BTW #2：交换机（嗯，除了第 3 层交换机，可以说它们只是营销部门的交换机）实际上知道 MAC 地址在哪里。 它既不了解也不关心知识产权。
The "uplink" port on your SOHO switch is internally crossed over. It relieves you of having to use a crossover cable to connect two switches. That is the only difference.
BTW: There isn't a "this goes out to the internet" port on SOHO switches either. You're confusing switches and routers/gateways. This confusion may be encouraged by manufacturers putting the two logically separate devices in one piece of hardware, e.g., a router with a 4-port switch. While we're at it, a wireless router w/ 4 port switch is actually logically three separate devices (router, switch, and access point).
BTW #2: A switch (well, except for layer 3 switches, which arguably are only switches to the marketing department) actually learns where MAC addresses are. It neither knows about nor cares about IP.
Uplink ports can be thought of special ports for inter-switch connections. Sometimes they may have a higher speed (1G instead of 100M for example). Or they are interchangeable (laid out as modules).
Some have multiple uplink ports (I had one with two), so you may have redundancy or multiple switched connected this way with the same logic (where is the mac address (on wthich other switch)?).
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SOHO 交换机上的“上行链路”端口是内部交叉的。 它使您不必使用交叉电缆来连接两个交换机。 这是唯一的区别。
顺便说一句：SOHO 交换机上也没有“连接到互联网”端口。 您混淆了交换机和路由器/网关。 制造商将两个逻辑上独立的设备放入一个硬件（例如带有 4 端口交换机的路由器）中可能会助长这种混淆。 当我们讨论这个问题时，带 4 端口交换机的无线路由器实际上在逻辑上是三个独立的设备（路由器、交换机和接入点）。
BTW #2：交换机（嗯，除了第 3 层交换机，可以说它们只是营销部门的交换机）实际上知道 MAC 地址在哪里。 它既不了解也不关心知识产权。
The "uplink" port on your SOHO switch is internally crossed over. It relieves you of having to use a crossover cable to connect two switches. That is the only difference.
BTW: There isn't a "this goes out to the internet" port on SOHO switches either. You're confusing switches and routers/gateways. This confusion may be encouraged by manufacturers putting the two logically separate devices in one piece of hardware, e.g., a router with a 4-port switch. While we're at it, a wireless router w/ 4 port switch is actually logically three separate devices (router, switch, and access point).
BTW #2: A switch (well, except for layer 3 switches, which arguably are only switches to the marketing department) actually learns where MAC addresses are. It neither knows about nor cares about IP.
上行链路端口可以被认为是用于交换机间连接的特殊端口。 有时它们可能具有更高的速度（例如 1G 而不是 100M）。 或者它们是可以互换的（作为模块布置）。
有些有多个上行链路端口（我有一个和两个），因此您可能有冗余或多个交换机以这种方式连接，具有相同的逻辑（mac 地址在哪里（在其他交换机上）？）。
Uplink ports can be thought of special ports for inter-switch connections. Sometimes they may have a higher speed (1G instead of 100M for example). Or they are interchangeable (laid out as modules).
Some have multiple uplink ports (I had one with two), so you may have redundancy or multiple switched connected this way with the same logic (where is the mac address (on wthich other switch)?).