What are CCNA Basic commands?

SPOTO Club written 3 years ago

The top commands to know for the CCNA would be the variations of the ‘show’ command. Common simulator questions would be presenting you with a set of configured devices and asking you to find information about these devices. Knowing these commands wouldn’t only be helping you succeed at the CCNA but would be immensely helpful once you would be working with a router whose configuration you don’t have memorized or documented.

Categories	Exam Code	100% Pass Dumps
CCNA	200-301
	200-901 DevNet
	200-201 Cyber Ops

Table of Contents

Here are some CCNA basic commands:

Show running-configuration

The ‘show run’ command is considered to be by far the most useful ‘show’ command you would ever come across. It would be ready to offer you a page by page report on how the current device would be fixing. This would include the interface information like the IP address, if the interface would be shutting down, etc. You could also observe the device-wide information like which passwords are set, if SSH or telnet would be fixing and prepared for login, etc. You could see when the configuration would be last updated as well as saved along with VLAN information.
show interfaces

This command would show you detailed information regarding the interfaces on the device. The command as ‘show int’ alone would be displaying the knowledge about each configured on the device, one after the opposite. If you would be looking for information on a specific interface, you could input the type and a number of the interface to learn only that one interface. For instance, ‘ show int fa 0/1’ would be only demonstrating to you the information regarding FastEthernet 0/1.

show IP route

‘Show IP route’ would display the routing table, which is utilized for finding where to send data. This is what you would use for observing the next hop for every packet. This is considered to be a layer-3 command. It demonstrates which interface would be able to send out a packet destined for a specific IP address. This command would also be able to tell you how the device learned of that route. You could determine if the route is directly static, connected, or learned through a routing protocol like RIP or OSPF.

show IP interface

The ‘show IP int’ command would give you the detailed layer-3 report of an interface. Such as the ‘show interfaces’ command, you would be able to specify a specific interface to look at like the ‘show IP int g 0/2’. This command would portray information like the incoming and outgoing access list, the IP address, and the network mast. The command ‘show IP interface brief’ would also be extremely resourceful for quickly seeing which interfaces are up and what IP address would be assigned to each interface. This is a concise and quick way to observe what the basic interface status looks like.

show access-list

This command would be able to display the access-lists on the device. This would be consisting of every line of the access-list but doesn’t display which interface that access-list would be applied to. To see where an access-list would be applied, you would be willing to run the ‘show run’ or ‘show IP interface’ commands. Do note down that the ‘show access-list’ command demonstrating access lists for all protocols, whereas ‘show IP access-list’ only portrays IPv4 access-lists and might excluding other existing access-lists, like the IPv6 access-lists. Remember that each access list would be unstated last command of ‘deny any’. Utilize the ‘show access-list’ command for observing exactly what an access-list would be doing.

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