Catalyst 3750-X and 3560-X Hardware Installation Guide
Product Overview
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Product Overview

Table Of Contents

Product Overview

Switch Models

Front Panel Description

SFP Module Slots

10/100/1000 Ethernet Ports

PoE+ and UPOE Ports

Network Modules

SFP and SFP+ Modules

LEDs

System LED

XPS LED

Port LEDs and Modes

USB Console LED

S-PWR LED (Catalyst 3750-X)

Master LED (Catalyst 3750-X)

Stack LED (Catalyst 3750-X)

PoE LED

Network Module LEDs

USB Mini-Type B Port

Rear Panel Description

RJ-45 Console Port LED

USB Type A Interface

StackWise Ports

Power Supply Modules

Fan Modules

XPS Connector

StackPower Connector (Catalyst 3750-X Switches)

Management Ports

Ethernet Management Port

USB Mini-Type B Port

Management Options

Network Configurations


Product Overview


The Catalyst 3750-X and 3560-X 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 3750-X switches support stacking through Cisco StackWise technology and power management through Cisco StackPower technology. The Catalyst 3560-X switches do not support switch stacking or StackPower.

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

Switch Models

Front Panel Description

Rear Panel Description

Management Options

Switch Models

Table 1-1 Catalyst 3750-X Switch Models 

Switch Model
Cisco IOS Image
Description

Catalyst 3750-X-24T-L

LAN Base image

24 10/100/1000 Ethernet ports, StackWise Plus, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-48T-L

LAN Base image

48 10/100/1000 Ethernet ports, StackWise Plus, one network module1 slot, 350-W power supply

Catalyst 3750-X-24P-L

LAN Base image

24 10/100/1000 PoE+2 ports, StackWise Plus, 1 network module1 slot, 715-W power supply

Catalyst 3750-X-48P-L

LAN Base image

48 10/100/1000 PoE+2 ports, StackWise Plus, one network module1 slot, 715-W power supply

Catalyst 3750-X-48PF-L

LAN Base image

48 10/100/1000 PoE+2 ports, StackWise Plus, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-24U-L3

LAN Base image

24 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-48U-L3

LAN Base image

48 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-24T-S

IP Base image

24 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-48T-S

IP Base image

48 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-24P-S

IP Base image

24 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 715-W power supply

Catalyst 3750-X-48P-S

IP Base image

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 715-W power supply

Catalyst 3750-X-48PF-S

IP Base image

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-24U-S3

IP Base image

24 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-48U-S3

IP Base image

48 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-12S-S

IP Base image

12 SFP module slots, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-24S-S

IP Base image

24 SFP module slots, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-24T-E

IP Services image

24 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-48T-E

IP Services image

48 10/100/1000 Ethernet ports, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-24P-E

IP Services image

24 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 715-W power supply

Catalyst 3750-X-48P-E

IP Services image

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 715-W power supply

Catalyst 3750-X-48PF-E

IP Services image

48 10/100/1000 PoE+2 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-24U-E3

IP Services image

24 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-48U-E3

IP Services image

48 10/100/1000 UPOE4 ports, StackWise Plus, StackPower, 1 network module1 slot, 1100-W power supply

Catalyst 3750-X-12S-E

IP Services image

12 SFP module slots, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

Catalyst 3750-X-24S-E

IP Services image

24 SFP module slots, StackWise Plus, StackPower, 1 network module1 slot, 350-W power supply

1 Available network modules: 10-Gigabit Ethernet network module; 10-Gigabit Ethernet (copper) network module; 10-Gigabit Ethernet service module; 1-Gigabit Ethernet network module; blank module (see Table 1-3).

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

3 Not supported for NEBS.

4 UPOE = Universal Power over Ethernet (provides up to 60 W per port).


Table 1-2 Catalyst 3560-X Switch Models 

Switch
Part Number
Description

Catalyst 3560-X-24T-L

LAN Base image

24 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-48T-L

LAN Base image

48 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-24P-L

LAN Base image

24 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48P-L

LAN Base image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48PF-L

LAN Base image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-24U-L3

LAN Base image

24 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-48U-L3

LAN Base image

48 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-24T-S

IP Base image

24 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-48T-S

IP Base image

48 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-24P-S

IP Base image

24 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48P-S

IP Base image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48PF-S

IP Base image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-24U-S3

IP Base image

24 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-48U-S3

IP Base image

48 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-24T-E

IP Services image

24 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-48T-E

IP Services image

48 10/100/1000 Ethernet ports, 1 network module1 slot, 350-W power supply

Catalyst 3560-X-24P-E

IP Services image

24 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48P-E

IP Services image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 715-W power supply

Catalyst 3560-X-48PF-E

IP Services image

48 10/100/1000 PoE+2 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-24U-E3

IP Services image

24 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

Catalyst 3560-X-48U-E3

IP Services image

48 10/100/1000 UPOE4 ports, 1 network module1 slot, 1100-W power supply

1 Available network modules: 10-Gigabit Ethernet network module; 10-Gigabit Ethernet (copper) network module; 10-Gigabit Ethernet service module; 1-Gigabit Ethernet network module; blank module (see Table 1-3).

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

3 Not supported for NEBS.

4 UPOE = Universal Power over Ethernet (provides up to 60 W per port).


Front Panel Description

The switch front panel includes the Mode button, a USB 5-pin mini-Type B console port, the downlink ports and LEDs, the network module, and the switch LEDs.

Figure 1-1 shows the Catalyst 3750-X-24S switch as an example.

Figure 1-1 Catalyst 3750-X-24S Switch Front Panel

1

Mode button

4

SFP module slots (downlink)

2

USB Type-B console port

5

Network Module

3

Status LEDs

   

Figure 1-2 shows the Catalyst 3750-X-48P switch as an example.

Figure 1-2 Catalyst 3750-X-48P Switch Front Panel

1

Mode button

4

10/100/1000 ports

2

USB Type-B console port

5

Network Module

3

Status LEDs

   

SFP Module Slots

The switch (downlink) SFP module slots on the Catalyst 3750-X-12S and Catalyst 3750-X-24S switch support any combination of standard SFP modules. SFP+ modules are not supported.


Note For information about about the (uplink) SFP and SFP+ module slots on the network modules, see the "Network Modules" section.


See Table 1-4 for a list of supported SFP modules.

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 and "Connector and Cable Specifications."

PoE+ and UPOE Ports

The PoE+ and UPOE ports use the same connectors as described in the "10/100/1000 Ethernet Ports" section and provide this support.

Support for prestandard Cisco powered devices

Support for IEEE 802.3af compliant powered devices (up to 15.4 W)

Support for IEEE 802.3at compliant powered devices (up to 30 W)

Support for Cisco UPOE (up to 60 W) —UPOE switches only

Support for Cisco enhanced PoE

Configuration for StackPower PoE+ and UPOE. 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 (only Catalyst 3750-X switches)

Configurable support for Cisco intelligent power management, including enhanced power negotiation, power reservation, and per-port power policing

See Table 1-18 for the power supply matrix that defines the available PoE, PoE+, and UPOE power per port.


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


For information about power supply modules, PoE+ port connections, and PoE+ specifications, see the "Power Supply Modules" section, the "PoE+ and UPOE Port Connections" section, and "Connector and Cable Specifications."

Network Modules

The switch supports one hot-swappable network module that provides uplink ports to connect to other devices. You must insert the network module during switch operation. Operating the switch without a network module is not supported. A blank module is available.

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

Table 1-3 Network Modules 

Network Module 1
Description

10-Gigabit Ethernet
C3KX-NM-10G

This module has four slots. Two slots support only 1-Gigabit SFP modules, two slots support either 1-Gigabit SFP or 10-Gigabit SFP+ modules.

Note The GLC-T SFP is not supported on the SFP+ slots of C3KX-NM-10G.

The four slots are grouped as two pairs with each pair consisting of one SFP slot and one SFP+ slot. Each pair supports either two 1-Gigabit SFP modules or one 10-Gigabit SFP+ module. A 10-Gigabit SFP+ module cannot operate at the same time as the corresponding 1-Gigabit SFP module in the pair.

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 2 populated with one 10-Gigabit SFP+ module and Slots 3 and 4 populated with 1-Gigabit SFP modules.

Slot 2 and Slot 4 each populated with 10-Gigabit SFP+ modules.

A 10-Gigabit SFP+ module takes precedence over a 1-Gigabit SFP module except when an SFP module is first inserted in Slot 1 and has link. When you insert an SFP+ module in Slot 2, the SFP in Slot 1 retains link. The SFP+ module in Slot 2 does not operate.

When the SFP module in Slot 1 is shutdown, loses link, or is removed, the SFP+ module in Slot 2 becomes operational. At this point, the SFP module in Slot 1 will not become operational under any circumstance for as long as an SFP+ module remains in Slot 2 whether it is link up or not.

The same precedence applies to Slots 3 and 4.

10-Gigabit Ethernet
C3KX-NM-10GT

This module has two autonegotiating 10-Gigabit Ethernet (copper) ports.

10-Gigabit Ethernet Service Module
C3KX-SM-10G

This module has two slots that support either 1-Gigabit SFP or 10-Gigabit SFP+ modules. The service module supports Net Flow and MACSec Uplink Encryption (switch- to-switch encryption between uplinks).

1-Gigabit Ethernet
C3KX-NM-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.

Blank
C3KX-NM_BLNK

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. For cable specifications, see "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, providing 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 modules on the switch.


Note The (downlink) SFP module slots on the Catalyst 3750-X-12S and Catalyst 3750-X-24S switch front panel support any combination of standard SFP modules. SFP+ modules are not supported.


Table 1-4 Supported Cisco SFP Modules 

Part Number
Description

GLC-GE-100FX=1 ,2 ,3

100FX SFP on GE SFP ports for LAN switches

GLC-LH-SM=

GE SFP, LC connector LX/LH transceiver

GLC-LH-SMD=

GE SFP, LC connector LX/LH transceiver, extended operating temperature range

GLC-SX-MM=

GE SFP, LC connector SX transceiver

GLC-SX-MMD=

GE SFP, LC connector SX transceiver, extended operating temperature range

GLC-T=1, 3

1000BASE-T SFP transceiver module for copper connections

GLC-ZX-SM=

1000BASE-ZX SFP module for SMF, 1550 nm

GLC-BX-D=1

1000BASE-BX10 SFP module for single-strand SMF, 1490-nm TX, 1310-nm RX wavelength

GLC-BX-U=1

1000BASE-BX10 SFP module for single-strand SMF, 1310-nm TX, 1490-nm RX wavelength

CWDM-SFP-1470=

CWDM 1470-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1490=

CWDM 1490-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1510=

CWDM 1510-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1530=

CWDM 1530-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1550=

CWDM 1550-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1570=

CWDM 1570-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1590=

CWDM 1590-nm SFP Gigabit Ethernet and 1G/2G FC

CWDM-SFP-1610=

CWDM 1610-nm SFP Gigabit Ethernet and 1G/2G FC

SFP-GE-S=

1000BASE-SX SFP module for MMF, 850 nm (DOM)4

SFP-GE-L=

1000BASE-LX/LH SFP module for SMF, 1300 nm (DOM)4

DWDM-SFP-3033=

DWDM SFP 1530.33-nm SFP (100 GHz ITU grid)

DWDM-SFP-3112=

DWDM SFP 1531.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-3190=

DWDM SFP 1531.90-nm SFP (100 GHz ITU grid)

DWDM-SFP-3268=

DWDM SFP 1532.68-nm SFP (100 GHz ITU grid)

DWDM-SFP-3346=

DWDM SFP 1533.47-nm SFP (100 GHz ITU grid)

DWDM-SFP-3425=

DWDM SFP 1534.25-nm SFP (100 GHz ITU grid)

DWDM-SFP-3504=

DWDM SFP 1535.04-nm SFP (100 GHz ITU grid)

DWDM-SFP-3582=

DWDM SFP 1535.82-nm SFP (100 GHz ITU grid)

DWDM-SFP-3661=

DWDM SFP 1536.61-nm SFP (100 GHz ITU grid)

DWDM-SFP-3739=

DWDM SFP 1537.40-nm SFP (100 GHz ITU grid)

DWDM-SFP-3819=

DWDM SFP 1538.19-nm SFP (100 GHz ITU grid)

DWDM-SFP-3898=

DWDM SFP 1538.98-nm SFP (100 GHz ITU grid)

DWDM-SFP-3977=

DWDM SFP 1539.77-nm SFP (100 GHz ITU grid)

DWDM-SFP-4056=

DWDM SFP 1540.56-nm SFP (100 GHz ITU grid)

DWDM-SFP-4134=

DWDM SFP 1541.35-nm SFP (100 GHz ITU grid)

DWDM-SFP-4214=

DWDM SFP 1542.14-nm SFP (100 GHz ITU grid)

DWDM-SFP-4294=

DWDM SFP 1542.94-nm SFP (100 GHz ITU grid)

DWDM-SFP-4373=

DWDM SFP 1543.73-nm SFP (100 GHz ITU grid)

DWDM-SFP-4453=

DWDM SFP 1544.53-nm SFP (100 GHz ITU grid)

DWDM-SFP-4532=

DWDM SFP 1545.32-nm SFP (100 GHz ITU grid)

DWDM-SFP-4612=

DWDM SFP 1546.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-4692=

DWDM SFP 1546.92-nm SFP (100 GHz ITU grid)

DWDM-SFP-4772=

DWDM SFP 1547.72-nm SFP (100 GHz ITU grid)

DWDM-SFP-4851=

DWDM SFP 1548.51-nm SFP (100 GHz ITU grid)

DWDM-SFP-4931=

DWDM SFP 1549.32-nm SFP (100 GHz ITU grid)

DWDM-SFP-5012=

DWDM SFP 1550.12-nm SFP (100 GHz ITU grid)

DWDM-SFP-5092=

DWDM SFP 1550.92-nm SFP (100 GHz ITU grid)

DWDM-SFP-5172=

DWDM SFP 1551.72-nm SFP (100 GHz ITU grid)

DWDM-SFP-5252=

DWDM SFP 1552.52-nm SFP (100 GHz ITU grid)

DWDM-SFP-5332=

DWDM SFP 1553.33-nm SFP (100 GHz ITU grid)

DWDM-SFP-5413=

DWDM SFP 1554.13-nm SFP (100 GHz ITU grid)

DWDM-SFP-5494=

DWDM SFP 1554.94-nm SFP (100 GHz ITU grid)

DWDM-SFP-5575=

DWDM SFP 1555.75-nm SFP (100 GHz ITU grid)

DWDM-SFP-5655=

DWDM SFP 1556.55-nm SFP (100 GHz ITU grid)

DWDM-SFP-5736=

DWDM SFP 1557.36-nm SFP (100 GHz ITU grid)

DWDM-SFP-5817=

DWDM SFP 1558.17-nm SFP (100 GHz ITU grid)

DWDM-SFP-5898=

DWDM SFP 1558.98-nm SFP (100 GHz ITU grid)

DWDM-SFP-5979=

DWDM SFP 1559.79-nm SFP (100 GHz ITU grid)

DWDM-SFP-6061=

DWDM SFP 1560.61-nm SFP (100 GHz ITU grid)

DWDM-SFP-6141=

DWDM SFP 1561.42-nm SFP (100 GHz ITU grid)

1 Not supported in the SFP+ slots (2 and 4) on the C3KX-NM-10G.

2 Not supported on the C3KX-SM-10G

3 Not supported for NEBS.

4 DOM = digital optical monitoring.


Table 1-5 Supported Cisco SFP+ Modules

Part Number
Description

SFP-10G-LR=

10 GBASE LR SFP+ transceiver module for SMF, 1350 nm, LC duplex connector

SFP-10G-SR=

10 GBASE SR SFP+ transceiver module for MMF, 850 nm, LC duplex connector

SFP-10G-LRM=

10 GBASE-LRM SFP+ module for MMF and SMF, 1310 nm

SFP-H10GB-CU1M=

10 GBASE-CU Twinax SFP+ cable assembly, 1 meter (Version -02)

SFP-H10GB-CU3M=

10 GBASE-CU Twinax SFP+ cable assembly, 3 meters (Version -02)

SFP-H10GB-CU5M=

10 GBASE-CU Twinax SFP+ cable assembly, 5 meters (Version -02)


For information about SFP modules, see your SFP module documentation and the "Installing SFP and SFP+ Modules" section. For cable specifications, see "Connector and Cable Specifications."

The Catalyst 3560-X 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 3560-X switches in a cascaded configuration.

LEDs

You can use the switch LEDs to monitor switch activity and its performance. Figure 1-3 shows the Catalyst 3750-X switch LEDs and the Mode button that you use to select a port mode.

Figure 1-3 Switch Front Panel LEDs

1

System LED

6

USB console port LED

2

XPS1 LED

7

S-PWR (StackPower) LED2

3

Status LED

8

Master LED2

4

Speed LED

9

Stack LED2

5

Duplex LED

10

PoE LED3

1 XPS = Expandable power system.

2 Only Catalyst 3750-X switches.

3 Only switches with PoE+ or UPOE ports.


System LED

Table 1-6 System LED 

Color
System Status

Off

System is not powered on.

Green

System is operating normally.

Blinking Green

Switch is running power on self-test (POST).

Amber

System is receiving power but is not functioning properly.


For information on the System LED colors during power-on self-test (POST), see the "Diagnosing Problems" section.

XPS LED

Table 1-7 XPS LED 

Color
XPS Status

Off

XPS cable is not installed.
Switch is in StackPower mode (Catalyst 3750-X).

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.

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. Table 1-8 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. Table 1-9 explains how to interpret the port LED colors in different port modes.

When you press the Mode button on any switch in the Catalyst 3750-X switch stack, all the stack switches change to show the same selected mode. For example, if you press the Mode button on the stack master to show the SPEED LED, all the other switches in the stack also show the SPEED LED.

Table 1-8 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.

MAST1

Master

The stack master status.

STACK1

Stack member status

StackWise port status

The stack member status.

The StackWise port status. See the "Stack LED (Catalyst 3750-X)" section.

PoE2

PoE+ or UPOE port power

The PoE+ or UPOE port status.

1 Only Catalyst 3750-X switches.

2 Only switches with PoE+ or UPOE ports.


 

Table 1-9 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.

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 100 ms, off for 1900 ms)

Port is operating at 1000 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.

MAST1
(data stack master)

Off

The switch is not the stack master.

Note For a standalone switch, this LED is off.

Green

The switch is the stack master.

Amber

Error during stack master election.

STACK1
(stack member)

Off

No stack member corresponding to that member number.

Blinking green

Stack member number.

Green

Member numbers of other stack member switches.

PoE2

Off

PoE+ or UPOE 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+ or UPOE is on. The port LED is green when the switch port is providing power.

Alternating green and amber

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

Blinking amber

PoE+ or UPOE is off due to a fault or because it has exceeded a limit set in the switch software.


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

Amber

PoE+ or UPOE for the port has been disabled.

Note PoE+ or UPOE is enabled by default.

1 Only Catalyst 3750-X switches.

2 Only switches with PoE+ or UPOE ports.


USB Console LED

The USB console LED shows whether there is an active USB connection to the port.

Table 1-10 USB Console Port LED

Color
Description

Off

USB console is disabled.

Green

USB console is enabled.


S-PWR LED (Catalyst 3750-X)

Table 1-11 S-PWR LED

Color
Description

Off

StackPower cable is not connected, or the switch is in standalone mode.

Green

An XPS cable is connected to the XPS 2200.
Each StackPower port is connected to another switch or to an XPS 2200 (Catalyst 3750-X switches).

Blinking Green

This appears on the switch in a StackPower ring configuration that detects an open ring or has only one StackPower cable connected, and no connection to an XPS 2200.

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.


Master LED (Catalyst 3750-X)

Table 1-12 Master LED 

Color
Description

Off

Switch is not the stack master.

Green

Switch is the stack master or a standalone switch.

Amber

An error occurred when the switch was selecting the stack master switch, or another type of stack error occurred.


Stack LED (Catalyst 3750-X)

The stack LED shows the sequence of member switches in a stack. Up to nine switches can be members of a stack. The first nine port LEDs show the member number of a switch in a stack. Figure 1-4 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.

Figure 1-4 Stack LED

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.

PoE LED

If the PoE LED mode is not selected on a switch with PoE+ or UPOE ports, the PoE LED still shows detected PoE+ or UPOE problems.

Table 1-13 PoE Mode LED 

Color
PoE+/UPOE Status

Off

PoE+ or UPOE mode is not selected. None of the 10/100/1000 ports have been denied power or are in a fault condition.

Green

PoE+ or UPOE mode is selected, and the port LEDs show the PoE+ or UPOE status.

Blinking amber

PoE+ or UPOE 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+ or UPOE fault.


Network Module LEDs

Figure 1-5 Network Module LEDs (10-Gigabit Network Module Shown)

1

G1 LED

3

G3 LED

2

G2/TE1 LED

4

G4/TE2 LED


Table 1-14 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.

Blinking amber

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


Caution Link faults are caused 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.


USB Mini-Type B Port

A USB 5-pin mini-Type B connector on the front panel is available for switch management (Figure 1-6).

Figure 1-6 USB Mini-Type B Console Port

See the "Management Ports" section for details.

Rear Panel Description

The switch rear panel has a ground connector, an RJ-45 console port, an RJ-45 10/100 management port, a USB Type A connector, two StackWise connectors (only Catalyst 3750-X switches), two fan modules, an XPS 2200 connector, a StackPower connector (only Catalyst 3750-X switches), and two power supply module slots. See Figure 1-7, and the descriptions on the following pages. Figure 1-7 shows the Catalyst 3750-X-48 PoE+ switch, which has one connector for either a StackPower or an XPS connection, and one connector only for StackPower. Figure 1-8 shows the Catalyst 3560-X switch rear panel, which has one connector for XPS and no StackPower connector.

Figure 1-7 Catalyst 3750-X Switch Rear Panel

1

Ground connector

8

Fan modules

2

RJ-45 console port LED

9

StackPower or XPS 2200 connector

3

RJ-45 console port

10

StackPower connector

4

RJ-45 10/100 management port

11

Power supply modules (AC power supply modules shown)

5

USB Type A connector

12

AC power (input) status LED

6

Stack cable connectors

13

Power supply (output) status LED

7

Reset button

   

Figure 1-8 Catalyst 3560-X Switch Rear Panel

1

Ground connector

7

Fan modules

2

RJ-45 console port LED

8

XPS 2200 connector

3

RJ-45 console port

9

Power supply module slot (blank module shown)

4

RJ-45 10/100 management port

10

Power supply module (AC power supply module shown)

5

USB Type A connector

11

AC power (input) status LED

6

Reset button

12

Power supply (output) status LED


RJ-45 Console Port LED

Table 1-15 RJ-45 Console Port LED 

Color
RJ-45 Console Port Status

Off

RS-232 console is disabled.

Green

RS-232 console is enabled.


USB Type A Interface

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

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 formatting of the flash device with a FAT file system. You can boot the switch from a USB drive.

For information about the switch management ports, see the switch software configuration guide and the command reference on Cisco.com and the "Connector and Cable Specifications" section.

StackWise Ports

The Catalyst 3750-X switch ships with a 0.5-meter StackWise cable (CAB-STACK-50CM) that you can use to connect the StackWise ports.


Caution Use only approved cables (CAB-STACK-50CM, CAB-STACK-1M, CAB-STACK-3M, CAB-STACK-50CM-NH,CAB-STACK-1M-NH, or CAB-STACK-3M-NH), and connect only to similar Cisco equipment. Equipment might be damaged if connected to nonapproved Cisco cables or equipment.

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

CAB-STACK-50CM (0.5-meter cable)

CAB-STACK-1M= (1-meter cable)

CAB-STACK-3M= (3-meter cable)

CAB-STACK-50CM-NH= (0.5-meter cable, nonhalogen)

CAB-STACK-1M-NH= (1-meter cable, nonhalogen)

CAB-STACK-3M-NH= (3-meter cable, nonhalogen)

Power Supply Modules

The switch is powered through one or two internal power supply modules.

Supported power supply modules:

Description
Model

350 W AC

PWR-C1-350WAC1
C3KX-PWR-350WAC

715 W AC

PWR-C1-715WAC1
C3KX-PWR-715WAC

1100 W AC

PWR-C1-1100WAC1
C3KX-PWR-1100WAC

440 W DC

PWR-C1-440WDC1
C3KX-PWR-440WDC

1 These power supplies have an extended tab at the connector end that is designed to protect the system and the power supply from damage if the power supply is installed incorrectly. Otherwise, these power supplies are functionally compatible with the C3KX-PWR power supplies.


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 an XPS 2200. A Catalyst 3750-X switch that is in a StackPower stack can operate with power supplied by other switches in the stack.

Table 1-1 and Table 1-2 show the 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 or 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.

The XPS 2200 powers connected switches when the power supply is removed or fails. When a new switch power supply is installed, the switch software polls the device. The switch power supply again provides power, and the XPS 2200 is available to power other devices.

Table 1-16 and Table 1-17 show the power supply modules available for Catalyst 3750-X and 3560-X switches and power supply configurations based on switch models.

Table 1-16 Available PoE with AC Power Supply 

Switch Models
Default Power Supply
Available PoE Power

12- and 24-port data (SFP)

PWR-C1-350WAC
C3KX-PWR-350WAC

-

24-port data

48-port data

24-port PoE+

PWR-C1-715WAC
C3KX-PWR-715WAC

495

48-port PoE+

462

48-port full PoE+

PWR-C1-1100WAC 1
C3KX-PWR-1100WAC1

847

24-port UPOE

870

48-port UPOE

840

1 Japan only: To satisfy regulatory requirements, you must use the CAB-3KX-250VAC-JP power cord with the 1100-W power supply module.


Table 1-17 Available PoE with DC Power Supply 

Switch Models
Power Supply
Available PoE Power

24-port PoE+

1

220 W

2

660 W

48-port PoE+

1

187 W

2

627 W

24-port UPOE

1

210 W

2

650 W

48-port UPOE

1

180 W

2

620 W


Table 1-18 Switch Power Supply Requirements for PoE, PoE+, and UPOE

PoE Option
24-Port Switch
48-Port Switch

PoE (up to 15.4 W per port)

(1) 715-W power supply

(2) 440-W DC power supplies

(1) 1100-W power supply

PoE+ (up to 30 W per port)

(1) 1100-W power supply

(1) 1100-W power supply plus
(1) 715-W power supply

or

(2) 1100-W power supplies

UPOE (up to 60 W per port)

(1) 1100-W power supply plus
(1) 715-W power supply

or

(2) 1100-W power supplies

(2) 1100-W power supplies (maximum of 30 ports)



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


The power supply modules have two status LEDs.

Table 1-19 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 outside operating range (AC LED is off).

Green

AC input power present.

Green

Power output to switch active.

   

Red

Output has failed.

DC-Power Supply Module LEDs
DC OK
Description
PS OK
Description

Off

No DC input power.

Off

Output is disabled, or input is outside operating range (DC LED is off).

Green

DC input power present.

Green

Power output to switch active.

   

Red

Output has failed.


For information about replacing a power supply module, wiring a DC power supply module, and module specifications, see Chapter 3 "Power Supply and Fan Module Installation," and "Technical Specifications."

Fan Modules

The switch has two internal hot-swappable 12-V fan modules, each with two fans. 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 1-9 shows the airflow patterns for the 12-, 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.

Figure 1-9 24- and 48-Port Switch Airflow Patterns

For information about installing a fan module and the module specifications, see Chapter 3 "Power Supply and Fan Module Installation," and "Technical Specifications."

XPS Connector


Warning Attach only the following Cisco external power system to the switch: XPS 2200. Statement 387

The Cisco XPS 2200 is a expandable power system that can support nine network switches and provides power to one or two failed switches at a time. It senses when the power supply of a connected switch fails and provides power to the failed switch.

Use the XPS 2200 only with approved Cisco XPS cables. You can order these XPS cables for connecting your switch to the XPS 2200 from your Cisco sales representative:

CAB-XPS-58CM (0.58-meter cable)

CAB-XPS-150CM (1.5-meter cable)

The Cisco XPS 2200 has a nominal output level of -56 V. The total maximum output power depends on the installed power supply modules.

The nine ports on the XPS 2200 provide the power and management signals to the Catalyst 3750-X and 3560-X switches. Other switch models do not support this management communication. The XPS 2200 communicates with each switch through the 12-pin cable. All connected switches can simultaneously communicate with the XPS 2200. You can configure these XPS 2200 features through the switch software:

Enable XPS active or standby mode for each connected switch

Configure switch priority for XPS support

List the connected switches and power supply module sizes

Report when a switch is powered by the XPS

Report the XPS power supply module status

Read and monitor backup, failure, and exception history

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

See the switch software configuration guide on Cisco.com:

http://www.cisco.com/en/US/products/ps10745/products_installation_and_configuration_guides_list.html

StackPower Connector (Catalyst 3750-X Switches)

The Catalyst 3750-X switches have a StackPower connector for use with Cisco StackPower cables to configure a switch power stack that includes up to four switches. By adding an XPS 2200 expandable power system, you can configure a power stack that comprises up to nine 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 (Catalyst 3750-X Switches)" section.

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 Ethernet management port or one of the console ports (see Figure 1-6 and Figure 1-7). The 10/100 Ethernet management port connection uses a 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 uses a USB type-A-to-USB 5-pin mini-Type B cable.

Table 1-20 shows the Ethernet management port LED colors and their meanings.

Table 1-20 RJ-45 Console Port LED

Color
Description

Green

Active link to PC

Off

Inactive link

Amber

POST failure


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, (part number 800-33434).

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 for installation instructions.

When the switch detects a valid USB connection to a powered device, input from the Ethernet connection 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 1-3) 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.

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/cisco/software/navigator.html?mdfid=279230132&i=rp

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

Device manager

You can use the device manager in the switch memory to manage individual and standalone switches. This web browser interface offers quick configuration and monitoring from anywhere in your network. For information, see the switch getting started guide and the device manager online help.

Cisco IOS CLI

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.

CiscoWorks application

The CiscoWorks LAN Management Solution (LMS) is a suite of management tools that simplify the configuration, administration, monitoring, and troubleshooting of Cisco networks. See the LMS documentation for more information.

SNMP network management

You can manage switches from a Simple Network Management Protocol (SNMP)-compatible management station that is running platforms such as HP OpenView or SunNet Manager. The switch supports a comprehensive set of Management Information Base (MIB) extensions and four Remote Monitoring (RMON) groups. See the switch software configuration guide on Cisco.com and the documentation that came with your SNMP application for more information.

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.