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(ITS#6417) Mirrormode documentation slightly misleading

Full_Name: Peter Mogensen
Version: 2.4.20
OS: any
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (

All of the examples about mirrormode in the admin guide tells you to set
ServerID to "1" and "2".
The extended form (ServerID <N> <URL>) is only mentioned for N-way multimaster.

However, IF you also setup mirrormode for cn=config, you need to specify
ServerID on both servers as:

ServerID 1 ldap://server1/
ServerID 2 ldap://server2/

... so the config is the same on both server. Else your replica will not receive
all updates and servers will think changes they made them self are made by

A user might be able to figure this out be thinking about what mirroring
cn=config actually requires, but it would probably some time if this is
mentioned in section 18.3.4 of the admin guide.