Caution BECA TEKSTS

The device should be used in optical fiber applications where cables can be pulled through the cable glands and then connected to the QSFP modules. It also supports DAC, AOC and Breakout cables with no-separable connectors, however the use of them in some ports is possible only with removed cable gland. Note that using this device without cable gland will reduce its IP code from IP66 to IP54.

Quickstart

• Download the latest version of SwitchOS software from https://mikrotik.com/download;
• Connect your computer to one of the Ethernet ports;
• Connect the device to the power supply;
• Set the IP address of your computer to 192.168.88.2;
• Open your web browser, the default IP management address is 192.168.88.1, with username: admin and no password (or, for some models, check user and wireless passwords on the sticker);
• Upload a file with the web browser in the Upgrade tab, the device will reboot after the upgrade;
• Set your password to secure your device.

Mounting

Powering

The device accepts powering from the two DC power jacks (redundancy fail-over) or from the first Ethernet port:

• Direct input power jacks DC1, DC2 (5.5 mm outside and 2 mm inside, female, pin positive) accept DC ⎓ 12-57 V DC.
• The first Ethernet port accepts passive or 802.3af/at Power over Ethernet in the range of DC ⎓ 12-57 V.

The power consumption of this device under maximum load with fiber SFP modules is 10 W when using all RJ10 copper modules, up to 18 W.
When using 802.3af/at to power this device, we recommend not using grounding for best compatibility.
Connecting to a POE Adapter:

1. Connect the Ethernet cable from the device to the POE port of the POE adapter.
2. Connect an Ethernet cable from your LAN to the LAN port of the POE adapter, please mind arrows for data and power flow.
3. Connect the power cord to the adapter, and then plug the power cord into a power outlet.

Booting process

The device supports booting RouterOS (for complete routing and switching configuration) or SwOS (for only using as a switch). By default, the device will boot RouterOS, but you can reboot into SwOS in the following ways:

• From SwOS: In the System menu, click the "Boot RouterOS" button on the bottom of the page.
• From RouterOS: in the System, RouterBOARD menu, click "Settings" and there select "Boot OS".

Configuration

RouterOS includes many configuration options in addition to what is described in this document. We suggest starting here to get yourself accustomed to the possibilities: https://wiki.mikrotik.com/wiki/Manual:CRS3xx_series_switches.
The Initial connection has to be done via the Ethernet cable, using the MikroTik Winbox utility. Winbox should be used to connect to the default IP address of 192.168.88.1 from any port, with the username admin and no password.
For recovery purposes, it is possible to reinstall the device from the network, see the CRS305-1G-4S+IN#Reset button.
In case the IP connection is not available, the Winbox tool (https://mt.lv/winbox) can also be used to connect to the MAC address of the device. Applies only when the device has booted RouterOS.

Extension Slots and Ports

• Four SFP+ cages, which accept both 1.25 Gb SFP and 10 Gb SFP+ modules.
• One Gigabit Ethernet port, suggested to be used for management (Supports Auto MDI/X so you can use either straight or cross-over cables for connecting to other network devices). The Ethernet port (ETH/BOOT) can also be used for network booting and recovery with Netinstall.

Reset button

To use the reset button, hold it and then turn on the device, while still holding the button.

• Release the button when green LED starts flashing, to reset RouterOS configuration. To not load backup bootloader, you can start holding the button after power is already applied.
• Release the button after LED is no longer flashing (~20 seconds) to cause the device to look for Netinstall servers (required for reinstalling RouterOS over the network). You can also release the button at the time when the device has appeared in the Netinstall utility device list.

Regardless of the above option used, the system will load the backup RouterBOOT loader if the button is pressed before power is applied to the device. Useful for RouterBOOT debugging and recovery.

Accessories

Package includes the following accessories that come with the device:

Please visit wiki pages for MikroTik SFP module compatibility table: https://wiki.mikrotik.com/wiki/MikroTik_SFP_module_compatibility_table

Operating system support

The device supports dual boot SwOS software version 2.9 and RouterOS v6. The specific factory-installed version number is indicated in the RouterOS menu /system resource. Other operating systems have not been tested.

https://wiki.mikrotik.com/wiki/SwOS/CRS3xx

Safety Notice

Electric shock hazard. This equipment is to be serviced by trained personnel only.

Federal Communication Commission Interference Statement

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 in a commercial installation.

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 the user will be required to correct the interference at his own expense

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Note: This unit was tested with shielded cables on the peripheral devices. Shielded cables must be used with the unit to ensure compliance.

Innovation, Science and Economic Development Canada

This device contains license-exempt transmitter(s)/receiver(s) that comply with Innovation, Science, and Economic Development Canada’s license-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device.

L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes: 1) L’appareil ne doit pas produire de brouillage; 2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe [A] est conforme à la norme NMB-003 du Canada.

CAN ICES-003 (A) / NMB-003 (A)

UKCA marking