Question

Commands cisco show

Answer 1

We show below the show commands that we can use within Cisco routers and switches to extract information of all kinds, necessary in the daily life of a network administrator..

Show Interfaces

Display complete statistics of all router interfaces:

 Router # show interfaces 

Show serial interface

Display the information of this serial interface:

 Router # show interface serial 0/0/0 

show ip interface brief

Display a summary of all interfaces including status and IP address

 Router # show ip interface brief 

Show controllers name_interface

Displays the hardware statistics of an interface (information on whether the cable is DTE or DCE):

 Router # show controllers name_interface 

Show clock

Display the router time:

 Router # show clock 

Show history

Display the history of used commands:

 Router # show history 

Show flash

Display information about the flash memory and the IOS files that are stored in it:

 Router # show flash 

Show version

Display the information about the router and the IOS image that is running in RAM, it also shows the value of the router configuration registry:

 Router # show version 

Show arp

Display the router's ARP table:

 Router # show arp 

Show protocols

Deploy the configured layer 3 protocols:

 Router # show protocols 

Show startup-config

Display the settings recorded in the NVRAM:

 Router # show startup-config 

Show running-config

Display the configuration that is currently running in RAM:

 Router # show running-config 

Show hosts

Display the cached list of host names and their addresses:

 Router # show hosts 

Show users

Display all users connected to the router:

 Router # show users 

Show ip route

Display the routing table of the router:

 Router # show ip route 

The routing table is the list of all the networks that the device can reach, its metric, and the way it accesses them.

Show ip route summary

Display the summary of the router's routing table:

 Router # show ip route summary 

Show ip traffic

Display the statistics of the IP traffic on the router:

 Router # show ip traffic 

Show access-list

It displays the access lists configured and the number of hits that each line has received, in this way we can make a better debug of any problem with the access lists:

 Router # show access-list 

Show cdp neighbors

Display a report of all Cisco devices to which we are connected:

 Router # show cdp neighbors 

Show cdp neightbors detail

Display a detailed report of all Cisco devices to which we are connected:

 Router # show cdp vecinos detail 

Show inventory

Display the card inventory:

 Router # show inventory 

Show processes

Displays the active processes:

 Router # show processes 

Show sessions

Display the Telnet connections established in the router:

 Router # show sessions 

Show memory

Display the router's memory statistics:

 Router # show memory 

Show tech-support

Display the complete system information:

 Router # show tech-support 

Show ip rip database

Display the routing protocol RIP information:

 Router # show ip rip database 

Show ip eigrp topology

Display the learned routes with the eigrp protocol:

 Router # show ip eigrp topology 

Show vlan

Display the list of existing vlans on the switch:

 Switch # show vlan 

Show vlan-membership

Display the list of vlans and the interfaces assigned to each vlan:

 Switch # show vlan-membership 

Show mac-address-table

Display the information in the mac address table:

 Switch # show mac-address-table 

show spanning-tree

Display the spannig-tree protocol information:

 Switch # show spanning-tree 

Show boot

Show the boot file:

 Switch # show boot 

Surely you're going to take a lot of advantage of all these Cisco show commands , if you know any more you can share it in the comments.

Do not forget that you have more guides!

Commands to configure Cisco switch and router

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