Let's look at the delay introduced by the presence of the switch in the transmission of network packets, for which we will use the psping utility from the PsTools package from Microsoft. One of three protocols is available to protect against loops: RST (default), MRST, and MST. There can be as many VLANs as you like on one port, including private networks, but you can limit the number of MAC addresses per port and VLAN to prevent unknown devices from connecting to the network. Or if we are talking about VLANs, they are supported here as a static configuration based on ports (which is what even the cheapest switches have) and: And how many of them support channel aggregation for those who are not enough 10 gigabits? Here is the XS1920-12 in question - maybe there are 6 groups available to you, in each of which you can define any number of ports using a static method or LACP. Today, almost 4 years after the release of the XS1920-12, there are many 10 Gigabit switches on sale, including much cheaper ones.
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It's more resilient than many server motherboards, and even has dual BIOS so you can rollback if an update fails. Moreover, XS1920-12 has an extended temperature range: it can work when "overboard" - from 0 to 50 degrees Celsius.
That said, even for such a thermally loaded design, Zyxel retained the side cooling scheme so that the switch could be installed in short, closed wall cabinets. It's nice to see expensive branded components with a long service life under tough conditions.
By the way, about the components: the power supply unit - Delta Electronics (not to be confused with the "Delta" that makes the yellow batteries) with Japanese Nichicon capacitors, the fans - from the same "Delta", need no introduction, on the motherboard board - Sanyo capacitors.
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