How to debug a Cisco router (1)

I. Basic settings

Generally, you can set a Cisco router in five ways:

1. the Console port is connected to a terminal or a microcomputer that runs the terminal simulation software;

2. The AUX port is connected to a MODEM through a telephone line and is connected to a remote terminal or a computer that runs the terminal simulation software;

3. Use the TFTP server on Ethernet;

4. Use the TELNET program on the Ethernet;

5. Use the SNMP network management workstation on the Ethernet.

However, the first setting of a Cisco router must be done in the first way. Generally, the Super Terminal uses the comport for control. The hardware settings of the terminal are as follows:

Baud Rate: 9600

Data bit: 8

Stop bit: 1

Parity: None

Ii. Command operations

The Cisco router uses the following operating systems:

1. router>

At the router> prompt, the Cisco router is in the USER command State. At this time, you can view the connection status of the Cisco router and access other networks and hosts, however, you cannot see or change the configurations of the Cisco router. Enter? Press enter to view the commands that can be used in this status. IOS allows you to view commands that can be used in a certain State at any time ). After you press enable and press enter, follow the system prompts to enter the password. When the new Cisco router is debugged for the first time, do not enter the password. Press enter directly.) Enter # prompt, you can perform various operations on the Cisco router.

2. router #

After the Cisco router enters the privileged command status router #, it can not only execute all user commands, but also view and change the settings of the Cisco router. In this case, you can set the name and password of the Cisco router.

3. router (config )#

Enter configure terminal at the router # prompt, and the prompt "router (config) #" appears. At this time, the Cisco router is in the global setting state, and you can set the global parameters of the Cisco router.

4. router (config-if )#;

Router (config-line )#;

Router (config-router )#;...

When a Cisco router is in the local configuration status, you can set a local parameter for a Cisco router.

5. The Cisco router is in the RXBOOT status. Press ctrl-break within 60 seconds after it is started. In this case, the Cisco router cannot complete normal functions, only software upgrades and manual guidance can be performed. In this status, the password can be restored.