A cheap router 'MikroTik CRS305-1G-4S+IN' with a palm-sized explosion speed 10Gbps and redundant power supply



In 2018, “

au Hikari Home 10 Giga ” was launched, and “ FLET'S Hikari Cross ” was launched on April 1, 2020, and 10 Gbps line services gradually began to permeate households. However, it is also true that there are still few options for network devices that support 10 Gbps communication, and they are expensive. MikroTik 's router ' CRS305-1G-4S+IN ' supports 10Gbps communication with SFP+ 4 ports at an affordable price, and it can be used as both an L2 switch and a router, so you can actually check its function. It was.

MikroTik Routers and Wireless-Products: CRS305-1G-4S+IN
https://mikrotik.com/product/crs305_1g_4s_in



This time

eurodk buy CRS305-1G-4S + IN at. The outer box looks like this.



Contents are CRS305-1G-4S+IN main body, AC adapter, instruction manual.



The appearance of the main body looks like this. Since it is a metal case, it seems to be strong against heat generation.



On the front side, there are PoE compatible Gigabit Ethernet ports and 4 SFP+ ports capable of 10Gbps communication. The PoE port is not a port that supplies power to other devices, but a port that can receive power from other PoE power supply ports.



On the side, there is a reset button, an LED that shows the status of each port, an LED that allows you to customize the status to be displayed, and a power LED.



There are two power ports on the back for redundant configuration. There are also fasteners to hold the ground and cables together.



There are many holes on the top and bottom, so it looks like breathability.



I compared the size with Pixel 3 which has a long side of 145.6 mm and a width of 68.2 mm. The CRS305-1G-4S+IN is about the size of two Pixel 3s lined up.



The NIC prepared to communicate with CRS305-1G-4S+IN is

Mellanox 's ' ConnectX-3 Pro '.



The SFP+ cable used is from MikroTik.



Insert the cables into the 2 ports of SFP+, and connect the ConnectX-3 Pro attached to the server to the other end of each cable.



Set the IP address etc. on each server and connect the CRS305-1G-4S+IN between the two servers. When communicating with each other's server, be sure to use the interface connected to ConnectX-3 Pro by static routing just in case and confirm the communication speed with

iPerf3 , it can be confirmed that it can communicate at almost 10 Gbps. It was



Now that I know the power of the CRS305-1G-4S+IN as a 10G-compatible L2 switch, I will try an Internet connection using PPPoE to use the CRS305-1G-4S+IN as a router. CRS305-1G-4S+IN allows various settings from the browser by connecting to the network. The default IP address is '192.168.88.1/24', so first change the IP address of the PC connected to the CRS305-1G-4S+IN for setting.



When I accessed '192.168.88.1' from the browser, the screen about the interface of CRS305-1G-4S+IN was displayed. On this screen, you can check the

MTU value, upstream and downstream communication speeds, and the number of packets transferred per second.



Click 'Quick Set' in the upper right corner of the screen to make settings as a router.



Set 'Mode' to 'Router' and enter the ID and password for the PPPoE connection and the IP address of the router used on the LAN side. Note that if you do not check 'Bridge All LAN Ports', you will have to assign an IP address to each port used on the LAN side.



Connect your PC to CRS305-1G-4S＋IN and set the default gateway to the IP address of CRS305-1G-4S＋IN. The WAN line is an EO Hikari 10G line, so you should be able to enjoy high-speed Internet.



When I tried Cloudflare's speed test , the downlink was 524 Mbps, which was a bit unsatisfactory.



I also tried it on Fast.com , but this is also a speed that can not fully demonstrate the power of 760 Mbps and 10 G line.



When I tried a speed test with the PC directly connected to the terminating device and the PPPoE connection was established, the speed test of Cloudflare was 1.38Gbps, which was faster than when using CRS305-1G-4S+IN. ..



Fast.com also had a fairly good test result of 2.6 Gbps, so it was revealed that CRS305-1G-4S+IN was rate limiting. When connecting CRS305-1G-4S+IN to a 10G line and using it as a router, it may be necessary to be prepared for speed reduction.



CRS305-1G-4S+IN can use a firewall. Click 'IP' and then 'Firewall' on the browser setting screen to open the firewall setting screen. Click Add New to add a new rule.



The screen for setting the firewall is displayed.



'SNMP' in the 'IP' menu allows you to set the SNMP used to monitor network devices.



In the 'Routing' menu, a setting screen for routing protocols such as BGP and

OSPF appears. It seems that BGP can be routed as long as it is set.



The 'System' menu allows you to configure the CRS305-1G-4S+IN itself. For example, with 'LEDs', you can use the LEDs that the user can freely set, such as 'Turn on the LEDs when the SFP+ port is performing 10G communication'.



In 'Password', you can set the password of the user who is currently logged in to the setting screen.



If you set a password, the screen for confirming the user name and password will be displayed when you access the setting screen with a browser.



In the 'Tools' menu, functions for testing and verifying the network are available. For example, 'Ping' allows you to ping a specific IP address.



At the time of article creation, CRS305-1G-4S+IN was handled in the marketplace at Amazon.co.jp, and the lowest price was 14,324 yen including tax.

Amazon | MikroTik CRS305-1G-4S+IN | Mikrotik | Personal computer/peripheral device mail order

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in Review,   Hardware, Posted by darkhorse_log