Switch and router technology-03-basic configuration of switch

The basic configuration of the switch

1. Master the command line foundation of Cisco devices
2. Basic configuration of the switch
3. Will pass Telnet and SSH Manage the switch remotely

Catalog

One 、 Command line foundation of Cisco devices

1.1 Enter the command line interface of the device

1.2 Use Xshell

1.3 Command line Basics

1.3.1 Switch from user mode to privileged mode

1.3.2 Privileged mode switches to global mode

1.3.3 Global mode switch interface mode

1.4 Exit the domain name resolution status

Two 、 Common switch configurations

2.1 Switch name （ Suitable for routers ）

2.2 How to view MAC surface （ Under privilege mode #）

2.3 Duplex mode of switch

2.4 View interface information （ Suitable for routers ）

2.5 The interface rate of the switch

2.6 To configure Control Password （ Suitable for routers ）

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One 、 Command line foundation of Cisco devices

1.1 Enter the command line interface of the device

Device support , Check whether the device interface has Control mouth

HyperTerminal software is required to connect   secret CRT、putt、Xshell（Linux You can also use ）

  Need to have Control Line （ One is crystal head , One end is com mouth ） Now many devices have com Change the mouth to USB mouth , Convenient notebook connection

In simulator ,control The line is the second light blue line , Host connection RS232 Interface , Switch connection Control mouth

Open in the host - desktop - terminal - View the configuration interface information , Generally, the default is OK , Then click to confirm

Enter the switch configuration interface

1.2 Use Xshell

Connection protocol selection SerIAL

We use control Port connection is used SerIAL agreement , Switches and routers are the same

New session , Select serial port 、 Configure port number and baud rate

1.3 Command line Basics

User mode （Switch>） View some statistics , In general , Use very, very little  “>” Express

Privilege mode （Switch#） Used to view and modify the configuration of the device , Generally, most of them are checked  “#“ Express

Global mode （Switch(config)#） Overall configuration parameters for the equipment                 “(config)#“ Express

Interface mode （Switch(config-if)#） Modify the configuration parameters for the interface of the device

1.3.1 Switch from user mode to privileged mode

Switch>enable  // It can be abbreviated en

Switch#

1.3.2 Privileged mode switches to global mode

Switch#configure terminal     // It can be abbreviated conf t

Switch(config)#

1.3.3 Global mode switch interface mode

Switch(config)#interface fa0/1  // Enter into fa0/1 Interface   It can be abbreviated int f0/1

Switch(config-if)#

FastEthernet0/xx  It belongs to fast Ethernet interface      Abbreviation f0/xx

GigabitEthernet0/xx  It belongs to Gigabit Ethernet interface   Abbreviation g0/1

Enter the corresponding mode , You can only enter one level at a time

Return to the corresponding mode , Return level by level , Use “exit“

If you want to return to privileged mode directly , Use “end”

1.4 Exit the domain name resolution status

When the command is input incorrectly , Hu enters a domain name resolution state

Switch#encon

Translating "encon"...domain server (255.255.255.255)

# Quick termination ：ctrl+shift+6

# Never resolve

Switch(config)#no ip domain-lookup   // Global mode

You can also press “>>” Button

Tips ：

Commands can be used Tab Carry out automatic completion

command ？ You can view the options of the command

Two 、 Common switch configurations

2.1 Switch name （ Suitable for routers ）

Configure a host name for the switch （ The name is an overall configuration parameter that should enter config Pattern ）

Switch>enable

Switch#

Switch#configure terminal

Switch(config)#hostname S1

S1(config)#

2.2 How to view MAC surface （ Under privilege mode #）

Switch>enable

Switch#

Switch#show mac-address-table

2.3 Duplex mode of switch

Configuring duplex mode must be configuration Connection interface , Configuring an unconnected interface makes no sense

The default is full duplex , No change required

Switch#

Switch#configure terminal

Switch(config)#int fa0/1

Switch(config-if)#duplex full    full duplex 

                       half    Half duplex 

                       auto    The adaptive 

2.4 View interface information （ Suitable for routers ）

Switch#show interface fa0/1  // see fa0/1 Basic parameter information of the interface 

Switch#show interface fa0/1 switchport // see fa0/1 The mode of the interface 

2.5 The interface rate of the switch

It is adaptive by default , No change required

Switch#

Switch#configure terminal

Switch(config)#int fa0/1

Switch(config-if)#speed 10

Switch(config-if)end

Switch#show interface fa0/1

Before the change , Fast Ethernet is the highest 100Mb/s

After modification , The highest 10Mb/s

2.6 To configure Control Password （ Suitable for routers ）

By default, the switch 、 The router control from 0 Start

Enter the switch global configuration mode 、 Then enter control Interface

Switch#

Switch#configure terminal

Switch(config)#line console 0        // Get into control Interface 

Switch(config-line)#password 123321  // Configure clear text password 

Switch(config-line)#login            // Application takes effect 

Switch(config-line)#

See the effect ： When you clock in again, the command line will prompt you to enter the password