The Method column refers to the source of the information that was used to create the interface.
The method field has the following possible values:
RARP or SLARPReverse Address Resolution Protocol (RARP) or SLARP request
TFTPConfiguration file obtained from Trivial File Transfer Protocol (TFTP) server
manualManually changed by CLI command
NVRAMConfiguration file in nonvolatile RAM (NVRAM)
IPCPip address negotiated command
DHCPip address dhcp command
unassignedNo IP address
So, for example, NVRAM means that the interface was present in the startup-config when the router had booted and TFTP means that the interface was created as a result of doing something such as 'copy tftp running-config'.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...