Cisco Catalyst 3850 IP Services operation manual

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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

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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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P r e f a c e

C H A P T E R 1

C O N T E N T S

Preface ix

Document Conventions ix

Preface

• Document Conventions, page ix

• Related Documentation, page xi

• Obtaining Documentation and Submitting a Service Request, page xi

Document Conventions

This document uses the following conventions:

Convention	Description
^ or Ctrl	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.)
bold font	Commands and keywords and user-entered text appear in bold font.
Italic font	Document titles, new or emphasized terms, and arguments for which you supply
	values are in italic font.
Courier font	Terminal sessions and information the system displays appear in courier font.
Bold Courier font	Bold Courier font indicates text that the user must enter.
[x]	Elements in square brackets are optional.
...	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.
[x \| y]	Optional alternative keywords are grouped in brackets and separated by vertical
	bars.

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Document Conventions

Convention	Description
{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:

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

Tip Means the following information will help you solve a problem.

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

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

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. Statement 1071

SAVE THESE INSTRUCTIONS

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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

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C H A P T E R 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.

TheCatalyst3850switchessupportstackingthroughCiscoStackWise-480technologyandpowermanagement 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	Supported	Description
	Software
	Image
WS-C3850-24T-L	LAN Base	Stackable 24 10/100/1000 Ethernet ports, 1 network module
		slot1, 350 W power supply
WS-C3850-48T-L	LAN Base	Stackable 48 10/100/1000 Ethernet ports, 1 network module
		slot, 350 W power supply
WS-C3850-24P-L	LAN Base	Stackable 24 10/100/1000 PoE+2 ports, 1 network module
		slot, 715 W power supply

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Switch Models

Switch Model	Supported	Description
	Software
	Image
WS-C3850-48P-L	LAN Base	Stackable 48 10/100/1000 PoE+ ports, 1 network module
		slot, 715 W power supply
WS-C3850-48F-L	LAN Base	Stackable 48 10/100/1000 PoE+ ports, 1 network module
		slot, 1100 W power supply
WS-C3850-24U-L	LAN Base	Stackable 24 10/100/1000 Cisco UPOE3 ports, 1 network
		module slot, 1100 W power supply
WS-C3850-48U-L	LAN Base	Stackable 48 10/100/1000 Cisco UPOE ports, 1 network
		module slot, 1100 W power supply
WS-C3850-12X48U-L	LAN Base	Stackable 12 100M/1G/2.5G/5G/10G and 36 1G UPoE ports,
		1 network module slot, 1100 W power supply
WS-C3850-24XU-L	LAN Base	Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network
		module slot, 1100-W power supply
WS-C3850-24T-S	IP Base	Stackable 24 10/100/1000 Ethernet ports, 1 network module
		slot, 350 W power supply
WS-C3850-48T-S	IP Base	Stackable 48 10/100/1000 Ethernet ports, 1 network module
		slot, 350 W power supply
WS-C3850-24P-S	IP Base	Stackable 24 10/100/1000 PoE+ ports, 1 network module
		slot, 715 W power supply
WS-C3850-48P-S	IP Base	Stackable 48 10/100/1000 PoE+ ports, 1 network module
		slot, 715 W power supply
WS-C3850-48F-S	IP Base	Stackable 48 10/100/1000 PoE+ ports, 1 network module
		slot, 1100 W power supply
WS-C3850-24U-S	IP Base	Stackable 24 10/100/1000 Cisco UPOE ports, 1 network
		module slot, 1100 W power supply
WS-C3850-48U-S	IP Base	Stackable 48 10/100/1000 Cisco UPOE ports, 1 network
		module slot, 1100 W power supply
WS-C3850-24PW-S	IP Base	Catalyst 3850 24-port PoE IP Base with 5 access points
		license
WS-C3850-48PW-S	IP Base	Catalyst 3850 48-port PoE IP Base with 5 access points
		license
WS-C3850-12S-S	IP Base	Stackable 12 SFP module slots, 1 network module slot, 350
		W power supply

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Switch Models

Switch Model

WS-C3850-24S-S

WS-C3850-12XS-S

WS-C3850-16XS-S

WS-C3850-24XS-S

WS-C3850-32XS-S

WS-C3850-48XS-S

WS-C3850-48XS-F-S

WS-C3850-12X48U-S

WS-C3850-12X48UW-S

WS-C3850-24XU-S

WS-C3850-24XUW-S

WS-C3850-24T-E

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Supported	Description
Software
Image
IP Base	Stackable 24 SFP module slots, 1 network module slot, 350
	W power supply
IP Base	Catalyst 3850 12-port SFP+ transceiver, 1 network module
	slot, support for up to 10 G SFP+, 350 W power supply
IP Base	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.
IP Base	Catalyst 3850 24-port SFP+ transceiver, 1 network module
	slot, support for up to 10 G SFP+, 715 W power supply.
IP Base	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.
IP Base	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.4
	The airflow direction for this switch is from the front panel
	to the rear panel.
IP Base	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 Base	Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports,
	1 network module slot, 1100 W power supply
IP Base	Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports,
	1 network module slot, 1100 W power supply
IP Base	Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network
	module slot, 1100-W power supply
IP Base	Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network
	module slot, 1100-W power supply
IP Services	Stackable 24 10/100/1000 Ethernet ports, 1 network module
	slot, 350 W power supply

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Product Overview

Switch Models

Switch Model

WS-C3850-48T-E

WS-C3850-24P-E

WS-C3850-48P-E

WS-C3850-48F-E

WS-C3850-24U-E

WS-C3850-48U-E

WS-C3850-12S-E

WS-C3850-24S-E

WS-C3850-12XS-E

WS-C3850-16XS-E

WS-C3850-24XS-E

WS-C3850-32XS-E

WS-C3850-48XS-E

Catalyst 3850 Switch Hardware Installation Guide

Supported	Description
Software
Image
IP Services	Stackable 48 10/100/1000 Ethernet ports, 1 network module
	slot, 350 W power supply
IP Services	Stackable 24 10/100/1000 PoE+ ports, 1 network module
	slot, 715 W power supply
IP Services	Stackable 48 10/100/1000 PoE+ ports, 1 network module
	slot, 715 W power supply
IP Services	Stackable 48 10/100/1000 PoE+ ports, 1 network module
	slot, 1100 W power supply
IP Services	Stackable 24 10/100/1000 Cisco UPOE ports, 1 network
	module slot, 1100 W power supply
IP Services	Stackable 48 10/100/1000 Cisco UPOE ports, 1 network
	module slot, 1100 W power supply
IP Services	Stackable 12 SFP module slots, 1 network module slot, 350
	W power supply
IP Services	Stackable 24 SFP module slots, 1 network module slot, 350
	W power supply
IP Services	Catalyst 3850 12-port SFP+ transceiver, 1 network module
	slot, support for up to 10 G SFP+, 350 -W power supply.
IP Services	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 Services	Catalyst 3850 24-port SFP+ transceiver, 1 network module
	slot, support for up to 10 G SFP+, 715 W power supply.
IP Services	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 Services	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	Description
		Software
		Image
	WS-C3850-48XS-F-E	IP Services	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.
	WS-C3850-12X48U-E	IP Services	Stackable 12 100M/1G/2.5G/5G/10G and 36 1 G UPoE ports,
			1 network module slot, 1100 W power supply
	WS-C3850-24XU-E	IP Services	Stackable 24 100M/1G/2.5G/5G/10G UPoE ports, 1 network
			module slot, 1100-W power supply
1	For supported network modules, see Network Modules,	on page 10 .
2	PoE+ = Power over Ethernet plus (provides up to 30 W per port).
3	UPOE = Universal Power Over Ethernet (provides up to 60 W Cisco UPOE per port)
4	The WS-C3850-48XS switches do not support StackWise-480

Front Panel

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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Cisco Catalyst 3850 IP Services operation manual

Product Overview

Front Panel

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

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

1	Mode button	4	USB mini-Type B (console) port
2	Status LEDs	5	10/100/1000 PoE+ ports
3	USB Type A storage port	6	Network module

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

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

1	UID button	5	USB Type A storage port
2	Mode button	6	SFP module slots (downlink)

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10/100/1000 Ports

3 Status LEDs

7 Network module

4USB mini-Type B (console) port

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

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

1	Mode button	4	USB mini-Type B (console) port
2	Status LEDs	5	10 G SFP+ ports
3	USB Type A storage port	6	Network module

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.

•Support for Cisco-enhanced PoE.

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SFP and QSFP Module Slots

•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.

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.

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.

•The10GdownlinkportsontheCatalystWS-C3850-48XS-S,WS-C3850-48XS-F-S,WS-C3850-48XS-E and WS-C3850-48XS-F-E switch models support standard SFP+ modules.

•The40GdownlinkportsontheCatalystWS-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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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

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
Network Module5	Description
C3850-NM-4-1G	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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Network Modules

Network Module5	Description
C3850-NM-2-10G	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
C3850-NM-4-10G	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
	• WS-C3850-24XU
	• WS-C3850-12XS
	• WS-C3850-24XS
C3850-NM-8-10G	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

C3850-NM-2-40G 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

Network Module5	Description
C3850-NM-BLANK	Insert this blank module when the switch has no uplink ports (this is required
	for sufficient air flow).

5 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.

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

LEDs

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

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

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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

1	STAT (status)	6	USB mini-Type B console port LED
2	DUPLX (duplex)	7	SYST (system)
3	SPEED	8	ACTV (active)
4	STACK	9	XPS 6
5	PoE 7	10	S-PWR (StackPower)

6 XPS = expandable power system.

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7 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

1	UID (blue beacon)	6	USB mini-Type B console port LED
2	STAT (status)	7	SYST (system)
3	DUPLX (duplex)	8	ACTV (active)
4	SPEED	9	XPS 8
5	STACK	10	S-PWR (StackPower)

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8 XPS = expandable power system.

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

1	UID (blue beacon)	5	STACK
2	STAT (status)	6	USB mini-Type B console port LED
3	DUPLX (duplex)	7	SYST (system)
4	SPEED	8	ACTV (active)

SYST LED

Table 3: SYST LED
Color	System Status
Off	System is not powered on.
Green	System is operating normally.
Blinking green	POST in progress.
Amber	System is receiving power but is not functioning properly.

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Color	System Status
Blinking amber	There is a fault with one of the following:
	• Network module (non traffic-related)
	• Power supply
	• Fan module

XPS LED

Table 4: XPS LED
Color	Description
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

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.

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Table 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	Stack member status.
	StackWise port status	The StackWise port status. See STACK LED, on page
		20.
PoE9	The PoE+ port status.	The PoE+ port status.

9 Only switches with PoE+ ports.

Table 6: Meaning of Switch LED Colors in Different Modes

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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Port Mode	Port LED Color	Meaning
SPEED	10/100/1000/SFP ports
	Off	Port is operating at 10 Mb/s.
	Green	Port is operating at 100 Mb/s.
	Single green flash (on for	Port is operating at 1000 Mb/s.
	100 ms, off for 1900 ms)
	Blinking twice	Port is operating at 2500, 5000 or 10000 Mb/s

	Network module slots
	Off	Port is not operating.
	Blinking green	Port is operating at up to 10 Gb/s.
DUPLX (duplex)	Off	Port is operating in half duplex.
	Green	Port is operating in full duplex.
ACTV (data active	Off	The switch is not the active switch.
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.
STACK (stack	Off	No stack member corresponding to that member number.
member)	Blinking green	Stack member number.
	Blinking green	Stack member number.
	Green	Member numbers of other stack member switches.

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+ 102 hidden pages

Configuring the Switch with the CLI-Based Setup Program 109
Accessing the CLI Through Express Setup 109
Accessing the CLI Through the Console Port 109
Connecting the RJ-45 Console Port	110
Connecting the USB Console Port	110
Installing the Cisco Microsoft Windows USB Device Driver		114
Installing the Cisco Microsoft Windows XP USB Driver		114