如果您位于一个带有DHCP的网络上，那么您可能会发现您的系统在其主以太网端口上已经有了一个IP地址。
If you're on a network with DHCP, you'll probably find that your system has already come up with an IP address on its primary Ethernet port.
例如，对于以太网来说，网络标准数据包将发送到所有的物理端口，并且通过扫描通过网络传输的所有数据包，您可以检查其中的内容。
For example, with the Ethernet, network standard packets are echoed to all physical ports and, by scanning all the packets that go past on the network, you can examine the content.
它的管理遵循了SNMP简单网络管理协议，可以支持多种以太网协议和多个端口，并且端口数目具有可伸缩性。
Its management complies to SNMP simple network management protocol. It can support multiple kinds of Ethernet protocols and multiple ports. The number of ports is also scalable.
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