Merge config to running config

[tolinrome tolinrome]

Hello,

I have 2 nexus 9300 switches, one in production and a spare. How can I update the spare config with the running or startup config on the production 9300?

Is there a way to merge or update the part of the config with the updates from the production config?

Thanks.

[marce1000]

 - Usually complete mirroring of the configuration will not be advisable , device may need different port settings, serve links with specific purposes and or management access (addresses) must be different ,to avoid conflict.

 M.

[balaji.bandi]

Most of the nexus device are configured as vPC (not sure what is your environment)

they almost carry identical information except a small portion of config.

[Richard Burts]

Am I correct in understanding that the spare 9300 is to be used as a cold backup for the production switch (in case of failure of production switch, power it down, move connections to the spare switch, power up the spare to become the active switch for the network)? In this case you just need a simple copy of the config. I would suggest using tftp to copy the active running config to a computer in the network. But you could use a simple show running-config and copy the output into a text file. Then access the spare switch. If the spare is in an environment where you can telnet/SSH to it then you could copy tftp to startup config and you are done. If the spare is really off the network then access via console. We do not know what is currently in the configuration of the spare switch, so the first step is to eliminate any configuration that may have been done on it previously. Login and go to enable mode. Delete the existing startup config and then reboot the switch. Use config terminal and paste the copy of production running config into the running config of the spare. Then save the config of the spare switch.