How to copy file from tftpserver to router?

[Bridie]

I have a linux server from which I want to copy files to cisco router - c8kv via tftp,

what should I enable on the cisco router?
Or tftp client will be enabled by default?

I dont want to trigger the download from cisco router to the tftp server, instead I want to trigger it from tftp server.

[Leo Laohoo]

From the router, issue this command:  

copy tftp://<TFTP_IP_ADDRESS>/filename.ext flash:

[marce1000]

                   >...instead I want to trigger it from tftp server

  The router only has tftp-client capabilities , so this can not be done.

 M.

[Georg Pauwen]

Hello,

I used the method described below once. 

Copy a Configuration File from the TFTP Server to the Router

https://www.cisco.com/c/en/us/support/docs/ip/simple-network-management-protocol-snmp/7910-11-7910.html#copying2

[Joseph W. Doherty]

"Or tftp client will be enabled by default?"

On the router, yes, there's a tftp-client enabled by default.

Also on the router, it's possible (or used to be), to enable the router, itself, to be a tftp server (or to be a FTP server [except for very old IOS versions] or [at least once upon a time] a 'nx like file server [forget what that kind of server is called - I used to use that before Cisco routers supported the FTP server feature]).

As to "triggering" a file copy from the tftp server, one method, as noted by Georg, would be to use SNMP, from you tftp server to invoked the copy on the router.  Another possible method would be to use scripting, from your tftp server, to "logon" to the router and use a command line copy command.