC input power, and if the switch is part of a

StackPower stack, remove the StackPower cables.

3. Make sure the replacement switch is powered off, and then connect it to the stack.

If you had manually set the member numbers for the switch stack, manually assign the member number of the failed switch to the replacement switch. To manually assign the stack member number, see the switch software configuration guide on Cisco.com.

4. Make the same Gigabit Ethernet connections on the replacement switch that were on the failed

switch.

5. Reinstall any modules and cable connections.

6. Power on the replacement switch.

The replacement switch will have the same configuration for all the interfaces as the failed switch and will function the same as the failed switch.

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Technical Specifications

• Switch Specifications, page A-1

• Power Supply Module Specifications, page A-2

• Fan Module Specifications, page A-4

Switch Specifications

Table A-1 Environmental and Physical Specifications

Environmental Ranges

Operating

Storage temperature –40 to 158° F (–40 to 70° C)

Relative humidity 5 to 95% (non-condensing)

Operating altitude Up to 10,000 ft (3,000 m)

Storage altitude Up to 15,000 ft (4,600 m)

Physical Specifications

Dimensions (H x W x D) 1.73 x 17.5 x 17.5 in. (4.4 x 44.5 x 44.5 cm)

Weight

temperature

APPENDIX

23 to 113° F (–5 to 45° C)

(with the FAN FRUs installed but without the power supplies installed)

(weights do not include the network modules, power supplies, or blanks).

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Catalyst 3850 24-port PoE switches

Catalyst 3850 24-port non PoE switches

Catalyst 3850 48-port non PoE switches

Catalyst 3850 48-port PoE switches

1. Minimum ambient temperature for cold start is 32° F (0° C)

13.3 lb (6.0 kg)

13.1 lbs (6.0 kg)

14.2 lbs (6.5 kg)

14.4 lbs (6.5)

Catalyst 3850 Switch Hardware Installation Guide

A-1

Power Supply Module Specifications

Table A-2 Environmental and Physical Specifications for the AC- and DC-Power Supply

Modules

Environmental Ranges

Operating temperature AC power supply: 23 to 113° F (–5 to 45° C)

DC power supply: 23 to 131° F (–5 to 55° C)

Storage temperature –40 to 158° F (–40 to 70° C)

Relative humidity 10 to 95% (non-condensing)

Altitude AC power supply: Up to 10,000 ft (3,000 m)

DC power supply: Up to 13,000 ft (4,000 m)

Physical Specifications

Weight

PWR-C1-1100WAC

PWR-C1-715WAC

3 lb (1.4 kg)

2.8 lb (1.3 kg)

Appendix A Technical Specifications

PWR-C1-350WAC

PWR-C1-440WDC=

Dimensions (H x D x W)

PWR-C1-1100WAC

PWR-C1-715WAC

PWR-C1-350WAC

PWR-C1-440WDC=

Table A-3 Power Specifications for AC Power 24- and 48-Port Switches

Power Specifications

Maximum output power PWR-C1-1100WAC: 1100 W

Input voltage range and frequency PWR-C1-1100WAC: 1100-W, 115 to 240 VAC (autoranging)

Input current PWR-C1-1100WAC:12–6 A

2.6 lb (1.2 kg)

1.58 x 11.72 x 3.25 in. (3.5 x 29.8 x 8.3 cm)

1.58 x 10.22 x 3.25 in. (3.5 x 26 x 8.3 cm)

Note Dimensions shown exclude the extraction handle, which

measures 1.55 in. (3.9 cm) and the keying feature which measures 0.44 in (1.1 cm).

PWR-C1-715WAC: 715 W PWR-C1-350WAC: 350 W

50 to 60 Hz PWR-C1-715WAC: 715 W, PWR-C1-350WAC: 350 W, 100 to 240 VAC (autoranging), 50 to 60 Hz

PWR-C1-715WAC: 10–5 A PWR-C1-350WAC: 4–2 A

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Appendix A Technical Specifications

Table A-3 Power Specifications for AC Power 24- and 48-Port Switches (continued)

Output ratings PWR-C1-1100WAC: –56 V@19.64 A

Total input BTU

Total output BTU

1. The total input and total output BTU ratings refer to input power to the power supply and output power to the switch. The BTU ratings are based on 100 VAC for the 350-W and 715-W power supplies and 115 VAC for the 1100-W power supply.

Table A-4 Power Specifications for DC-Power 24- and 48-Port Switches

Power Specifications

Maximum output power PWR-C1-440WDC: 440 W

Input current PWR-C1-440WDC: 16 –8 A

DC input voltage PWR-C1-440WDC: –36 to –72 VDC

Output ratings PWR-C1-440WDC: –56 V@7.86 A

Voltage range domestic PWR-C1-440WDC: –36 VDC (minimum)

Voltage range international PWR-C1-440WDC: –36 VDC (minimum)

Total input BTU

Total output BTU

Wire gauge for ground connection PWR-C1-440WDC: 12 AWG or 8 AWG

Branch circuit protection PWR-C1-440WDC: 20 A

1. The total input and total output BTU ratings refer to input power to the power supply and output power to the switch. The BTU ratings are based on –36 VDC.

Power Supply Module Specifications

PWR-C1-715WAC: –56 V@12.8 A PWR-C1-350WAC: –56 V@6.25 A

PWR-C1-1100WAC: 4263 BTUs per hour, 1250 W PWR-C1-715WAC: 2742 BTUs per hour, 804 W PWR-C1-350WAC: 1357 BTUs per hour, 398 W

PWR-C1-1100WAC: 3751 BTUs per hour, 1100 W PWR-C1-715WAC: 2438 BTUs per hour, 765 W PWR-C1-350WAC: 1194 BTUs per hour, 350 W

–48 VDC (nominal), –72 VDC (maximum)

–60 VDC (nominal), –72 VDC (maximum)

PWR-C1-440WDC 1841 BTUs per hour, 540 W

PWR-C1-440WDC: 1502 BTUs per hour, 440 W

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A-3

Fan Module Specifications

Table A-5 Fan Module Environmental and Physical Specifications

Environmental Ranges

Operating temperature 23 to 176° F (–5 to 80° C)

Storage temperature –40 to 185° F (–40 to 85° C)

Relative humidity 5 to 95% (non-condensing)

Altitude Up to 13,000 ft (4,000 m)

Physical Specification

Dimensions (H x D x W) 1.62 x 1.73 x 4.24 in. (4.11 x 4.39 x 10.76 cm)

Weight 0.2 lb (0.07 kg)

Operating Specification

Airflow 20 cfm

Appendix A Technical Specifications

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2 3145678Pin Label

TP0+

TP0-

TP1+

TP2+

TP2-

TP1-

TP3+

TP3-

Connector and Cable Specifications

This chapter describes the connector and cable specifications.

• Connector Specifications, page B-1l

• Cable and Adapter Specifications, page B-5

Connector Specifications

• 10/100/1000 Ports, page B-1

• 10-Gigabit Ethernet CX1 (SFP+ Copper) Connectors, page B-2

• SFP and SFP+ Modules, page B-2

• 10/100/1000 Ethernet Management Port, page B-3

• Console Port, page B-4

APPENDIX

10/100/1000 Ports

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The 10/100/1000 Ethernet ports on switches use RJ-45 connectors and Ethernet pinouts.

Figure B-1 10/100/1000 Port Pinouts

Catalyst 3850 Switch Hardware Installation Guide

B-1

Connector Specifications

278541

58476

10-Gigabit Ethernet CX1 (SFP+ Copper) Connectors

The 10-Gigabit Ethernet electrical modules use CX1 copper connectors similar to the one shown in

Figure B-2.

Note When ordering or using CX1 cables, ensure that the version identifier is 2 or higher.

The 10-Gigabit Ethernet optical modules use the connectors shown in Figure B-3 and Figure B-4.

Figure B-2 10-Gigabit Ethernet CX1 Copper Connector (example)

Appendix B Connector and Cable Specifications

SFP and SFP+ Modules

Figure B-3, Figure B-4, and Figure B-5 show the SFP module connectors.

The switch supports the SFP module patch cable, a 0.5-meter, copper, passive cable with SFP module connectors at each end (Figure B-6). This cable can be used (only with 1-Gigabit Ethernet SFP ports) to connect two Catalyst 3850 switches in a cascaded configuration.

Figure B-3 Duplex LC Cable Connector

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Appendix B Connector and Cable Specifications

57834

60915

2 3145678Pin Label

TP0+

TP0-

TP1+

TP2+

TP2-

TP1-

TP3+

TP3-

126809

Figure B-4 Simplex LC Cable Connector

Figure B-5 Copper SFP Module RJ-45 Connector

Connector Specifications

Figure B-6 SFP Module Patch Cable

10/100/1000 Ethernet Management Port

The 10/100/1000 Ethernet management port uses RJ-45 connectors with Ethernet pinouts. Figure B-7 shows the pinouts.

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B-3

Connector Specifications

H5318

2 3145678Pin Label

RD+

RD-

TD+

TD-

345493

Console Port

Appendix B Connector and Cable Specifications

Figure B-7 10/100 Port Pinouts

The switch has two console ports: a USB 5-pin mini-Type B port on the front panel (see Figure B-8) and an RJ-45 console port on the rear panel.

Figure B-8 USB Mini-Type B Port

345492

The USB console port uses a USB Type A to 5-pin mini-Type B cable, shown in Figure B-9. The USB Type A-to-USB mini-Type B cable is not supplied. You can order an accessory kit (part number 800-33434) that contains this cable.

Figure B-9 USB Type A-to-USB 5-Pin Mini-Type B Cable

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Cisco Systems Ws-C3850-24t-S, C3850NM210G, C3850NM41G User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Catalyst 3850 Switch Hardware Installation Guide

CONTENTS

Preface

Product Overview

Switch Models

Front Panel

10/100/1000 Ethernet Ports

PoE, PoE+, and Cisco UPOE Ports

Management Ports

USB Mini-Type B Port

USB Type A Port

Network Modules

SFP and SFP+ Modules

LEDs

SYST LED

XPS LED

Port LEDs and Modes

USB Console LED

S-PWR LED

ACTV LED

STACK LED

PoE LED

Network Module LEDs

Rear Panel

RJ-45 Console Port LED

StackWise Ports

Power Supply Modules

Fan Modules

StackPower Connector

Management Ports

Ethernet Management Port

Management Options

RJ-45 Console Port

Network Configurations

Switch Installation

Preparing for Installation

Safety Warnings

Installation Guidelines

Planning a Switch Data Stack

Tools and Equipment

Verifying Switch Operation

Powering Off the Switch

Switch Stacking and Power Stacking Guidelines

Data Stack Cabling Configurations

Data Stack Bandwidth and Partitioning Examples

Power-On Sequence for Switch Data Stacks

Planning a StackPower Stack

StackPower Stacking Guidelines

StackPower Cabling Configurations

StackPower Partitioning Examples

Installing the Switch

Rack-Mounting

Attaching the Rack-Mount Brackets

Mounting the Switch in a Rack

Table- or Shelf-Mounting

After Installing the Switch

Connecting to the StackWise Ports

Connecting to the StackPower Ports

Installing a Network Module in the Switch

Installing and Removing SFP and SFP+ Modules

Connecting Devices to the Ethernet Ports

10/100/1000 Ethernet Port Connections

PoE+ and Cisco UPOE Port Connections

Where to Go Next

Overview

Installing a Network Module

Installing a Network Module in the Switch

Network Module LEDs

Safety Warnings

Tools and Equipment

Installing Network Modules

Configuring a Network Module

C3850-NM-4-1G module

C3850-NM-4-10G module

C3850-NM-2-10G module

Supported GBICs