DataGuard 10G -converting standby to primary

We have 10g Dataguard setup(primary database and one physical standby database(DR) )

We are facing frequently network issue in primary site.During this time we are not able to login to primary database server itself.

At this point, what are the steps to convert to the DR(standby database) to an production?
alter database commit to switchover to primary will work? What are best practises to provide high availabity to customers using Dataguard environment. DG only used for data availabilty?.

Regards
Krishna
9585354917

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