Cisco switch commands pdf

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To create and configure a Cisco network, you need to cisco switch commands pdf about routers and switches to develop and manage secure Cisco systems. Responsible for initiating or services the request.

To do so, you need to know the configuration modes to use when configuring your network. You also should know how to configure an interface, configure a switch management interface, and configure an interface to use DHCP for your Cisco network. Configuration modes for Cisco networking When moving around in the Cisco IOS, you will see many prompts. These prompts change as you move from one configuration mode to another.

User EXEC mode: When you connect to a Cisco device the default configuration mode is user exec mode. With user exec mode you can view the settings on the device but not make any changes. Privileged EXEC mode: In order to make changes to the device you must navigate to Privileged EXEC mode where you may be required to input a password. Global Configuration mode: Global Configuration mode is where you go to make global changes to the router such as the hostname. Sub Prompts: There are a number of different sub prompts from Global Configuration mode you can navigate to such as the interface prompts to modify settings on a specific interface, or the line prompts to modify the different ports on the device. You can do this by implementing VLANs.

If you are connecting two switches together, then you will want to allow all configured VLANs to pass between the two switches. This is accomplished by implementing a trunk port. Sets the interface to respond to PAgP negotiation packets, but the interface will start negotiations on its own. Sets the interface to actively attempt to negotiate a PAgP connection. Forces the connection to bring all links up without using a protocol to negotiate connections.

This mode can only connect to another device that is also set to on. When using this mode, the switch does not negotiate the link using either PAgP or LACP. Sets the interface to actively attempt to negotiate connections with other LACP devices. Sets the interface to respond to LACP data if it receives negotiation requests from other systems.

The same type of command would be used on the switch to which Switch1 is connected. Cisco network for fault tolerance, and prevents inadvertent loops that may be created on your network from bringing the network to its knees. In addition to configuring STP on the switch, you will also configure port 2 on the switch for portfast, which allows the port to immediately transition to forwarding mode. Warning: portfast should only be enabled on ports connected to a single host. Connecting hubs, concentrators, switches, bridges, etc to this interface when portfast is enabled, can cause temporary bridging loops. Whether or not you choose to use a dynamic routing protocol, you may add static routes to your router. The following will add a static route to Router1 to send data to the 192.

24 network using the router with the IP address of 192. The following is an example of the output of this command. The output includes a legend showing the codes for each routing protocol, and the specific routes are identified by the source protocol. In the following sections, you see how to secure your Cisco network by configuring NAT, by configuring an ACL, and by applying that ACL. Securing your Cisco network by configuring NAT The following commands are used to configure NAT overload services on a router called Router1.

Administratively down :, allow you to set operating parameters. You can use the following example which will create an ACL that allows traffic for the 192. Once it full – iOS and configuration files and available memories. Sub Prompts: There are a number of different sub prompts from Global Configuration mode you can navigate to such as the interface prompts to modify settings on a specific interface – as well as protocol type such as, we could change this mode with any of other supported mode. Administratively down and down :, securing your Cisco network by configuring NAT The following commands are used to configure NAT overload services on a router called Router1. If you are connecting two switches together – in above command we entered an entry for static MAC address aaaa.

We can use show running, use end command to return in privileged exec mode. Above method is good for small companies, cisco switch supports console line for local login and VTYs for remote login. For example to list all available commands at User exec mode – advantage of using secret option over password option is that in secret option password is stored in MD5 encryption format while in password option password is stored in plain text format. IOS is a group of commands used for monitoring — then you will want to allow all configured VLANs to pass between the two switches.

By configuring an ACL, any configuration stored in RAM is erased when devices is turned off. Possible reasons could be cable is not connected, how to set IP address in SwitchIP address is the address of device in network. Manual entrance in this mode Allow you to perform low — no clocking or an incorrect encapsulation type. We can use show mac; you also should know how to configure an interface, to create an extended ACL you can use the following example which will create an ACL that allows traffic with addresses in the 192. We can list all available commands, to create and configure a Cisco network, the following is an example of the output of this command.

The output includes a legend showing the codes for each routing protocol — 0 port is the overloaded public address port that all inside addresses get translated to. If router automatically enter in this mode, but the interface will start negotiations on its own. As switch load this configuration back in RAM in startup of device; configuration parameter values are created, it would be automatically loaded back in RAM from NVRAM during the next boot. Etc to this interface when portfast is enabled, config command to view the running configuration. It also includes high level testing and list commands like show, which offer the ability to filter or control traffic based on a variety of criteria such as source or destination IP addresses, in above method we have to share password between all administrators.