Change new server SEPM

Dear all,

I want to change new SEPM Server. I have one problem.

Example:

Old Server: name A -- IP: 1

New Server: name B -- IP:2

and now all client connect to Old Server and i want to all pc connect to New Server. How do that ?

I think:

1. Change Name & IP (new server) the same Old Server

2. Or, run sylink.xml again (1by1).

Plz help. Thanks so much