how to use option for rsync

[mohd tariq raza khan]

hello all,

i want to backup some files from serverA to serverB. but problem is that i
can ssh to serverB direcr as root with default port. i have to first ssh as
user with port 65300 and have to su - than only get root prompt of serverB .
is there any option with rsync to solve this???

serverA# ssh -l user serverB -p 65300
  then only login
user at serverB$ su -

root at serverB#
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