Sebastian,
This is not possible using SNMP. SNMP cannot configure many or most of the things on devices.
Possible ways are :
1. Using tool from where you can push such configs, and they may use : SNMP, Telnet/ssh, xml etc at backend.
2. Use the following process to copy the entire config from device using SNMP and than make necessary changes and push the entire config using SNMP :
http://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/15217-copy-configs-snmp.html
-thanks
Vinod
-Thanks
Vinod
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