In this article I will introduce the Cisco Internetwork Operating System (IOS) comm& line interface (CLI) for the 2960 series switch. You will need to logon lớn a switch andbecome familiar with the different levels of access on the switch. You will also becomefamiliar with the commands available to lớn you in each mode (user or privileged) and theswitch help facility, history, và editing features.
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User vs. Privileged Mode
User mode is indicated with the > next to lớn the switch name. You can look at settings butcan not make changes from user mode. In Privilege mode, indicated by the #, you can doanything. To get into privilege mode the từ khóa is enable.
HELP
To view all commands available from this mode type:?This will give you the danh mục of allavailable commands for the switch in your current mode. You can also use the questionmark after you have sầu started typing a commvà. For example if you want to lớn use a showcommand but you vày not remember which one it is, use the ? as this will output allcommands that you can use with the show command.
Configuration Mode
From privilege mode you can enter configuration mode by typing config term commandyou can exit configuration mode type type kết thúc or +z
Configuration of Cisteo 2960 Switch
To practically implement these comm& either create a simple topology on packet tracer or tải về this topology.
Example topology for basic switch commands
To know all available comm& on user exec mode type ? & press enter
Switch>?Exec commands: <1-99> Session number lớn resume connect xuất hiện a terminal connection disconnect Disconnect an existing network connection enable Turn on privileged commands exit Exit from the EXEC logout Exit from the EXEC ping Skết thúc echo messagesThree commvà can be used lớn logout from terminal use any one
Switch>enableSwitch#disableSwitch>exitSwitch con0 is now availablePress RETURN lớn get started.Show version command will tell about the device platsize và detected interface & tiện ích ios name
Switch#show mac-address-table Mac Address Table-------------------------------------------Vlan Mac Address Type Ports---- ----------- -------- ----- 1 0001.643a.5501 DYNAMIC Gig1/1Run time configuration of ram can be any time by simple show run commands
Switch#show running-configBuilding configuration...Current configuration : 925 bytesversion 12.2no service password-encryption!hostname Switch<đầu ra is omitted>To view startup configuration < Stored in NVRAM> use show start command
Switch#show startup-configCurrent configuration : 925 bytesversion 12.2no service password-encryption!hostname Switchshow vlan commvà will give the detail overview of all vlan configured on switch
Switch#show vlanVLAN Name Status Ports---- -------------------------------- --------- -----------------------1 mặc định active sầu Fa0/1, Fa0/2, Fa0/3, Fa0/4 Fa0/5, Fa0/6, Fa0/7, Fa0/8 Fa0/9, Fa0/10, Fa0/11, Fa0/12 Fa0/13, Fa0/14, Fa0/15, Fa0/16 Fa0/17, Fa0/18, Fa0/19, Fa0/trăng tròn Fa0/21, Fa0/22, Fa0/23, Fa0/24show interface comm& will show all detected interface with their hardware mô tả tìm kiếm & configuration
Switch#show interfacesFastEthernet0/1 is up, line protocol is up (connected) Hardware is Lance, address is 0060.2f9d.9101 (bia 0060.2f9d.9101) MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set<đầu ra is omitted>interface vlan 1 is used khổng lồ assign ip address và default gateway to lớn switch. Show interface vlan 1 will give sầu a over view of vlan1.
Switch#show interface vlan1Vlan1 is administratively down, line protocol is down Hardware is CPU Interface, address is 0060.5c23.82ae (bia 0060.5c23.82ae) MTU 1500 bytes, BW 100000 Kbit, DLY 1000000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopbaông xã not set ARP. type: ARPA, ARP. Timeout 04:00:00delete commvà is used lớn delete all vlan configuration from switch Don’t add space between flash & vlan.dat Run this exactly shown here adding a space could erase flash entirely leaving switch blank
Switch#delete flash:vlan.datDelete filename
Switch#erase startup-configErasing the nvram filesystem will remove all configuration files!Continue?
Switch#configure terminalEnter configuration commands, one per line. End with CNTL/Z.Now change default switch name khổng lồ switch 1
Switch(config)#hostname Switch1Set enable password to lớn vinita và secret lớn nikki
Switch1(config)#enable password vinitaSwitch1(config)#enable secret nikkiSet console password lớn vinita & enable it by login comm&, order of commvà is important phối password before you enable it
Switch1(config)#line console 0Switch1(config-line)#password vinitaSwitch1(config-line)#loginSwitch1(config-line)#exitEnable 5 telnet session < vty0 - vty4> for router & set their password lớn vinita
Switch1(config)#line vty 0 4Switch1(config-line)#password vinitaSwitch1(config-line)#loginSwitch1(config-line)#exitNow mix switch ip address to lớn 192.168.0.10 255.255.255.0 and default gateway khổng lồ 192.168.0.5
Switch1(config)#interface vlan1Switch1(config-if)#ip address 192.168.0.10 255.255.255.0Switch1(config-if)#exitSwitch1(config)#ip default-gateway 192.168.0.5Set a mô tả tìm kiếm finance VLAN khổng lồ interface fast Ethernet 1
Switch1(config)#interface fastEthernet 0/1Switch1(config-if)#mô tả tìm kiếm finance VLANBy default switch automatically negotiate tốc độ & duplex but you can adjust it manually
Switch1(config-if)#duplex full%LINK-5-CHANGED: Interface FastEthernet0/1, changed state khổng lồ down%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state khổng lồ downSwitch1(config-if)#duplex auto%LINK-5-CHANGED: Interface FastEthernet0/1, changed state khổng lồ upSwitch1(config-if)#duplex half%LINK-5-CHANGED: Interface FastEthernet0/1, changed state to down%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1,changed state khổng lồ down%LINK-5-CHANGED: Interface FastEthernet0/1, changed state khổng lồ upSwitch1(config-if)#duplex autoSwitch1(config-if)#speed 10Switch1(config-if)#speed 100Switch1(config-if)#speed autoSwitch1(config-if)#exitSwitch1(config)#exitmac address table can be wiped out by clear commands
Switch1#showSwitch1#show mac-address-table Mac Address Table-------------------------------------------Vlan Mac Address Type Ports---- ----------- -------- ----- 1 0001.643a.5501 DYNAMIC Gig1/1Switch1#clear mac-address-tableSwitch1#clear mac-address-table ? dynamic dynamic entry typeSwitch1#clear mac-address-table dynamicTo restart switch use reload comm& < running configuration will be erased so copy it first lớn startup configuration >
Switch1#reloadProceed with reload?
| Command | descriptions |
| switch>? | The ? works here the same as in a router Used khổng lồ get the list of all available commands |
| switch>enable | User mode, same as a router |
| switch# | Privileged mode |
| switch#disable | Leaves privileged mode |
| switch>exit | Leaves user mode |
| switch#show version | Displays information about software và hardware. |
| switch#show flash: | Displays information about flash memory (will work only for the 2900/2950 series). |
| switch#show mac-address-table | Displays the current MAC address forwarding table. Xem thêm: Hiện Tượng Lag Là Gì ? Lag Là Gì, Nghĩa Của Từ Lag |
| switch#show running-config | Displays the current configuration in DRAM. |
| switch#show startup-config | Displays the current configuration in NVRAM. |
| switch#show vlan | Displays the current VLAN configuration. |
| switch#show interfaces | Displays the interface configuration and status of line: up/up, up/down, admin down. |
| switch#show interface vlan1 | Displays setting of virtual interface VLAN 1, the default VLAN on the switch. |
| To Rephối Switch Configuration | |
| Switch#delete flash:vlan.dat | Removes the VLAN database from flash memory. |
| Delete filename | Press Enter |
| Delete flash:vlan.dat? | Press Enter |
| Switch#erase startup-config | Erases the file from NVRAM. |
| Switch#reload | Restarts the switch. |
| To Set Host Names | |
| Switch#configure terminal | Moves to lớn global configuration mode |
| Switch(config)#hostname Switch1 | Creates a locally significant host name of the switch. This is the same comm& as the router. |
| Switch1(config)# | |
| To Set Passwords | |
| Switch(config)#enable password vinita | Sets the enable password to lớn vinita |
| Switch(config)#enable secret nikki | Sets the encrypted secret password khổng lồ nikki |
| Switch(config)#line console 0 | Enters line console mode |
| Switch(config-line)#login | Enables password checking |
| Switch(config-line)#password vinita | Sets the password khổng lồ vinita |
| Switch(config-line)#exit | Exits line console mode |
| Switch(config-line)#line vty 0 4 | Enters line vty mode for all five virtual ports |
| Switch(config-line)#login | Enables password checking |
| Switch(config-line)#password vinita | Sets the password to lớn vinita |
| Switch(config-line)#exit | Exits line vty mode |
| Switch(config)# | |
| To Set IP.. Addresses & Default Gateways | |
| Switch(config)#interface vlan1 | Enters the virtual interface for VLAN 1, the default VLAN on the switch |
| Switch(config-if)#ip address 192.168.0.10 255.255.255.0 | Sets the IP address and netmask to allow for remote access khổng lồ the switch |
| Switch(config-if)#exit | |
| Switch(config)#ip default-gateway 192.168.0.5 | Allows IP information an exit past the local network |
| To Set Interface Descriptions | |
| Switch(config)#interface fastethernet 0/1 | Enters interface configuration mode |
| Switch(config-if)#mô tả tìm kiếm Finance VLAN | Adds a description of the interface |
| To Set Duplex Operation | |
| Switch(config)#interface fastethernet 0/1 | Moves khổng lồ interface configuration mode |
| Switch(config-if)#duplex full | Forces full-duplexoperation |
| Switch(config-if)#duplex auto | Enables auto-duplex config |
| Switch(config-if)#duplex half | Forces half-duplex operation |
| To Set Operation Speed | |
| Switch(config)#interface fastethernet 0/1 | |
| Switch(config-if)#tốc độ 10 | Forces 10-Mbps operation |
| Switch(config-if)#tốc độ 100 | Forces 100-Mbps operation |
| Switch(config-if)#speed auto | Enables autotốc độ configuration |
| MAC Address Table | |
| switch#show mac address-table | Displays current MACaddress forwarding table |
| switch#clear mac address-table | Deletes all entries fromcurrent MAC addressforwarding table |
| switch#clear mac address-table dynamic | Deletes only dynamicentries from table |
Copy from computernetworkingnotes.com.
