Many thanks indeed, Sirdice, but I mean can csup do something like a 'server' as cvsupd do.
I set my machine as a local cvsupd and cvsup either src, ports, docs from localhost after that command, cvsup -g -L 2 -h `fastest_cvsup -Qc tw,jp,sg,kr` supfile ,as suggested in John D. Polstra's FAQ...