Cisco Switch Configuration
When executing an internetwork installation, many mechanism and components are usually involved. It is the superiority of Cisco as being the only internetworking company with the well-made end to end internetworking solution. Cisco switches makes the LAN more competent by creating multiple collision domains. Each port of the switch is a split collision domain. With only one device connected per port, collisions are not probable and communications are more efficient. Cisco switches are very capable because they perform packet filtering and forwarding in hardware as opposed to software. Cisco switch can make lower the stack of performance and increases the speed of work.
Cisco Switch Configuration
Whenever you purchase a new switch from Cisco company there is no default configuration in it. You have to configure the switch with setup mode by the configuration dialogue. After the basic configuration of switch has been performed in setup mode you can verify, modify and delete the configuration settings of the switch in different configuration mode by the Cisco IOS command line interface. The two primary modes of Cisco IOS are user exec mode and privileged exec mode along with configuration modes such as global configuration mode, interface configuration mode and line configuration mode with distinctive prompts. Each mode has its specific commands to perform specific tasks. The user exec mode is the limited examination mode while the privileged exec mode is the detailed examination and the prerequisite of all other configuration modes. Global configuration mode is the mode for the global settings of the switch while the interface configuration mode and line configuration mode are used to configure the specific interface or line. Cisco IOS commands vary in different series of Cisco switches. Nowadays the most popular series of the Cisco switches are Cisco Catalyst 2950 series switch, Cisco 2960 series switch and Cisco 3548 series switch.
Cisco Switch Configuration Commands
It is important to know the basic cisco switch configuration with the cisco switch configuration commands and basic operational cisco switch commands to surly execute the performance of any internetwork.
Here are some basic configuration and operation commands of cisco switches:
- interface vlan 1: This is a global command used to configure the interface for VLAN.
- ip default-gateway [address]: This is a global command and set default gateway.
- ip address [address][subnet mask]: This command is used to configure the interface and set the ip address
- interface fast Ethernet 0/x: This command put user into user configuration mode.
- speed {10/100/1000/auto/nonegotiate}: This command set the speed of the interface.
- duplex {auto/full/half}: This command sets duplex mode for interface.
- switchport port-security mac-address: This command statically adds MAC address as allowed address on the port.
- switchport port-security mac-address sticky: This command tells switch to learn MAC addresses on the interface and add as secure MACs.
- switchport port-security violation {protect/restrict/shutdown}: This command tells switch what to do if an appropriate MAC tries to access through secure switch port.
- switchport port-security maximum [value]: This command allowed max of secure MAC on the interface.
- hostname [name]: This command assigns hostname to the switch.
- line vty 0 15: This command enters vty configuration mode.
- line con 0: This command enters console configuration mode.
- login: This command tells switch to ask for password.
- password[password]: This command sets the password.
- enable password [password]: This command sets password to enter privileged mode.
- enable secret [password]: This command sets encrypted password.
- configure terminal: This command enters configuration mode.
- show interfaces fastethernet 0/x: This command displays interface status.
- show interfaces: This command displays information about specific interface.
- show interfaces vlan 1: This command displays the ip address configuration.
- show [running/startup]-config: This command displays RAM/NVRAM settings.
- show-mac-address-table: This command displays the MAC address table.
- show port-security: [interface] [address]: This command shows security options on the interface.
- show version: This command displays the hardware and software status of the switch.
- show flash: This command displays the files and directories reside in the flash.
- show history: This command displays the last ten commands.
- erase startup-config: This command erases startup configuration.
Cisco 2960 Switch
Cisco Catalyst 2960 switch is one of the popular series introduced by the Cisco System with management console. There are two different models in Cisco Catalyst 2960 series switch with all uplink ports. One model has 12 fast Ethernet interfaces and the other has 24 fast Ethernet interfaces. The Cisco Catalyst 2960 series switch is mostly used in the industrial or ISP sector for its better performance and scalability features.
Assigning IP to Cisco 2950 Switch
You can assign an ip address to the Cisco 2950 switch with this command of global configuration mode.
Switch2950 (config) # interface vlan 1
Switch2950 (config-if) # ip address 192.168.0.1 255.255.255.0
How Do You Configure a Cisco 3548 Switch
To configure a Cisco 3548 switch is very simple. Connect the console port of the Cisco 3548 switch with the com port of your computer by using the UTP roll over cable. After physical connection make a HyperTerminal session and give any name to it. The com port setting should be Restore Default in the properties of com port. Then configure the basic configuration settings in setup mode with the help of configuration dialogue. The basic configuration includes the configuring of hostname, configuring the enable secret password, enable password and the line vty password and the configuration of each fast Ethernet interface along with the VLAN interface configuration. The ip configuration of vlan interface is also included in the basic configuration.
How Do I configure OSI Bridging on Cisco Switch
For configuring the OSI bridging on a Cisco switch you should have to use the command "bridging" in the global configuration mode of the Cisco switch.
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