How to view router configuration information

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To use the router, we need to configure it by ourselves. It needs technicians to configure it. It‘s very professional, but do you know how to check the configuration of the router? Now let‘s learn how to view the configuration information of the router!
To view configuration information of Cisco router, use show command. This command can be executed in user mode and privilege mode, and more information can be seen in privilege mode than in user mode.
There are a lot of show commands
1. View the running configuration file:
　　Router#show running-config
The running config file is located in the ram of the router and stores the configuration information currently used by the router.
2. View the startup configuration file:
　　Router#show startup-config
The startup configuration file startup config is located in the NVRAM of the router and can be saved for a long time. When the router is started, it enters ram and becomes running config.
3. View the router version information:
　　Router#show version
4. Check the interface status of the router
　　Router#show ip interface brief
If the interface status is marked as "down", it means that the interface is not activated. If the interface status is marked as "up", it means that the interface has been activated.
5. View the routing table
　　Router#show ip route
Through the routing table, we can see the network that the router has identified.
6. View NAT translation:
　　Router#show ip nat translation
You should first communicate between intranet and extranet (e.g. with ping command), and then check to see the translation.