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en:blog:2019:2019-09-04 [2019-09-05 15:10] Decomo 作成 |
en:blog:2019:2019-09-04 [2019-09-07 23:53] (current) Decomo |
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====== The world cheapest 40GbE switch CRS326-24S+2Q+RM arrived! ====== | ====== The world cheapest 40GbE switch CRS326-24S+2Q+RM arrived! ====== | ||
- | MikroTik CRS326-24S+2Q+RM arrived at home! It is the world cheapest 40GbE capable Ethernet switch out of legally distributed ones as of 9/4/2019, I guess. That's our MikroTik! But then, I got their product for the first time. | + | MikroTik CRS326-24S+2Q+RM |
{{ : | {{ : | ||
- | I suppose the guys come to see this page are aware of it, but CRS326-24S+2Q+RM has 10GbE capable 24 SFP+ ports and additionally two 40GbE QSFP+ ports, and its prices | + | I suppose the guys come to see this page are aware of it, but CRS326-24S+2Q+RM has 10GbE capable 24 SFP+ ports and additionally two 40GbE QSFP+ ports, and its price is only 499 USD. What a crazy stuff it is! Though the price as worth is pretty expensive if I though with a calm mind, it is a unprecedented price-slashing considering |
That's why I couldn' | That's why I couldn' | ||
- | I tentatively test a 40GbE connection below environment in figure because of some reasons. | + | I tentatively test a 40GbE connection below environment in figure because of some reasons. |
^ ^ Server | ^ ^ Server | ||
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^ NIC| ConnectX-3 Pro EN (PCIe 3.0x8) || | ^ NIC| ConnectX-3 Pro EN (PCIe 3.0x8) || | ||
- | It seemes the switching | + | It seems a switching |
+ | |||
+ | The switch supports dual boot of RouterOS and SwOS, so it can do L3 processing to some extent. Having said that, the processes which aren't handled by the chip are processed by CPU, and what is worse, an internal bandwidth between them is only 1Gbps. Therefore, we had better use it as plain L2 switch, or should keep lightweight L3 usage such as connecting to WAN with simple packet filtering. Otherwise its valuable performance will be completely dead. Fortunately it has enough 10GbE ports, so I think fit to pass on the L3 processes to a dedicated router with a LAG. AT-x510-28GTX which is a L3 switch I got some time ago will have tears of joy for this application. | ||
+ | |||
+ | Following table shows rough power consumptions: | ||
+ | |||
+ | ^ Situation | ||
+ | | Idle(No SFP modules) | 13W | | ||
+ | | Idle(Two 40GBASE-SR4 modules link up) | 15~16W | | ||
+ | | Run iperf with 40GBASE-SR4 interfaces | 17W | | ||
+ | |||
+ | Cooling fans were pretty noisy in factory default RouterOS version. I updated it to version 6.45.4, now they get quieter than before. The OS aggressively controls their speed between zero to full blast depending on the internal temperature. I think these specs are very kindly for common home use. Thank you, MikroTik. Well, when the fans is running, they cause a certain level of noise. It seems themselves' | ||
- | The switch supports dual boot of RouterOS and SwOS, so it can do L3 processing to some extent. Having said that, processes which aren't handled by the chip are processed by CPU, and what is worse, an internal bandwidth between them is only 1Gbps. Therefore, we had better use it as plain L2 switch, or should keep lightweight L3 usage such as connecting to WAN with simple packet filetering. Otherwise the valuable performance will be completely dead. Fortunately it has enough 10GbE ports, so I think fit to pass on the L3 processes to a superior router with a LAG. AT-x510-28GTX which is a L3 switch I got some time ago will have tears of joy! |