N-Way replication configuration

Hi,

I have a basic question in N-Way Multi master replication configuration, For example i have 3 servers and i wanted to setup N-Way replication across those servers, in the "olcSyncRepl" configuration do i have to include the Nth server it self?

On each server:

olcSyncRepl: rid=001 provider=$URI1

olcSyncRepl: rid=002 provider=$URI2

olcSyncRepl: rid=003 provider=$URI3

VS

Server1:

olcSyncRepl: rid=002 provider=$URI2

olcSyncRepl: rid=003 provider=$URI3

Server2:

olcSyncRepl: rid=001 provider=$URI1

olcSyncRepl: rid=003 provider=$URI3

Server3:

olcSyncRepl: rid=001 provider=$URI1

olcSyncRepl: rid=002 provider=$URI2

Which one is the right way to do?

Also what is the significance of "olcServerID" do we have keep every server "olcServerID" in each server?

Thanks,

Ram