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1.2 | |
Routers | |
| 1.2.4 | |
Management port connections |
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The console port and the auxiliary (AUX)
port are management ports. These asynchronous serial ports are not
designed as networking ports. One of these two ports is required for
the initial configuration of the router. The console port is
recommended for this initial configuration. Not all routers have an
auxiliary port.
When the router is first put into
service, there are no networking parameters configured.
Once this initial configuration is entered into the router through the console or auxiliary port, the router can then be connected to the network for troubleshooting or monitoring. The router can also be configured from
a remote location by dialing to a modem connected to the console or
auxiliary port on the router.
The console port is also preferred over the auxiliary port for troubleshooting. This is because it displays router startup, debugging, and error messages by default. The console port can also be used when the networking services have not been started or have failed. Therefore, the console port can be used for disaster and password recovery procedures.
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Therefore the router cannot communicate with any network. To prepare for
initial startup and configuration, attach an RS-232 ASCII terminal, or
a computer emulating an ASCII terminal, to the system console port.
Then configuration commands can be entered to set up the router.
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