Display Running Configuration:
Commands for writing and displaying router running configurations or startup configuration can be executed in Privileged Exec mode. So for displaying, saving or erasing router configuration you need to be at the Privileged Exec mode. For more about Cisco router modes click here.
At Privileged mode (UpaaeRouter1 being the host name) the prompt will look like this UpaaeRouter1# .
UpaaeRouter1# show running-config // executing this command will display the running configuration.
UpaaeRouter1# show startup-config // executing this command displays the startup configuration.
Saving running configuration to startup configuration
UpaaeRouter1# copy running-config startup-config // this command will save the configuration changes you have made (running-configuration) to startup-configuration in the NVRAM.
Saving startup configuration to running configuration
UpaaeRouter1# copy startup-config running-config // this command will write the startup configuration to the running configuration.
Erasing running configuration and saving configuration
UpaaeRouter1# write erase
UpaaeRouter1# reload // these two commands will erase both running and startup configurations.
Recommended Resources for CCNA Exam:
Following resources are my personal recommendation for CCNA exam preparation, i know that i should recommend one best and most trusted resource but these are all my favorite, choosing only one among these great resources would be a biased decision according to my point of view. You can choose anyone from the following resources and i am 98% sure it will get you CCNA Routing and Switching certificate.
- CCNA Routing and Switching Complete Study Guide: Exam 100-105, Exam 200-105, Exam 200-125
- CCNA Routing and Switching 200-125 Official Cert Guide Library
- CCNA Routing and Switching Portable Command Guide (ICND1 100-105, ICND2 200-105, and CCNA 200-125)
- Cisco CCNA Simplified: Your Complete Guide to Passing the Cisco CCNA Routing and Switching Exam (Kindle Edition).