Cisco Catalyst Micro Series Switch Hardware Installation Guide

Switch Models

Table 1. Cisco Catalyst Micro Series Switch Models and Description
Switch Model	Description
CMICR-4PS	Four 1 Gigabit Ethernet downlink PoE+ ports; two 1 Gigabit Ethernet SFP uplink ports; uses external AC/DC adapters for power sourcing.
CMICR-4PC	Four 1 Gigabit Ethernet downlink PoE+ ports; one 1 Gigabit Ethernet SFP and one 1 Gigabit Ethernet RJ-45 uplink ports; uses external AC/DC adapters for power sourcing.
CMICR-4PT	Four 1 Gigabit Ethernet downlink PoE+ ports; one 1 Gigabit Ethernet RJ-45 uplink port and one 1 Gigabit Ethernet RJ-45 or SFP combo uplink ports; two USB-C connectors for power sourcing; uses external AC/DC adapters or external PSE through PD ports for power sourcing.

Physical Components

This section identifies the physical components that constitute the Cisco Catalyst Micro Series Switches.

Figure 1. Detailed Architecture of a CMICR-4PS Switch


1	Four 1 G PoE+ downlink ports	4	Power adapter slot
2	Mode button	5	Micro USB console port
3	Two 1 G SFP uplink ports	6	microSD memory card slot

Figure 2. Detailed Architecture of a CMICR-4PC Switch


1	Four 1 G PoE+ downlink ports	5	1 G SFP uplink port
2	Mode button	6	Micro USB console port
3	1 G Copper uplink port	7	microSD memory card slot
4	Power adapter slot	-	-

Figure 3. Detailed Architecture of a CMICR-4PT Switch


1	USB-C ports	6	1 G combo uplink ports
2	USB-C-PWR LED	7	1 G Copper uplink port
3	1 G downlink ports	8	microSD memory card slot
4	Mode button	9	Micro USB console
5	Power supply slot	-	-

Hardware Features

This section describes the different hardware features supported on Cisco Catalyst Micro Series Switches.

PoE and PoE+ Ports

The PoE/PoE+ ports on the switch provide PoE+ support for devices compliant with IEEE 802.3af and IEEE 802.3at and also provide PoE support for end points such as access points, IP camera or surveillance systems, Cisco IP Phones and so on. The PoE switch ports are Power Source equipment (PSE) capable and source power to PD devices connected to the downlink ports. The switch can source PoE power of up to 30W per port, with a total budget that varies depending on the power adapter used. For more information about total PoE budget, see Power Supply Slot.

The PoE ports use RJ-45 connectors with Ethernet pinouts. The end points are connected to the switches using CAT5/CAT5e/CAT6/CAT6a cables and they are powered and controlled through IP.

Console Ports

The console ports connect the switch to a PC running Microsoft Windows or to a terminal server. Cisco Catalyst Micro Series switches has a USB 2.0 Type B micro console port (5-pin connector).

To use the USB 2.0 Type B micro console port, an external 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. With the USB device driver, you can connect and disconnect the USB cable from the console port without affecting Windows HyperTerminal operations.

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

The USB 2.0 Type B micro connector allows a USB Type A port to be connected directly to the switch console management port using a USB Type A to USB Type B micro cable.

The default baud rate for CMICR-4PT console is 9600 bits per second and for CMICR-4PS console is 115200 bits per second. Configure the baud rate and character format of the PC or terminal used for console access to match the console port default rate.

Combo Uplink Ports

CMICR-4PT switch consists of an uplink SFP/RJ45 combo port. On the rear side, the switch has two 1 G uplink ports of which one is an RJ45 copper port and the other is an SFP fiber port which functions together as the combo port. However, only one port can be used at time; the port accepts only a 10/100/1000BASE-T copper connection or an SFP fiber connection. Combo port does not support PoE.

By default, the port has RJ45 interface. You can switch between SFP or RJ45 using the media-type command on the interface.

USB-C Connector

CMICR-4PT switch contains two USB-C connectors for sourcing power to the end devices such as laptops, monitors, smart phones and so on. Each port can provide up to 60 W of power based on the pass through power availability.

microSD Flash Memory Card Slot

The switch provides a memory card slot that enables booting the device using a removable microSD flash memory card. When configured, the switch checks for configuration files and boot images on the microSD card and prefers booting from microSD memory card to system flash. This enables quick upgrades and replacement of switches without reconfiguring the new switch.

The microSD flash is disabled during reload, and you need to manually enable it by using the sdflash enable command. The performance of the switch is not affected by this behavior.

Power Supply Slot

The switch provides a power supply slot for powering the switch using an external AC-DC adapter. It supports two power supply adapters of 80 W and 65 W respectively. The default power adapter supported is 65 W. You must use the power inline ps watt power number CLI to switch between the power supplies. To return to the default settings use the no form of the command.

Catalyst CMICR-4PT switches can be powered either through an auxiliary AC-DC power adapter or from an external PSE through the UPOE PD ports. If both the power adapter and the UPOE ports are available, power is shared from both the sources. The auxiliary AC-DC power adaptor provides power redundancy and additional PoE.

You can order an adapter with the switch, or you can order it later from your Cisco representative. The following are the power adapters supported by Cisco Catalyst Micro Series switches.

PSU-80W-AC: 80 W AC power adapter
65 W AC to DC power adapter with a specification of 53 V/1.22 A

Table 2. Available PoE Power for CMICR-4PS and CMICR-4PC Switches
Power Adapter Model	Available PoE
PSU-80W-AC	62 W
65 W AC to DC power adapter	50 W

Table 3. Available Pass-Through Power for CMICR-4PT Switches
Adapter Power	Uplink PD Power	Pass-Through Power (W)
Adapter Power	Uplink PD Power	PoE	USB-C	Shared between PoE and USB-C
80	-	62	55	55
80	15	62	55	55
80	30	62	55	55
80	60	99	90	90
80	90	120	90	90
-	60	29	23	23
-	90	46	39	39

LEDs

You can use the system and port LEDs to monitor switch activity and performance. To conserve power, the LEDs remain off by default when switch is powered on. Press the Mode button to turn on the LEDs.

Downlink Port Data LEDs

RJ-45 ports have port LEDs. These LEDs, as a group or individually, provide information about the switch and about the individual ports.


Color	Description
Off	No link or port was administratively shut down.
Green	Link present but is not sending or receiving data.
Blinking green	Activity. Port is sending or receiving data.
Blinking 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 link faults.
Amber	Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data. After a port is reconfigured, the port LED is amber for up to 30 seconds as STP searches for loops.

Downlink Port PoE LEDs


Color	Description
Off	PoE is not enabled.
Green	PoE is enabled. Ports are functioning correctly.
Blinking amber	PoE port has been denied power. PoE port has a PoE fault.

Uplink Port Data LEDs


LED Color	Description
Off	No link or port was administratively shut down.
Green	Link present but is not sending or receiving data.
Blinking green	Activity. Port is sending or receiving data.
Blinking 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 link faults.
Amber	Port is blocked by Spanning Tree Protocol (STP) and is not forwarding data. After a port is reconfigured, the port LED is amber for up to 30 seconds as STP searches for loops.

System LED


Color	System Status
Off	System is not powered on.
Green	System is operating normally.
Amber	System is receiving power but is not operating properly.

USB-C LED


Color	Description
Off	USB PD power is not sourced or no USB device is connected.
Green	USB device is connected and power sourcing is initiated.

Mode Button

The mode button is used for resetting the switch, selecting or changing an LED mode, and manually waking up the switch from hibernation mode.

In Cisco Catalyst Micro Series Switches, LEDs are normally turned off to save power. When the mode button is pressed, the LEDs turn on for a set period of 60 seconds before they turn off again to save power. This can be overridden by a configuration parameter which alters the default 60 second timeout or disables LED power savings completely. All LEDs are affected by this function except the System LED, which only dims and does not turn off completely.


System State	Duration	Action
LEDs Off	Any	Activates the LEDs for 60 seconds, then returns the LEDs to Off State. System LED dims but does not turn off.
LEDs On	Any	Toggle between "Stat" and "Speed" LED modes. These modes only affect the port data LEDs.
Bootloader Active	Hold until bootloader completes	Stops autoboot and remains at bootloader prompt.
Switch in Deep Sleep	Hold for more than 1 second	Switch wakes up to full power mode.

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Cisco Catalyst Micro Series Switch Hardware Installation Guide

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