This is helpful, but unfortunately DNAC/Catalyst Center only allows command runner for up to 20 devices at a time. It would be more useful to be able to download all running-config to several text files then grep against them for the config needed.
I've done this by painstakingly downloading each running config from the configuration viewer, then once all config files were in a single folder, I run this command from a terminal prompt within the folder path:
egrep "^interface Vlan" -A 4 *.txt | grep-v 'mac' | grep -v 'helper' > ./interfaceVLAN.txt
this grep command will look for any matches starting with "interface Vlan" then grab the next four lines of text (-A 4). from any .txt file (*.txt) within the folder. I then added a few more arguments to filter out stuff I don't care about (any lines containing 'mac' or 'helper'). Finally, it saves the output of the command into a file call interfaceVLAN.txt
Next I'll open that file and command+F to find whatever I'm looking for. This works for any config you want to compile.
There is probably a way to tap into the DNAC API to pull configs in a single batch, but I haven't figured out how to do that yet.
