Cisco Catalyst 3850 IP Services operation manual

Catalyst 3850 Switch Hardware Installation Guide

First Published: 2013-01-21

Last Modified: 2015-09-22

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Text Part Number: OL-26779-05

THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS.

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The following information is for FCC compliance of Class A devices: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.

The following information is for FCC compliance of Class B devices: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If the equipment causes interference to radio or television reception, which can be determined by turning the equipment off and on, users are encouraged to try to correct the interference by using one or more of the following measures:

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

•

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•

Consult the dealer or an experienced radio/TV technician for help.

•

Modifications to this product not authorized by Cisco could void the FCC approval and negate your authority to operate the product

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Preface

CHAPTER 1

Preface ix

Document Conventions ix

Preface

Document Conventions, page ix

•

Document Conventions

This document uses the following conventions:

DescriptionConvention

^ or Ctrl

Italic font

...

[x | y]

Both the ^ symbol and Ctrl represent the Control (Ctrl) key on a keyboard. For example, the key combination ^D or Ctrl-D means that you hold down the Control key while you press the D key. (Keys are indicated in capital letters but are not case sensitive.)

Commands and keywords and user-entered text appear in bold font.bold font

Document titles, new or emphasized terms, and arguments for which you supply values are in italic font.

Terminal sessions and information the system displays appear in courier font.Courier font

Bold Courier font indicates text that the user must enter.Bold Courier font

Elements in square brackets are optional.[x]

An ellipsis (three consecutive nonbolded periods without spaces) after a syntax element indicates that the element can be repeated.

A vertical line, called a pipe, indicates a choice within a set of keywords or arguments.

Optional alternative keywords are grouped in brackets and separated by vertical bars.

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Document Conventions

Preface

DescriptionConvention

Note

{x | y}

Required alternative keywords are grouped in braces and separated by vertical bars.

[x {y | z}]

Nested set of square brackets or braces indicate optional or required choices within optional or required elements. Braces and a vertical bar within square brackets indicate a required choice within an optional element.

string

A nonquoted set of characters. Do not use quotation marks around the string or the string will include the quotation marks.

Nonprinting characters such as passwords are in angle brackets.< >

Default responses to system prompts are in square brackets.[ ]

!, #

An exclamation point (!) or a pound sign (#) at the beginning of a line of code indicates a comment line.

Reader Alert Conventions

This document may use the following conventions for reader alerts:

Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.

Tip

Caution

Timesaver

Warning

Means the following information will help you solve a problem.

Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.

Means the described action saves time. You can save time by performing the action described in the paragraph.

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. Statement 1071

SAVE THESE INSTRUCTIONS

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Preface

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS version 2.0.

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Obtaining Documentation and Submitting a Service Request

Preface

Catalyst 3850 Switch Hardware Installation Guide

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CHAPTER 1

Product Overview

The Catalyst 3850 family of 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.

This chapter contains these topics:

Switch Models, page 1

•

Front Panel, page 5

•

Rear Panel, page 23

•

Management Options, page 32

•

Switch Models

Table 1: Catalyst 3850 Switch Models and Descriptions

Switch Model

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Supported Software Image

LAN BaseWS-C3850-24T-L

LAN BaseWS-C3850-48T-L

LAN BaseWS-C3850-24P-L

Description

Stackable 24 10/100/1000 Ethernet ports, 1 network module slot1, 350 W power supply

Stackable 48 10/100/1000 Ethernet ports, 1 network module slot, 350 W power supply

Stackable 24 10/100/1000 PoE+2ports, 1 network module slot, 715 W power supply

Catalyst 3850 Switch Hardware Installation Guide

Switch Models

Product Overview

Switch Model

Supported Software Image

LAN BaseWS-C3850-48P-L

LAN BaseWS-C3850-48F-L

LAN BaseWS-C3850-24U-L

LAN BaseWS-C3850-48U-L

LAN BaseWS-C3850-12X48U-L

LAN BaseWS-C3850-24XU-L

IP BaseWS-C3850-24T-S

Description

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 715 W power supply

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 1100 W power supply

Stackable 24 10/100/1000 Cisco UPOE3ports, 1 network module slot, 1100 W power supply

Stackable 48 10/100/1000 Cisco UPOE ports, 1 network module slot, 1100 W power supply

Stackable 12 100M/1G/2.5G/5G/10G and 36 1G UPoE ports, 1 network module slot, 1100 W power supply

Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network module slot, 1100-W power supply

Stackable 24 10/100/1000 Ethernet ports, 1 network module slot, 350 W power supply

IP BaseWS-C3850-48T-S

Stackable 48 10/100/1000 Ethernet ports, 1 network module slot, 350 W power supply

IP BaseWS-C3850-24P-S

Stackable 24 10/100/1000 PoE+ ports, 1 network module slot, 715 W power supply

IP BaseWS-C3850-48P-S

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 715 W power supply

IP BaseWS-C3850-48F-S

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 1100 W power supply

IP BaseWS-C3850-24U-S

Stackable 24 10/100/1000 Cisco UPOE ports, 1 network module slot, 1100 W power supply

IP BaseWS-C3850-48U-S

Stackable 48 10/100/1000 Cisco UPOE ports, 1 network module slot, 1100 W power supply

IP BaseWS-C3850-24PW-S

Catalyst 3850 24-port PoE IP Base with 5 access points license

IP BaseWS-C3850-48PW-S

Catalyst 3850 48-port PoE IP Base with 5 access points license

IP BaseWS-C3850-12S-S

Stackable 12 SFP module slots, 1 network module slot, 350 W power supply

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Product Overview

Switch Models

Switch Model

Supported Software Image

IP BaseWS-C3850-24S-S

IP BaseWS-C3850-12XS-S

IP BaseWS-C3850-16XS-S

IP BaseWS-C3850-24XS-S

IP BaseWS-C3850-32XS-S

IP BaseWS-C3850-48XS-S

Description

Stackable 24 SFP module slots, 1 network module slot, 350 W power supply

Catalyst 3850 12-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 350 W power supply

Catalyst 3850 16-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 350 W power supply.

16 ports are available when the C3850-NM-4-10G network module is plugged into the WS-C3850-12XS-S switch.

Catalyst 3850 24-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 715 W power supply.

Catalyst 3850 32-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 715 W power supply.

32 ports are available when the C3850-NM-8-10G network module is plugged into the WS-C3850-24XS-S switch.

Catalyst 3850 switch with SFP+ transceivers, 48 ports that support up to 10 G, and 4 QSFP ports that support up to 40 G. 750 W power supply.

The airflow direction for this switch is from the front panel to the rear panel.

IP BaseWS-C3850-48XS-F-S

Catalyst 3850 switch with SFP+ transceivers, 48 ports that support up to 10 G, and 4 QSFP ports that support up to 40 G. 750 W power supply.

The airflow direction for this switch is from the rear panel to the front panel.

IP BaseWS-C3850-12X48U-S

Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports, 1 network module slot, 1100 W power supply

IP BaseWS-C3850-12X48UW-S

Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports, 1 network module slot, 1100 W power supply

IP BaseWS-C3850-24XU-S

Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network module slot, 1100-W power supply

IP BaseWS-C3850-24XUW-S

Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network module slot, 1100-W power supply

IP ServicesWS-C3850-24T-E

Stackable 24 10/100/1000 Ethernet ports, 1 network module slot, 350 W power supply

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Switch Models

Product Overview

Switch Model

Supported Software Image

IP ServicesWS-C3850-48T-E

IP ServicesWS-C3850-24P-E

IP ServicesWS-C3850-48P-E

IP ServicesWS-C3850-48F-E

IP ServicesWS-C3850-24U-E

IP ServicesWS-C3850-48U-E

IP ServicesWS-C3850-12S-E

Description

Stackable 48 10/100/1000 Ethernet ports, 1 network module slot, 350 W power supply

Stackable 24 10/100/1000 PoE+ ports, 1 network module slot, 715 W power supply

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 715 W power supply

Stackable 48 10/100/1000 PoE+ ports, 1 network module slot, 1100 W power supply

Stackable 24 10/100/1000 Cisco UPOE ports, 1 network module slot, 1100 W power supply

Stackable 48 10/100/1000 Cisco UPOE ports, 1 network module slot, 1100 W power supply

Stackable 12 SFP module slots, 1 network module slot, 350 W power supply

IP ServicesWS-C3850-24S-E

Stackable 24 SFP module slots, 1 network module slot, 350 W power supply

IP ServicesWS-C3850-12XS-E

Catalyst 3850 12-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 350 -W power supply.

IP ServicesWS-C3850-16XS-E

Catalyst 3850 16-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 350 W power supply.

16 ports are available when the C3850-NM-4-10G network module is plugged into the WS-C3850-12XS-E switch.

IP ServicesWS-C3850-24XS-E

Catalyst 3850 24-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 715 W power supply.

IP ServicesWS-C3850-32XS-E

Catalyst 3850 32-port SFP+ transceiver, 1 network module slot, support for up to 10 G SFP+, 715 W power supply.

32 ports are available when the C3850-NM-8-10G network module is plugged into the WS-C3850-24XS-E switch.

IP ServicesWS-C3850-48XS-E

Catalyst 3850 switch with SFP+ transceivers, 48 ports that support up to 10 G, and 4 QSFP ports that support up to 40 G. 750 W power supply.

The airflow direction for this switch is from the front panel to the rear panel.

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Product Overview

Front Panel

Switch Model

Supported Software Image

IP ServicesWS-C3850-48XS-F-E

IP ServicesWS-C3850-12X48U-E

IP ServicesWS-C3850-24XU-E

For supported network modules, see Network Modules, on page 10 .

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

UPOE = Universal Power Over Ethernet (provides up to 60 W Cisco UPOE per port)

The WS-C3850-48XS switches do not support StackWise-480

Front Panel

Description

Catalyst 3850 switch with SFP+ transceivers, 48 ports that support up to 10 G, and 4 QSFP ports that support up to 40 G. 750 W power supply.

The airflow direction for this switch is from the rear panel to the front panel.

Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports, 1 network module slot, 1100 W power supply

Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network module slot, 1100-W power supply

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

◦

10 G SFP+

◦

12 or 24 SFP or SFP+ module downlink slots

•

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 the following illustrations for examples.

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Front Panel

Product Overview

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

Figure 1: WS-C3850-48P-L Switch Front Panel

Figure 2: WS-C3850-24S Switch Front Panel

The WS-C3850-12S switches have similar front panels.Note

USB mini-Type B (console) port4Mode button1

10/100/1000 PoE+ ports5Status LEDs2

Network module6USB Type A storage port3

USB Type A storage port5UID button1

SFP module slots (downlink)6Mode button2

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Product Overview

10/100/1000 Ports

Network module7Status LEDs3

USB mini-Type B (console) port4

Figure 3: WS-C3850-24XS-E Switch Front Panel

The WS-C3850-24XS-E switches have the following components.Note

10/100/1000 Ports

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

PoE, PoE+, and Cisco UPoE Ports

The PoE+ and Cisco Universal Power Over Ethernet (Cisco UPoE) ports use the same connectors as described in 10/100/1000 Port Connections, on page 50. 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.

USB mini-Type B (console) port4Mode button1

10 G SFP+ ports5Status LEDs2

Network module6USB Type A storage port3

Support for Cisco-enhanced PoE.

•

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SFP and QSFP Module Slots

•

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

Power Supply Modules, on page 26 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.

Product Overview

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

Note

Restrictions for the WS-C3850-12X48U-L, WS-C3850-12X48U-S and WS-C3850-12X48U-E switch models:

A maximum of 28 ports are available for UPoE connections. This is because some power from the

•

power supplies is diverted to the switch, and only the remaining power is transmitted to the ports.

SFP and QSFP Module Slots

The uplink and downlink ports for the Catalyst WS-C3850 switch models are as follows.

The downlink ports on the Catalyst WS-C3850-12S and WS-C3850-24S switch models support standard

•

SFP modules.

The downlink ports on the Catalyst WS-C3850-12XS and WS-C3850-24XS switch models support

•

standard SFP+ modules.

The 10G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E

•

and WS-C3850-48XS-F-E switch models support standard SFP+ modules.

The 40G downlink ports on the Catalyst WS-C3850-48XS-S, WS-C3850-48XS-F-S, WS-C3850-48XS-E

•

and WS-C3850-48XS-F-E switch models support standard QSFP modules.

For supported 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

Note

For information about the (uplink) SFP module slots on the network modules, see Network Modules, on

page 10.

Management Ports

The management ports connect the switch to a PC running Microsoft Windows or to a terminal server.

Ethernet management port. See Ethernet Management Port, on page 31.

•

RJ-45 console port (EIA/TIA-232). See RJ-45 Console Port, on page 32.

•

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Product Overview

USB Type A Port

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

•

The 10/100/1000 Ethernet management port connection uses a standard RJ-45 crossover or straight-through cable. The RJ-45 console port connection uses the supplied RJ-45-to-DB-9 female cable. 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.

If you use the USB mini-Type B console port, the Cisco Windows USB device driver must be installed on any PC connected to the console port (for operation with Microsoft Windows). Mac OS X or Linux do not require special drivers.

The 4-pin mini-Type B connector resembles the 5-pin mini-Type B connectors. They are not compatible. Use only the 5-pin mini-Type B.

This illustration shows a 5-pin mini-Type B USB port.

Figure 4: USB Mini-Type B Port

With the Cisco Windows USB device driver, you can connect and disconnect the USB cable from the console port without affecting Windows HyperTerminal operations.

The console output always goes to both the RJ-45 and the USB console connectors, but the console input is active on only one of the console connectors at any one time. The USB console takes precedence over the RJ-45 console. When a cable is connected into the USB console port, the RJ-45 console port becomes inactive. Conversely, when the USB cable is disconnected from the USB console port, the RJ-45 port becomes active.

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.

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 software guide.

USB Type A Port

The USB Type A port provides access to external USB flash devices (also known as thumb drives or USB keys) and to specific Cisco USB Bluetooth devices.

The port supports Cisco USB flash drives with capacities from 128 MB to 8 GB (USB devices with port densities of 128 MB, 256 MB, 1 GB, 4 GB, and 8 GB are supported). When combined with stacking, you can upgrade other switches in the stack from an USB key inserted in any switch within the stack. 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.

It provides you with the ability to automatically upgrade the internal flash with the USB drive's configuration and image for emergency switch recovery using USB auto-upgrade. This feature checks the internal flash for a bootable image and configuration and if either image or the configuration is not available, then the USB drive is checked for boot images and configuration. If the boot image and configuration are available, these are copied to flash for the reboot.

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Network Modules

Product Overview

The port supports Cisco USB Bluetooth devices. The USB Bluetooth device acts as a Bluetooth host and serves as either a serial port or a management port connection. You can pair it with your Bluetooth smart phone, laptop, or tablet. If you configure the serial profile on the Bluetooth device, the switch turns the USB port into a serial port. If you configure the Personal Area Network (PAN) profile on the Bluetooth device, the switch turns the USB port into a management interface.

Figure 5: Cisco USB Bluetooth

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.

Table 2: Network Modules

C3850-NM-4-1G

DescriptionNetwork Module

This module has four 1 G 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 G network module, the SFP+ module does not operate, and the switch logs an error message.

Note

This is supported on the following switch models:

WS-C3850-24T/P/U

•

WS-C3850-48T/F/P/U

•

WS-C3850-12X48U

•

WS-C3850-24XU

•

WS-C3850-12S

•

WS-C3850-24S

•

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Product Overview

Network Modules

C3850-NM-2-10G

C3850-NM-4-10G

DescriptionNetwork Module

This module has four slots:

Two slots (left side) support only 1 G SFP modules and two slots (right side) support either 1 G SFP or 10 G SFP modules.

Note

This is supported on the following switch models:

WS-C3850-24T/P/U

•

WS-C3850-48T/F/P/U

•

WS-C3850-12X48U

•

WS-C3850-24XU

•

WS-C3850-12S

•

WS-C3850-24S

•

This module has four 10 G slots or four 1 G slots.

Note

This is supported on the following switch models:

WS-C3850-48T/F/P/U

•

WS-C3850-12X48U

•

C3850-NM-8-10G

C3850-NM-2-40G

WS-C3850-24XU

•

WS-C3850-12XS

•

WS-C3850-24XS

•

This module has eight 10 G slots with an SFP+ port in each slot. Each port supports a 1 G or 10 G connection

Note

This is supported on the following switch models:

WS-C3850-12X48U

•

WS-C3850-24XU

•

WS-C3850-24XS

•

This module has two 40 G slots with a QSFP+ connector in each slot.

Note

This is supported on the following switch models:

WS-C3850-12X48U

•

WS-C3850-24XU

•

WS-C3850-24XS

•

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LEDs

Product Overview

C3850-NM-BLANK

All network modules are hot-swappable.

For information about the network modules, see the Installing Network Modules, on page 59. For cable specifications, see Cables and Adapters, on page 103.

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 (expect in the fixed SFP slots in the WS-C3850-12S and WS-C3850-24S switches) when installed in an SFP module slot. The SFP modules have LC connectors for fiber-optic connections or RJ-45 connectors for copper connections.

Note

The downlink ports on the Catalyst WS-C3850-12S and WS-C3850-24S switch models support standard SFP modules, and the downlink ports on the Catalyst WS-C3850-12XS and WS-C3850-24XS switch models support standard SFP+ modules.

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 documentation at Installing SFP and SFP+ Modules, on page

65.

DescriptionNetwork Module

Insert this blank module when the switch has no uplink ports (this is required for sufficient air flow).

LEDs

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.

For information about QSFP modules, see the documentation at

QSFP Port Cabling Specifications

•

Cisco S-Class 40GBASE QSFP Modules Data Sheet

•

You can use the switch LEDs to monitor switch activity and its performance.

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

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Product Overview

LEDs

This figure shows the switch LEDs and the Mode button that you use to select a port mode.

Figure 6: Switch Front Panel LEDs

XPS = expandable power system.

USB mini-Type B console port LED6STAT (status)1

SYST (system)7DUPLX (duplex)2

ACTV (active)8SPEED3

XPS

9STACK4

S-PWR (StackPower)10PoE

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LEDs

Only on switch models that support PoE.

Figure 7: Switch Front Panel LEDs for the WS-C3850-12S, WS-C3850-24S, WS-C3850-12XS, and WS-C3850-24XS Switches

Product Overview

USB mini-Type B console port LED6UID (blue beacon)1

SYST (system)7STAT (status)2

ACTV (active)8DUPLX (duplex)3

XPS

9SPEED4

S-PWR (StackPower)10STACK5

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Product Overview

XPS = expandable power system.

Figure 8: Switch Front Panel LEDs for the WS-C3850-48XS Switches

LEDs

SYST LED

STACK5UID (blue beacon)1

USB mini-Type B console port LED6STAT (status)2

SYST (system)7DUPLX (duplex)3

ACTV (active)8SPEED4

Table 3: SYST LED

System StatusColor

System is not powered on.Off

System is operating normally.Green

POST in progress.Blinking green

System is receiving power but is not functioning properly.Amber

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LEDs

Product Overview

System StatusColor

XPS LED

Blinking amber

Table 4: XPS LED

Off

Blinking green

There is a fault with one of the following:

Network module (non traffic-related)

•

Power supply

•

Fan module

•

DescriptionColor

XPS cable is not installed.

Switch is in StackPower mode.

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

XPS is connected but is unavailable because it is providing power to another device (redundancy has been allocated to a neighboring device).

Amber

Blinking amber

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

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.

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.

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.

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.

The power supply in a switch has failed, and the XPS is providing power to that switch (redundancy has been allocated to this device).

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Product Overview

LEDs

Table 5: Port Mode LEDs

DescriptionPort ModeMode LED

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

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

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

The active switch status.ActiveACTV

Only switches with PoE+ ports.

Table 6: Meaning of Switch LED Colors in Different Modes

STACK

Stack member status

StackWise port status

Alternating green-amber

Amber

Stack member status.

The StackWise port status. See STACK LED, on page

20.

The PoE+ port status.The PoE+ port status.PoE

MeaningPort LED ColorPort Mode

No link, or port was administratively shut down.OffSTAT (port status)

Link present, no activity.Green

Activity. Port is sending or receiving data.Blinking green

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.

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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LEDs

Product Overview

MeaningPort LED ColorPort Mode

10/100/1000/SFP portsSPEED

Port is operating at 10 Mb/s.Off

Port is operating at 100 Mb/s.Green

Port is operating at 1000 Mb/s.Single green flash (on for

100 ms, off for 1900 ms)

Port is operating at 2500, 5000 or 10000 Mb/sBlinking twice

Network module slots

Port is not operating.Off

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

switch)

member)

OffACTV (data active

Blinking green

Port is operating in half duplex.OffDUPLX (duplex)

Port is operating in full duplex.Green

The switch is not the active switch.

Note

For a standalone switch, this LED is off.

The switch is the active switch.Green

Error during active switch election.Amber

Switch is a standby member of a data stack and assumes active responsibilities if the current active switch fails.

No stack member corresponding to that member number.OffSTACK (stack

Stack member number.Blinking green

Member numbers of other stack member switches.Green

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+ 102 hidden pages

Cisco Catalyst 3850 IP Services operation manual

Catalyst 3850 Switch Hardware Installation Guide

CONTENTS

Preface

Document Conventions

Related Documentation

Obtaining Documentation and Submitting a Service Request

Product Overview

Switch Models

Front Panel

10/100/1000 Ports

PoE, PoE+, and Cisco UPoE Ports

SFP and QSFP Module Slots

Management Ports

USB Type A Port

Network Modules

LEDs

SFP and SFP+ Modules

SYST LED

XPS LED

Port LEDs and Modes