Hi Reza, Thank you for clearing this up.
I am not sure whether you have seen SAP Note 951910 which deals with
the configuration settings for the SLD (and other components) in a HA environment; but this should be applicable here as well.
It will also be a good idea to go through note 662119 - CCMS Monitor 'Exchange Infrastructure' displays nothing as well.
Regards,
Hemanth