Switch configuration physical connection technology operation and legend

Because the portable computer is easy to carry, the configuration switch is usually done with a notebook computer, there is no notebook in the case, you can also use the desktop, but moving up some trouble. The local configuration of the switch is communicated by means of a direct connection between the computer and the Console port of the switch, and its connection figure is shown in Figure 1.

Figure I

Network-managed switches typically have a "Console" port (as described in the previous hub, as well as switches) that are designed to be configured and managed for the switch. Connecting and configuring the switch through the console port is the step that must be passed to configure and manage the switch. While there are several other ways to configure and manage switches, such as Web methods, Telnet, and so on, these methods must be based on a basic configuration through the console port. Because other methods often require IP addresses, domain names, or device names to be implemented, and the newly purchased switches are clearly not built with these parameters, connecting and configuring the switch via the console port is the most common and basic management and configuration that network administrators must master.

The different types of switch console ports are located in the same location, some on the front panel (such as Catalyst 3200 and Catalyst 4006), and others on the back panel (such as Catalyst 1900 and Catalyst 2900XL). Typically, the modular switches are mostly in the front panel, while the fixed configuration switches are mostly in the back panel. However, there is no need to worry that the console port cannot be found, and there will be an identity similar to "CONSOLE" on the top or side of the port, as shown in Figure 2.

Figure II

In addition to the different locations, the console port has a different type, with the vast majority (such as Catalyst 1900 and Catalyst 4006) using the RJ-45 port (shown in Figure 2), but there are also a handful of DB-9 serial ports (such as catalyst 3200) or DB-25 serial port (such as Catalyst 2900).

Whether the switch uses a DB-9 or DB-25 serial interface or a RJ-45 interface, it needs to be connected to a serial port configured with a computer (usually called a terminal) through a dedicated console line. corresponding to the console port of the switch, the console line is also divided into two types: one is a serial line, that is, both ends are serial interface (both ends of the parent), both ends can be inserted into the computer's serial port and switch console port The other is a flat line with a RJ-45 joint (rj-45-to-rj-45) at both ends. Because flat lines are both RJ-45 interfaces that cannot be connected directly to the computer's serial port, you must also use a rj-45-to-db-9 (or rj-45-to-db-25) adapter, as shown in Figure 3. In general, such a console line and the corresponding DB-9 or DB-25 adapter are randomly presented in the box of the switch.