What is the difference between running-config and startup-config?

Difference between a running configuration and a startup configuration. The startup configuration is the configuration your devices run on when they reboot or power up. The running configuration is the current version of the configuration file the device runs on.

Is write the same as copy running-config startup-config?

They essentially achieve the same things by saving the running configuration to the memory so that after a reload it retains the same configuration. Write memory is the “ancient” way, and copy running-config startup-config is the “newer way”.

What does copy running-config startup-config do?

On the Class A Flash file system platforms, the copy system:running-config nvram:startup-config command copies the currently running configuration to the location specified by the CONFIG_FILE environment variable. This variable specifies the device and configuration file used for initialization.

What is show startup-config?

Usage Guidelines For the Cisco 7000 family, the show startup-config command shows the configuration file specified by the CONFIG_FILE environment variable. The Cisco IOS software informs you whether the displayed configuration is a complete configuration or a distilled version.

What is Cisco running config?

The running-configuration is the config that is in the router’s memory. You change this config when you make changes to the router. Keep in mind that config is not saved until you do a copy running-configuration startup-configuration. This command can be abbreviated sh run.

What is the difference between the show run and the show start commands?

sh config will show the start-up configuration that will load everytime the device reboots. sh run config will show the configuration that is currently running on the device. This configuration will go away when you reboot the device unless you save it as the start-up config.

How do I save copy running-config startup config?

Save the Configuration Type “copy running-config startup-config” at the command line and press return on the keyboard. This will copy the current switch configuration to the non-volatile memory, which is memory that will retain its data even without power applied to it.

When should I use copy start run?

copy run start generates a new configuration file and overwrites entirely the previous configuration file. copy start run , however, acts more like a copy & paste operation: the contents of the startup configuration are processed as though they were issued via the CLI.

Why is it important to load the startup configuration into the running configuration?

A running configuration resides in a device’s RAM, so if a device loses power, all configured commands will be lost. To avoid this scenario, you need to copy your current configuration into the startup configuration.

How do I use startup config?

A startup configuration is stored in the nonvolatile memory of a device, which means that all configuration changes are saved even if the device loses power. To copy your running configuration into the startup configuration you need to type the command copy running-configuration startup-configuration.

What is the difference between running configuration and startup configuration?

Running configuration is stored on the RAM, while startup configuration is stored on the NVRAM, you can use “copy run start”, note that the running configuration reflects the configuration that the router is using while it is running now, if you copy it to startup the router will use this same configuration at reload, you don’t need to reload th…

Is it possible to copy a config from startup to running?

But if you are copying from startup to running then it is not a complete replacement but is an overlay. And you are right that if the running config has a description on an interface and the startup does not, when you copy from startup to running the description will still be there.

What is the difference between global configuration mode and running configuration?

CIsco devices store commands in two configuration files: Immediately after you type a command in the global configuration mode, it will be stored in the running configuration. A running configuration resides in a device’s RAM, so if a device loses power, all configured commands will be lost.

How to restore a configuration from the startup configuration?

Ok, if you want to restore only something from the startup configuration and not to replace the whole configuration, you can do show startup-config, and just copy the intended configuration and copy and paste them in the current configuration and here you are they will be present in the running configuration, i hope that i’ve got you right this